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ceph: factor out libceph from Ceph file system

Browse Source 
This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph.  This
is mostly a matter of moving files around.  However, a few key pieces
of the interface change as well:

 - ceph_client becomes ceph_fs_client and ceph_client, where the latter
   captures the mon and osd clients, and the fs_client gets the mds client
   and file system specific pieces.
 - Mount option parsing and debugfs setup is correspondingly broken into
   two pieces.
 - The mon client gets a generic handler callback for otherwise unknown
   messages (mds map, in this case).
 - The basic supported/required feature bits can be expanded (and are by
   ceph_fs_client).

No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Yehuda Sadeh 2010-04-06 15:14:15 -07:00 committed by Sage Weil
parent ae1533b62b
commit 3d14c5d2b6
73 changed files with 2590 additions and 1862 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MAINTAINERS
View File

@ -1527,6 +1527,8 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git
S: Supported
F: Documentation/filesystems/ceph.txt
F: fs/ceph
F: net/ceph
F: include/linux/ceph
CERTIFIED WIRELESS USB (WUSB) SUBSYSTEM:
M: David Vrabel <david.vrabel@csr.com>

14
fs/ceph/Kconfig
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@ -1,9 +1,11 @@
config CEPH_FS
tristate "Ceph distributed file system (EXPERIMENTAL)"
depends on INET && EXPERIMENTAL
select CEPH_LIB
select LIBCRC32C
select CRYPTO_AES
select CRYPTO
default n
help
Choose Y or M here to include support for mounting the
experimental Ceph distributed file system. Ceph is an extremely
@ -14,15 +16,3 @@ config CEPH_FS
If unsure, say N.
config CEPH_FS_PRETTYDEBUG
bool "Include file:line in ceph debug output"
depends on CEPH_FS
default n
help
If you say Y here, debug output will include a filename and
line to aid debugging. This icnreases kernel size and slows
execution slightly when debug call sites are enabled (e.g.,
via CONFIG_DYNAMIC_DEBUG).
If unsure, say N.

11
fs/ceph/Makefile
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@ -8,15 +8,8 @@ obj-$(CONFIG_CEPH_FS) += ceph.o
ceph-objs := super.o inode.o dir.o file.o locks.o addr.o ioctl.o \
export.o caps.o snap.o xattr.o \
messenger.o msgpool.o buffer.o pagelist.o \
mds_client.o mdsmap.o \
mon_client.o \
osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \
debugfs.o \
auth.o auth_none.o \
crypto.o armor.o \
auth_x.o \
ceph_fs.o ceph_strings.o ceph_hash.o ceph_frag.o
mds_client.o mdsmap.o strings.o ceph_frag.o \
debugfs.o
else
#Otherwise we were called directly from the command

20
fs/ceph/README
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@ -1,20 +0,0 @@
#
# The following files are shared by (and manually synchronized
# between) the Ceph userland and kernel client.
#
# userland kernel
src/include/ceph_fs.h fs/ceph/ceph_fs.h
src/include/ceph_fs.cc fs/ceph/ceph_fs.c
src/include/msgr.h fs/ceph/msgr.h
src/include/rados.h fs/ceph/rados.h
src/include/ceph_strings.cc fs/ceph/ceph_strings.c
src/include/ceph_frag.h fs/ceph/ceph_frag.h
src/include/ceph_frag.cc fs/ceph/ceph_frag.c
src/include/ceph_hash.h fs/ceph/ceph_hash.h
src/include/ceph_hash.cc fs/ceph/ceph_hash.c
src/crush/crush.c fs/ceph/crush/crush.c
src/crush/crush.h fs/ceph/crush/crush.h
src/crush/mapper.c fs/ceph/crush/mapper.c
src/crush/mapper.h fs/ceph/crush/mapper.h
src/crush/hash.h fs/ceph/crush/hash.h
src/crush/hash.c fs/ceph/crush/hash.c

65
fs/ceph/addr.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/backing-dev.h>
#include <linux/fs.h>
@ -10,7 +10,8 @@
#include <linux/task_io_accounting_ops.h>
#include "super.h"
#include "osd_client.h"
#include "mds_client.h"
#include <linux/ceph/osd_client.h>
/*
* Ceph address space ops.
@ -193,7 +194,8 @@ static int readpage_nounlock(struct file *filp, struct page *page)
{
struct inode *inode = filp->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_osd_client *osdc = &ceph_inode_to_client(inode)->osdc;
struct ceph_osd_client *osdc =
&ceph_inode_to_client(inode)->client->osdc;
int err = 0;
u64 len = PAGE_CACHE_SIZE;
@ -265,7 +267,8 @@ static int ceph_readpages(struct file *file, struct address_space *mapping,
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_osd_client *osdc = &ceph_inode_to_client(inode)->osdc;
struct ceph_osd_client *osdc =
&ceph_inode_to_client(inode)->client->osdc;
int rc = 0;
struct page **pages;
loff_t offset;
@ -365,7 +368,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
{
struct inode *inode;
struct ceph_inode_info *ci;
struct ceph_client *client;
struct ceph_fs_client *fsc;
struct ceph_osd_client *osdc;
loff_t page_off = page->index << PAGE_CACHE_SHIFT;
int len = PAGE_CACHE_SIZE;
@ -383,8 +386,8 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
}
inode = page->mapping->host;
ci = ceph_inode(inode);
client = ceph_inode_to_client(inode);
osdc = &client->osdc;
fsc = ceph_inode_to_client(inode);
osdc = &fsc->client->osdc;
/* verify this is a writeable snap context */
snapc = (void *)page->private;
@ -414,10 +417,10 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
dout("writepage %p page %p index %lu on %llu~%u snapc %p\n",
inode, page, page->index, page_off, len, snapc);
writeback_stat = atomic_long_inc_return(&client->writeback_count);
writeback_stat = atomic_long_inc_return(&fsc->writeback_count);
if (writeback_stat >
CONGESTION_ON_THRESH(client->mount_args->congestion_kb))
set_bdi_congested(&client->backing_dev_info, BLK_RW_ASYNC);
CONGESTION_ON_THRESH(fsc->mount_options->congestion_kb))
set_bdi_congested(&fsc->backing_dev_info, BLK_RW_ASYNC);
set_page_writeback(page);
err = ceph_osdc_writepages(osdc, ceph_vino(inode),
@ -496,7 +499,7 @@ static void writepages_finish(struct ceph_osd_request *req,
struct address_space *mapping = inode->i_mapping;
__s32 rc = -EIO;
u64 bytes = 0;
struct ceph_client *client = ceph_inode_to_client(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
long writeback_stat;
unsigned issued = ceph_caps_issued(ci);
@ -529,10 +532,10 @@ static void writepages_finish(struct ceph_osd_request *req,
WARN_ON(!PageUptodate(page));
writeback_stat =
atomic_long_dec_return(&client->writeback_count);
atomic_long_dec_return(&fsc->writeback_count);
if (writeback_stat <
CONGESTION_OFF_THRESH(client->mount_args->congestion_kb))
clear_bdi_congested(&client->backing_dev_info,
CONGESTION_OFF_THRESH(fsc->mount_options->congestion_kb))
clear_bdi_congested(&fsc->backing_dev_info,
BLK_RW_ASYNC);
ceph_put_snap_context((void *)page->private);
@ -569,13 +572,13 @@ static void writepages_finish(struct ceph_osd_request *req,
* mempool. we avoid the mempool if we can because req->r_num_pages
* may be less than the maximum write size.
*/
static void alloc_page_vec(struct ceph_client *client,
static void alloc_page_vec(struct ceph_fs_client *fsc,
struct ceph_osd_request *req)
{
req->r_pages = kmalloc(sizeof(struct page *) * req->r_num_pages,
GFP_NOFS);
if (!req->r_pages) {
req->r_pages = mempool_alloc(client->wb_pagevec_pool, GFP_NOFS);
req->r_pages = mempool_alloc(fsc->wb_pagevec_pool, GFP_NOFS);
req->r_pages_from_pool = 1;
WARN_ON(!req->r_pages);
}
@ -590,7 +593,7 @@ static int ceph_writepages_start(struct address_space *mapping,
struct inode *inode = mapping->host;
struct backing_dev_info *bdi = mapping->backing_dev_info;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_client *client;
struct ceph_fs_client *fsc;
pgoff_t index, start, end;
int range_whole = 0;
int should_loop = 1;
@ -617,13 +620,13 @@ static int ceph_writepages_start(struct address_space *mapping,
wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
(wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
client = ceph_inode_to_client(inode);
if (client->mount_state == CEPH_MOUNT_SHUTDOWN) {
fsc = ceph_inode_to_client(inode);
if (fsc->mount_state == CEPH_MOUNT_SHUTDOWN) {
pr_warning("writepage_start %p on forced umount\n", inode);
return -EIO; /* we're in a forced umount, don't write! */
}
if (client->mount_args->wsize && client->mount_args->wsize < wsize)
wsize = client->mount_args->wsize;
if (fsc->mount_options->wsize && fsc->mount_options->wsize < wsize)
wsize = fsc->mount_options->wsize;
if (wsize < PAGE_CACHE_SIZE)
wsize = PAGE_CACHE_SIZE;
max_pages_ever = wsize >> PAGE_CACHE_SHIFT;
@ -769,7 +772,7 @@ static int ceph_writepages_start(struct address_space *mapping,
offset = (unsigned long long)page->index
<< PAGE_CACHE_SHIFT;
len = wsize;
req = ceph_osdc_new_request(&client->osdc,
req = ceph_osdc_new_request(&fsc->client->osdc,
&ci->i_layout,
ceph_vino(inode),
offset, &len,
@ -782,7 +785,7 @@ static int ceph_writepages_start(struct address_space *mapping,
&inode->i_mtime, true, 1);
max_pages = req->r_num_pages;
alloc_page_vec(client, req);
alloc_page_vec(fsc, req);
req->r_callback = writepages_finish;
req->r_inode = inode;
}
@ -794,10 +797,10 @@ static int ceph_writepages_start(struct address_space *mapping,
inode, page, page->index);
writeback_stat =
atomic_long_inc_return(&client->writeback_count);
atomic_long_inc_return(&fsc->writeback_count);
if (writeback_stat > CONGESTION_ON_THRESH(
client->mount_args->congestion_kb)) {
set_bdi_congested(&client->backing_dev_info,
fsc->mount_options->congestion_kb)) {
set_bdi_congested(&fsc->backing_dev_info,
BLK_RW_ASYNC);
}
@ -846,7 +849,7 @@ static int ceph_writepages_start(struct address_space *mapping,
op->payload_len = cpu_to_le32(len);
req->r_request->hdr.data_len = cpu_to_le32(len);
ceph_osdc_start_request(&client->osdc, req, true);
ceph_osdc_start_request(&fsc->client->osdc, req, true);
req = NULL;
/* continue? */
@ -915,7 +918,7 @@ static int ceph_update_writeable_page(struct file *file,
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc;
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
loff_t page_off = pos & PAGE_CACHE_MASK;
int pos_in_page = pos & ~PAGE_CACHE_MASK;
int end_in_page = pos_in_page + len;
@ -1053,8 +1056,8 @@ static int ceph_write_end(struct file *file, struct address_space *mapping,
struct page *page, void *fsdata)
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_client *client = ceph_inode_to_client(inode);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_mds_client *mdsc = fsc->mdsc;
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
int check_cap = 0;
@ -1123,7 +1126,7 @@ static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct inode *inode = vma->vm_file->f_dentry->d_inode;
struct page *page = vmf->page;
struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc;
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
loff_t off = page->index << PAGE_CACHE_SHIFT;
loff_t size, len;
int ret;

35
fs/ceph/caps.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/fs.h>
#include <linux/kernel.h>
@ -9,8 +9,9 @@
#include <linux/writeback.h>
#include "super.h"
#include "decode.h"
#include "messenger.h"
#include "mds_client.h"
#include <linux/ceph/decode.h>
#include <linux/ceph/messenger.h>
/*
* Capability management
@ -287,11 +288,11 @@ void ceph_put_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap)
spin_unlock(&mdsc->caps_list_lock);
}
void ceph_reservation_status(struct ceph_client *client,
void ceph_reservation_status(struct ceph_fs_client *fsc,
int *total, int *avail, int *used, int *reserved,
int *min)
{
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_mds_client *mdsc = fsc->mdsc;
if (total)
*total = mdsc->caps_total_count;
@ -399,7 +400,7 @@ static void __insert_cap_node(struct ceph_inode_info *ci,
static void __cap_set_timeouts(struct ceph_mds_client *mdsc,
struct ceph_inode_info *ci)
{
struct ceph_mount_args *ma = mdsc->client->mount_args;
struct ceph_mount_options *ma = mdsc->fsc->mount_options;
ci->i_hold_caps_min = round_jiffies(jiffies +
ma->caps_wanted_delay_min * HZ);
@ -515,7 +516,7 @@ int ceph_add_cap(struct inode *inode,
unsigned seq, unsigned mseq, u64 realmino, int flags,
struct ceph_cap_reservation *caps_reservation)
{
struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc;
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_cap *new_cap = NULL;
struct ceph_cap *cap;
@ -873,7 +874,7 @@ void __ceph_remove_cap(struct ceph_cap *cap)
struct ceph_mds_session *session = cap->session;
struct ceph_inode_info *ci = cap->ci;
struct ceph_mds_client *mdsc =
&ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
int removed = 0;
dout("__ceph_remove_cap %p from %p\n", cap, &ci->vfs_inode);
@ -1210,7 +1211,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
int mds;
struct ceph_cap_snap *capsnap;
u32 mseq;
struct ceph_mds_client *mdsc = &ceph_inode_to_client(inode)->mdsc;
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
struct ceph_mds_session *session = NULL; /* if session != NULL, we hold
session->s_mutex */
u64 next_follows = 0; /* keep track of how far we've gotten through the
@ -1336,7 +1337,7 @@ static void ceph_flush_snaps(struct ceph_inode_info *ci)
void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask)
{
struct ceph_mds_client *mdsc =
&ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
struct inode *inode = &ci->vfs_inode;
int was = ci->i_dirty_caps;
int dirty = 0;
@ -1378,7 +1379,7 @@ void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask)
static int __mark_caps_flushing(struct inode *inode,
struct ceph_mds_session *session)
{
struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_inode_info *ci = ceph_inode(inode);
int flushing;
@ -1462,8 +1463,8 @@ static int try_nonblocking_invalidate(struct inode *inode)
void ceph_check_caps(struct ceph_inode_info *ci, int flags,
struct ceph_mds_session *session)
{
struct ceph_client *client = ceph_inode_to_client(&ci->vfs_inode);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_inode_to_client(&ci->vfs_inode);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct inode *inode = &ci->vfs_inode;
struct ceph_cap *cap;
int file_wanted, used;
@ -1706,7 +1707,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
static int try_flush_caps(struct inode *inode, struct ceph_mds_session *session,
unsigned *flush_tid)
{
struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_inode_info *ci = ceph_inode(inode);
int unlock_session = session ? 0 : 1;
int flushing = 0;
@ -1872,7 +1873,7 @@ int ceph_write_inode(struct inode *inode, struct writeback_control *wbc)
caps_are_flushed(inode, flush_tid));
} else {
struct ceph_mds_client *mdsc =
&ceph_sb_to_client(inode->i_sb)->mdsc;
ceph_sb_to_client(inode->i_sb)->mdsc;
spin_lock(&inode->i_lock);
if (__ceph_caps_dirty(ci))
@ -2465,7 +2466,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
__releases(inode->i_lock)
{
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
unsigned seq = le32_to_cpu(m->seq);
int dirty = le32_to_cpu(m->dirty);
int cleaned = 0;
@ -2713,7 +2714,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
struct ceph_msg *msg)
{
struct ceph_mds_client *mdsc = session->s_mdsc;
struct super_block *sb = mdsc->client->sb;
struct super_block *sb = mdsc->fsc->sb;
struct inode *inode;
struct ceph_cap *cap;
struct ceph_mds_caps *h;

3
fs/ceph/ceph_frag.c
View File

@ -1,7 +1,8 @@
/*
* Ceph 'frag' type
*/
#include "types.h"
#include <linux/module.h>
#include <linux/ceph/types.h>
int ceph_frag_compare(__u32 a, __u32 b)
{

429
fs/ceph/debugfs.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/device.h>
#include <linux/slab.h>
@ -7,143 +7,48 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "super.h"
#include "mds_client.h"
#include "mon_client.h"
#include "auth.h"
#include <linux/ceph/libceph.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/debugfs.h>
#ifdef CONFIG_DEBUG_FS
/*
* Implement /sys/kernel/debug/ceph fun
*
* /sys/kernel/debug/ceph/client* - an instance of the ceph client
* .../osdmap - current osdmap
* .../mdsmap - current mdsmap
* .../monmap - current monmap
* .../osdc - active osd requests
* .../mdsc - active mds requests
* .../monc - mon client state
* .../dentry_lru - dump contents of dentry lru
* .../caps - expose cap (reservation) stats
* .../bdi - symlink to ../../bdi/something
*/
static struct dentry *ceph_debugfs_dir;
static int monmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
if (client->monc.monmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
for (i = 0; i < client->monc.monmap->num_mon; i++) {
struct ceph_entity_inst *inst =
&client->monc.monmap->mon_inst[i];
seq_printf(s, "\t%s%lld\t%s\n",
ENTITY_NAME(inst->name),
pr_addr(&inst->addr.in_addr));
}
return 0;
}
#include "super.h"
#include "mds_client.h"
static int mdsmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
struct ceph_fs_client *fsc = s->private;
if (client->mdsc.mdsmap == NULL)
if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch);
seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root);
seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
seq_printf(s, "session_timeout %d\n",
client->mdsc.mdsmap->m_session_timeout);
fsc->mdsc->mdsmap->m_session_timeout);
seq_printf(s, "session_autoclose %d\n",
client->mdsc.mdsmap->m_session_autoclose);
for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) {
fsc->mdsc->mdsmap->m_session_autoclose);
for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
struct ceph_entity_addr *addr =
&client->mdsc.mdsmap->m_info[i].addr;
int state = client->mdsc.mdsmap->m_info[i].state;
&fsc->mdsc->mdsmap->m_info[i].addr;
int state = fsc->mdsc->mdsmap->m_info[i].state;
seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr),
seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
ceph_pr_addr(&addr->in_addr),
ceph_mds_state_name(state));
}
return 0;
}
static int osdmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
struct rb_node *n;
if (client->osdc.osdmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
seq_printf(s, "flags%s%s\n",
(client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
" NEARFULL" : "",
(client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
" FULL" : "");
for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
struct ceph_pg_pool_info *pool =
rb_entry(n, struct ceph_pg_pool_info, node);
seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
pool->id, pool->v.pg_num, pool->pg_num_mask,
pool->v.lpg_num, pool->lpg_num_mask);
}
for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
struct ceph_entity_addr *addr =
&client->osdc.osdmap->osd_addr[i];
int state = client->osdc.osdmap->osd_state[i];
char sb[64];
seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
i, pr_addr(&addr->in_addr),
((client->osdc.osdmap->osd_weight[i]*100) >> 16),
ceph_osdmap_state_str(sb, sizeof(sb), state));
}
return 0;
}
static int monc_show(struct seq_file *s, void *p)
{
struct ceph_client *client = s->private;
struct ceph_mon_generic_request *req;
struct ceph_mon_client *monc = &client->monc;
struct rb_node *rp;
mutex_lock(&monc->mutex);
if (monc->have_mdsmap)
seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
if (monc->have_osdmap)
seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
if (monc->want_next_osdmap)
seq_printf(s, "want next osdmap\n");
for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
__u16 op;
req = rb_entry(rp, struct ceph_mon_generic_request, node);
op = le16_to_cpu(req->request->hdr.type);
if (op == CEPH_MSG_STATFS)
seq_printf(s, "%lld statfs\n", req->tid);
else
seq_printf(s, "%lld unknown\n", req->tid);
}
mutex_unlock(&monc->mutex);
return 0;
}
/*
* mdsc debugfs
*/
static int mdsc_show(struct seq_file *s, void *p)
{
struct ceph_client *client = s->private;
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = s->private;
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
struct rb_node *rp;
int pathlen;
@ -214,61 +119,12 @@ static int mdsc_show(struct seq_file *s, void *p)
return 0;
}
static int osdc_show(struct seq_file *s, void *pp)
{
struct ceph_client *client = s->private;
struct ceph_osd_client *osdc = &client->osdc;
struct rb_node *p;
mutex_lock(&osdc->request_mutex);
for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
struct ceph_osd_request *req;
struct ceph_osd_request_head *head;
struct ceph_osd_op *op;
int num_ops;
int opcode, olen;
int i;
req = rb_entry(p, struct ceph_osd_request, r_node);
seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1,
le32_to_cpu(req->r_pgid.pool),
le16_to_cpu(req->r_pgid.ps));
head = req->r_request->front.iov_base;
op = (void *)(head + 1);
num_ops = le16_to_cpu(head->num_ops);
olen = le32_to_cpu(head->object_len);
seq_printf(s, "%.*s", olen,
(const char *)(head->ops + num_ops));
if (req->r_reassert_version.epoch)
seq_printf(s, "\t%u'%llu",
(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
le64_to_cpu(req->r_reassert_version.version));
else
seq_printf(s, "\t");
for (i = 0; i < num_ops; i++) {
opcode = le16_to_cpu(op->op);
seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
op++;
}
seq_printf(s, "\n");
}
mutex_unlock(&osdc->request_mutex);
return 0;
}
static int caps_show(struct seq_file *s, void *p)
{
struct ceph_client *client = s->private;
struct ceph_fs_client *fsc = s->private;
int total, avail, used, reserved, min;
ceph_reservation_status(client, &total, &avail, &used, &reserved, &min);
ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
seq_printf(s, "total\t\t%d\n"
"avail\t\t%d\n"
"used\t\t%d\n"
@ -280,8 +136,8 @@ static int caps_show(struct seq_file *s, void *p)
static int dentry_lru_show(struct seq_file *s, void *ptr)
{
struct ceph_client *client = s->private;
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = s->private;
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_dentry_info *di;
spin_lock(&mdsc->dentry_lru_lock);
@ -295,199 +151,124 @@ static int dentry_lru_show(struct seq_file *s, void *ptr)
return 0;
}
#define DEFINE_SHOW_FUNC(name) \
static int name##_open(struct inode *inode, struct file *file) \
{ \
struct seq_file *sf; \
int ret; \
\
ret = single_open(file, name, NULL); \
sf = file->private_data; \
sf->private = inode->i_private; \
return ret; \
} \
\
static const struct file_operations name##_fops = { \
.open = name##_open, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
};
CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
CEPH_DEFINE_SHOW_FUNC(mdsc_show)
CEPH_DEFINE_SHOW_FUNC(caps_show)
CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
DEFINE_SHOW_FUNC(monmap_show)
DEFINE_SHOW_FUNC(mdsmap_show)
DEFINE_SHOW_FUNC(osdmap_show)
DEFINE_SHOW_FUNC(monc_show)
DEFINE_SHOW_FUNC(mdsc_show)
DEFINE_SHOW_FUNC(osdc_show)
DEFINE_SHOW_FUNC(dentry_lru_show)
DEFINE_SHOW_FUNC(caps_show)
/*
* debugfs
*/
static int congestion_kb_set(void *data, u64 val)
{
struct ceph_client *client = (struct ceph_client *)data;
if (client)
client->mount_args->congestion_kb = (int)val;
struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
fsc->mount_options->congestion_kb = (int)val;
return 0;
}
static int congestion_kb_get(void *data, u64 *val)
{
struct ceph_client *client = (struct ceph_client *)data;
if (client)
*val = (u64)client->mount_args->congestion_kb;
struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
*val = (u64)fsc->mount_options->congestion_kb;
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
congestion_kb_set, "%llu\n");
int __init ceph_debugfs_init(void)
void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
{
ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
if (!ceph_debugfs_dir)
return -ENOMEM;
return 0;
dout("ceph_fs_debugfs_cleanup\n");
debugfs_remove(fsc->debugfs_bdi);
debugfs_remove(fsc->debugfs_congestion_kb);
debugfs_remove(fsc->debugfs_mdsmap);
debugfs_remove(fsc->debugfs_caps);
debugfs_remove(fsc->debugfs_mdsc);
debugfs_remove(fsc->debugfs_dentry_lru);
}
void ceph_debugfs_cleanup(void)
int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
debugfs_remove(ceph_debugfs_dir);
}
char name[100];
int err = -ENOMEM;
int ceph_debugfs_client_init(struct ceph_client *client)
{
int ret = 0;
char name[80];
snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
client->monc.auth->global_id);
client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
if (!client->debugfs_dir)
goto out;
client->monc.debugfs_file = debugfs_create_file("monc",
0600,
client->debugfs_dir,
client,
&monc_show_fops);
if (!client->monc.debugfs_file)
goto out;
client->mdsc.debugfs_file = debugfs_create_file("mdsc",
0600,
client->debugfs_dir,
client,
&mdsc_show_fops);
if (!client->mdsc.debugfs_file)
goto out;
client->osdc.debugfs_file = debugfs_create_file("osdc",
0600,
client->debugfs_dir,
client,
&osdc_show_fops);
if (!client->osdc.debugfs_file)
goto out;
client->debugfs_monmap = debugfs_create_file("monmap",
0600,
client->debugfs_dir,
client,
&monmap_show_fops);
if (!client->debugfs_monmap)
goto out;
client->debugfs_mdsmap = debugfs_create_file("mdsmap",
0600,
client->debugfs_dir,
client,
&mdsmap_show_fops);
if (!client->debugfs_mdsmap)
goto out;
client->debugfs_osdmap = debugfs_create_file("osdmap",
0600,
client->debugfs_dir,
client,
&osdmap_show_fops);
if (!client->debugfs_osdmap)
goto out;
client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
0600,
client->debugfs_dir,
client,
&dentry_lru_show_fops);
if (!client->debugfs_dentry_lru)
goto out;
client->debugfs_caps = debugfs_create_file("caps",
0400,
client->debugfs_dir,
client,
&caps_show_fops);
if (!client->debugfs_caps)
goto out;
client->debugfs_congestion_kb =
dout("ceph_fs_debugfs_init\n");
fsc->debugfs_congestion_kb =
debugfs_create_file("writeback_congestion_kb",
0600,
client->debugfs_dir,
client,
fsc->client->debugfs_dir,
fsc,
&congestion_kb_fops);
if (!client->debugfs_congestion_kb)
if (!fsc->debugfs_congestion_kb)
goto out;
sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
name);
dout("a\n");
snprintf(name, sizeof(name), "../../bdi/%s",
dev_name(fsc->backing_dev_info.dev));
fsc->debugfs_bdi =
debugfs_create_symlink("bdi",
fsc->client->debugfs_dir,
name);
if (!fsc->debugfs_bdi)
goto out;
dout("b\n");
fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
0600,
fsc->client->debugfs_dir,
fsc,
&mdsmap_show_fops);
if (!fsc->debugfs_mdsmap)
goto out;
dout("ca\n");
fsc->debugfs_mdsc = debugfs_create_file("mdsc",
0600,
fsc->client->debugfs_dir,
fsc,
&mdsc_show_fops);
if (!fsc->debugfs_mdsc)
goto out;
dout("da\n");
fsc->debugfs_caps = debugfs_create_file("caps",
0400,
fsc->client->debugfs_dir,
fsc,
&caps_show_fops);
if (!fsc->debugfs_caps)
goto out;
dout("ea\n");
fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
0600,
fsc->client->debugfs_dir,
fsc,
&dentry_lru_show_fops);
if (!fsc->debugfs_dentry_lru)
goto out;
return 0;
out:
ceph_debugfs_client_cleanup(client);
return ret;
ceph_fs_debugfs_cleanup(fsc);
return err;
}
void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
debugfs_remove(client->debugfs_bdi);
debugfs_remove(client->debugfs_caps);
debugfs_remove(client->debugfs_dentry_lru);
debugfs_remove(client->debugfs_osdmap);
debugfs_remove(client->debugfs_mdsmap);
debugfs_remove(client->debugfs_monmap);
debugfs_remove(client->osdc.debugfs_file);
debugfs_remove(client->mdsc.debugfs_file);
debugfs_remove(client->monc.debugfs_file);
debugfs_remove(client->debugfs_congestion_kb);
debugfs_remove(client->debugfs_dir);
}
#else /* CONFIG_DEBUG_FS */
int __init ceph_debugfs_init(void)
int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
return 0;
}
void ceph_debugfs_cleanup(void)
{
}
int ceph_debugfs_client_init(struct ceph_client *client)
{
return 0;
}
void ceph_debugfs_client_cleanup(struct ceph_client *client)
void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
{
}

55
fs/ceph/dir.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/spinlock.h>
#include <linux/fs_struct.h>
@ -7,6 +7,7 @@
#include <linux/sched.h>
#include "super.h"
#include "mds_client.h"
/*
* Directory operations: readdir, lookup, create, link, unlink,
@ -227,15 +228,15 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct ceph_file_info *fi = filp->private_data;
struct inode *inode = filp->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_client *client = ceph_inode_to_client(inode);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_mds_client *mdsc = fsc->mdsc;
unsigned frag = fpos_frag(filp->f_pos);
int off = fpos_off(filp->f_pos);
int err;
u32 ftype;
struct ceph_mds_reply_info_parsed *rinfo;
const int max_entries = client->mount_args->max_readdir;
const int max_bytes = client->mount_args->max_readdir_bytes;
const int max_entries = fsc->mount_options->max_readdir;
const int max_bytes = fsc->mount_options->max_readdir_bytes;
dout("readdir %p filp %p frag %u off %u\n", inode, filp, frag, off);
if (fi->at_end)
@ -267,7 +268,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
/* can we use the dcache? */
spin_lock(&inode->i_lock);
if ((filp->f_pos == 2 || fi->dentry) &&
!ceph_test_opt(client, NOASYNCREADDIR) &&
!ceph_test_mount_opt(fsc, NOASYNCREADDIR) &&
ceph_snap(inode) != CEPH_SNAPDIR &&
(ci->i_ceph_flags & CEPH_I_COMPLETE) &&
__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) {
@ -487,14 +488,14 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin)
struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
struct dentry *dentry, int err)
{
struct ceph_client *client = ceph_sb_to_client(dentry->d_sb);
struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
struct inode *parent = dentry->d_parent->d_inode;
/* .snap dir? */
if (err == -ENOENT &&
ceph_vino(parent).ino != CEPH_INO_ROOT && /* no .snap in root dir */
strcmp(dentry->d_name.name,
client->mount_args->snapdir_name) == 0) {
fsc->mount_options->snapdir_name) == 0) {
struct inode *inode = ceph_get_snapdir(parent);
dout("ENOENT on snapdir %p '%.*s', linking to snapdir %p\n",
dentry, dentry->d_name.len, dentry->d_name.name, inode);
@ -539,8 +540,8 @@ static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)
static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int op;
int err;
@ -572,7 +573,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
spin_lock(&dir->i_lock);
dout(" dir %p flags are %d\n", dir, ci->i_ceph_flags);
if (strncmp(dentry->d_name.name,
client->mount_args->snapdir_name,
fsc->mount_options->snapdir_name,
dentry->d_name.len) &&
!is_root_ceph_dentry(dir, dentry) &&
(ci->i_ceph_flags & CEPH_I_COMPLETE) &&
@ -629,8 +630,8 @@ int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)
static int ceph_mknod(struct inode *dir, struct dentry *dentry,
int mode, dev_t rdev)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int err;
@ -685,8 +686,8 @@ static int ceph_create(struct inode *dir, struct dentry *dentry, int mode,
static int ceph_symlink(struct inode *dir, struct dentry *dentry,
const char *dest)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int err;
@ -716,8 +717,8 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
static int ceph_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int err = -EROFS;
int op;
@ -758,8 +759,8 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, int mode)
static int ceph_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *dentry)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int err;
@ -813,8 +814,8 @@ static int drop_caps_for_unlink(struct inode *inode)
*/
static int ceph_unlink(struct inode *dir, struct dentry *dentry)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct inode *inode = dentry->d_inode;
struct ceph_mds_request *req;
int err = -EROFS;
@ -854,8 +855,8 @@ static int ceph_unlink(struct inode *dir, struct dentry *dentry)
static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
struct ceph_client *client = ceph_sb_to_client(old_dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(old_dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int err;
@ -1076,7 +1077,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
struct ceph_inode_info *ci = ceph_inode(inode);
int left;
if (!ceph_test_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT))
if (!ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT))
return -EISDIR;
if (!cf->dir_info) {
@ -1177,7 +1178,7 @@ void ceph_dentry_lru_add(struct dentry *dn)
dout("dentry_lru_add %p %p '%.*s'\n", di, dn,
dn->d_name.len, dn->d_name.name);
if (di) {
mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
mdsc = ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);
list_add_tail(&di->lru, &mdsc->dentry_lru);
mdsc->num_dentry++;
@ -1193,7 +1194,7 @@ void ceph_dentry_lru_touch(struct dentry *dn)
dout("dentry_lru_touch %p %p '%.*s' (offset %lld)\n", di, dn,
dn->d_name.len, dn->d_name.name, di->offset);
if (di) {
mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
mdsc = ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);
list_move_tail(&di->lru, &mdsc->dentry_lru);
spin_unlock(&mdsc->dentry_lru_lock);
@ -1208,7 +1209,7 @@ void ceph_dentry_lru_del(struct dentry *dn)
dout("dentry_lru_del %p %p '%.*s'\n", di, dn,
dn->d_name.len, dn->d_name.name);
if (di) {
mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
mdsc = ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);
list_del_init(&di->lru);
mdsc->num_dentry--;

5
fs/ceph/export.c
View File

@ -1,10 +1,11 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/exportfs.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
#include "super.h"
#include "mds_client.h"
/*
* NFS export support
@ -120,7 +121,7 @@ static struct dentry *__fh_to_dentry(struct super_block *sb,
static struct dentry *__cfh_to_dentry(struct super_block *sb,
struct ceph_nfs_confh *cfh)
{
struct ceph_mds_client *mdsc = &ceph_sb_to_client(sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(sb)->mdsc;
struct inode *inode;
struct dentry *dentry;
struct ceph_vino vino;

207
fs/ceph/file.c
View File

@ -1,5 +1,6 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/file.h>
@ -38,8 +39,8 @@
static struct ceph_mds_request *
prepare_open_request(struct super_block *sb, int flags, int create_mode)
{
struct ceph_client *client = ceph_sb_to_client(sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int want_auth = USE_ANY_MDS;
int op = (flags & O_CREAT) ? CEPH_MDS_OP_CREATE : CEPH_MDS_OP_OPEN;
@ -117,8 +118,8 @@ static int ceph_init_file(struct inode *inode, struct file *file, int fmode)
int ceph_open(struct inode *inode, struct file *file)
{
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_client *client = ceph_sb_to_client(inode->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
struct ceph_file_info *cf = file->private_data;
struct inode *parent_inode = file->f_dentry->d_parent->d_inode;
@ -216,8 +217,8 @@ struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
struct nameidata *nd, int mode,
int locked_dir)
{
struct ceph_client *client = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct file *file = nd->intent.open.file;
struct inode *parent_inode = get_dentry_parent_inode(file->f_dentry);
struct ceph_mds_request *req;
@ -269,163 +270,6 @@ int ceph_release(struct inode *inode, struct file *file)
return 0;
}
/*
* build a vector of user pages
*/
static struct page **get_direct_page_vector(const char __user *data,
int num_pages,
loff_t off, size_t len)
{
struct page **pages;
int rc;
pages = kmalloc(sizeof(*pages) * num_pages, GFP_NOFS);
if (!pages)
return ERR_PTR(-ENOMEM);
down_read(&current->mm->mmap_sem);
rc = get_user_pages(current, current->mm, (unsigned long)data,
num_pages, 0, 0, pages, NULL);
up_read(&current->mm->mmap_sem);
if (rc < 0)
goto fail;
return pages;
fail:
kfree(pages);
return ERR_PTR(rc);
}
static void put_page_vector(struct page **pages, int num_pages)
{
int i;
for (i = 0; i < num_pages; i++)
put_page(pages[i]);
kfree(pages);
}
void ceph_release_page_vector(struct page **pages, int num_pages)
{
int i;
for (i = 0; i < num_pages; i++)
__free_pages(pages[i], 0);
kfree(pages);
}
/*
* allocate a vector new pages
*/
static struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags)
{
struct page **pages;
int i;
pages = kmalloc(sizeof(*pages) * num_pages, flags);
if (!pages)
return ERR_PTR(-ENOMEM);
for (i = 0; i < num_pages; i++) {
pages[i] = __page_cache_alloc(flags);
if (pages[i] == NULL) {
ceph_release_page_vector(pages, i);
return ERR_PTR(-ENOMEM);
}
}
return pages;
}
/*
* copy user data into a page vector
*/
static int copy_user_to_page_vector(struct page **pages,
const char __user *data,
loff_t off, size_t len)
{
int i = 0;
int po = off & ~PAGE_CACHE_MASK;
int left = len;
int l, bad;
while (left > 0) {
l = min_t(int, PAGE_CACHE_SIZE-po, left);
bad = copy_from_user(page_address(pages[i]) + po, data, l);
if (bad == l)
return -EFAULT;
data += l - bad;
left -= l - bad;
po += l - bad;
if (po == PAGE_CACHE_SIZE) {
po = 0;
i++;
}
}
return len;
}
/*
* copy user data from a page vector into a user pointer
*/
static int copy_page_vector_to_user(struct page **pages, char __user *data,
loff_t off, size_t len)
{
int i = 0;
int po = off & ~PAGE_CACHE_MASK;
int left = len;
int l, bad;
while (left > 0) {
l = min_t(int, left, PAGE_CACHE_SIZE-po);
bad = copy_to_user(data, page_address(pages[i]) + po, l);
if (bad == l)
return -EFAULT;
data += l - bad;
left -= l - bad;
if (po) {
po += l - bad;
if (po == PAGE_CACHE_SIZE)
po = 0;
}
i++;
}
return len;
}
/*
* Zero an extent within a page vector. Offset is relative to the
* start of the first page.
*/
static void zero_page_vector_range(int off, int len, struct page **pages)
{
int i = off >> PAGE_CACHE_SHIFT;
off &= ~PAGE_CACHE_MASK;
dout("zero_page_vector_page %u~%u\n", off, len);
/* leading partial page? */
if (off) {
int end = min((int)PAGE_CACHE_SIZE, off + len);
dout("zeroing %d %p head from %d\n", i, pages[i],
(int)off);
zero_user_segment(pages[i], off, end);
len -= (end - off);
i++;
}
while (len >= PAGE_CACHE_SIZE) {
dout("zeroing %d %p len=%d\n", i, pages[i], len);
zero_user_segment(pages[i], 0, PAGE_CACHE_SIZE);
len -= PAGE_CACHE_SIZE;
i++;
}
/* trailing partial page? */
if (len) {
dout("zeroing %d %p tail to %d\n", i, pages[i], (int)len);
zero_user_segment(pages[i], 0, len);
}
}
/*
* Read a range of bytes striped over one or more objects. Iterate over
* objects we stripe over. (That's not atomic, but good enough for now.)
@ -438,7 +282,7 @@ static int striped_read(struct inode *inode,
struct page **pages, int num_pages,
int *checkeof)
{
struct ceph_client *client = ceph_inode_to_client(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_inode_info *ci = ceph_inode(inode);
u64 pos, this_len;
int page_off = off & ~PAGE_CACHE_MASK; /* first byte's offset in page */
@ -459,7 +303,7 @@ static int striped_read(struct inode *inode,
more:
this_len = left;
ret = ceph_osdc_readpages(&client->osdc, ceph_vino(inode),
ret = ceph_osdc_readpages(&fsc->client->osdc, ceph_vino(inode),
&ci->i_layout, pos, &this_len,
ci->i_truncate_seq,
ci->i_truncate_size,
@ -477,8 +321,8 @@ static int striped_read(struct inode *inode,
if (read < pos - off) {
dout(" zero gap %llu to %llu\n", off + read, pos);
zero_page_vector_range(page_off + read,
pos - off - read, pages);
ceph_zero_page_vector_range(page_off + read,
pos - off - read, pages);
}
pos += ret;
read = pos - off;
@ -495,8 +339,8 @@ static int striped_read(struct inode *inode,
/* was original extent fully inside i_size? */
if (pos + left <= inode->i_size) {
dout("zero tail\n");
zero_page_vector_range(page_off + read, len - read,
pages);
ceph_zero_page_vector_range(page_off + read, len - read,
pages);
read = len;
goto out;
}
@ -531,7 +375,7 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data,
(file->f_flags & O_DIRECT) ? "O_DIRECT" : "");
if (file->f_flags & O_DIRECT) {
pages = get_direct_page_vector(data, num_pages, off, len);
pages = ceph_get_direct_page_vector(data, num_pages, off, len);
/*
* flush any page cache pages in this range. this
@ -552,13 +396,13 @@ static ssize_t ceph_sync_read(struct file *file, char __user *data,
ret = striped_read(inode, off, len, pages, num_pages, checkeof);
if (ret >= 0 && (file->f_flags & O_DIRECT) == 0)
ret = copy_page_vector_to_user(pages, data, off, ret);
ret = ceph_copy_page_vector_to_user(pages, data, off, ret);
if (ret >= 0)
*poff = off + ret;
done:
if (file->f_flags & O_DIRECT)
put_page_vector(pages, num_pages);
ceph_put_page_vector(pages, num_pages);
else
ceph_release_page_vector(pages, num_pages);
dout("sync_read result %d\n", ret);
@ -594,7 +438,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_client *client = ceph_inode_to_client(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_osd_request *req;
struct page **pages;
int num_pages;
@ -642,7 +486,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
*/
more:
len = left;
req = ceph_osdc_new_request(&client->osdc, &ci->i_layout,
req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout,
ceph_vino(inode), pos, &len,
CEPH_OSD_OP_WRITE, flags,
ci->i_snap_realm->cached_context,
@ -655,7 +499,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
num_pages = calc_pages_for(pos, len);
if (file->f_flags & O_DIRECT) {
pages = get_direct_page_vector(data, num_pages, pos, len);
pages = ceph_get_direct_page_vector(data, num_pages, pos, len);
if (IS_ERR(pages)) {
ret = PTR_ERR(pages);
goto out;
@ -673,7 +517,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
ret = PTR_ERR(pages);
goto out;
}
ret = copy_user_to_page_vector(pages, data, pos, len);
ret = ceph_copy_user_to_page_vector(pages, data, pos, len);
if (ret < 0) {
ceph_release_page_vector(pages, num_pages);
goto out;
@ -689,7 +533,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
req->r_num_pages = num_pages;
req->r_inode = inode;
ret = ceph_osdc_start_request(&client->osdc, req, false);
ret = ceph_osdc_start_request(&fsc->client->osdc, req, false);
if (!ret) {
if (req->r_safe_callback) {
/*
@ -701,11 +545,11 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
spin_unlock(&ci->i_unsafe_lock);
ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
}
ret = ceph_osdc_wait_request(&client->osdc, req);
ret = ceph_osdc_wait_request(&fsc->client->osdc, req);
}
if (file->f_flags & O_DIRECT)
put_page_vector(pages, num_pages);
ceph_put_page_vector(pages, num_pages);
else if (file->f_flags & O_SYNC)
ceph_release_page_vector(pages, num_pages);
@ -814,7 +658,8 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
struct ceph_file_info *fi = file->private_data;
struct inode *inode = file->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->osdc;
struct ceph_osd_client *osdc =
&ceph_sb_to_client(inode->i_sb)->client->osdc;
loff_t endoff = pos + iov->iov_len;
int want, got = 0;
int ret, err;

19
fs/ceph/inode.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -13,7 +13,8 @@
#include <linux/pagevec.h>
#include "super.h"
#include "decode.h"
#include "mds_client.h"
#include <linux/ceph/decode.h>
/*
* Ceph inode operations
@ -384,7 +385,7 @@ void ceph_destroy_inode(struct inode *inode)
*/
if (ci->i_snap_realm) {
struct ceph_mds_client *mdsc =
&ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
struct ceph_snap_realm *realm = ci->i_snap_realm;
dout(" dropping residual ref to snap realm %p\n", realm);
@ -685,7 +686,7 @@ static int fill_inode(struct inode *inode,
}
/* it may be better to set st_size in getattr instead? */
if (ceph_test_opt(ceph_sb_to_client(inode->i_sb), RBYTES))
if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), RBYTES))
inode->i_size = ci->i_rbytes;
break;
default:
@ -901,7 +902,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
struct inode *in = NULL;
struct ceph_mds_reply_inode *ininfo;
struct ceph_vino vino;
struct ceph_client *client = ceph_sb_to_client(sb);
struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
int i = 0;
int err = 0;
@ -965,7 +966,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
*/
if (rinfo->head->is_dentry && !req->r_aborted &&
(rinfo->head->is_target || strncmp(req->r_dentry->d_name.name,
client->mount_args->snapdir_name,
fsc->mount_options->snapdir_name,
req->r_dentry->d_name.len))) {
/*
* lookup link rename : null -> possibly existing inode
@ -1533,7 +1534,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
struct inode *parent_inode = dentry->d_parent->d_inode;
const unsigned int ia_valid = attr->ia_valid;
struct ceph_mds_request *req;
struct ceph_mds_client *mdsc = &ceph_sb_to_client(dentry->d_sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc;
int issued;
int release = 0, dirtied = 0;
int mask = 0;
@ -1728,8 +1729,8 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
*/
int ceph_do_getattr(struct inode *inode, int mask)
{
struct ceph_client *client = ceph_sb_to_client(inode->i_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int err;

11
fs/ceph/ioctl.c
View File

@ -1,8 +1,10 @@
#include <linux/in.h>
#include "ioctl.h"
#include "super.h"
#include "ceph_debug.h"
#include "mds_client.h"
#include <linux/ceph/ceph_debug.h>
#include "ioctl.h"
/*
@ -37,7 +39,7 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
{
struct inode *inode = file->f_dentry->d_inode;
struct inode *parent_inode = file->f_dentry->d_parent->d_inode;
struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_request *req;
struct ceph_ioctl_layout l;
int err, i;
@ -98,7 +100,8 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
struct ceph_ioctl_dataloc dl;
struct inode *inode = file->f_dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->osdc;
struct ceph_osd_client *osdc =
&ceph_sb_to_client(inode->i_sb)->client->osdc;
u64 len = 1, olen;
u64 tmp;
struct ceph_object_layout ol;

6
fs/ceph/locks.c
View File

@ -1,11 +1,11 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/file.h>
#include <linux/namei.h>
#include "super.h"
#include "mds_client.h"
#include "pagelist.h"
#include <linux/ceph/pagelist.h>
/**
* Implement fcntl and flock locking functions.
@ -16,7 +16,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file,
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_mds_client *mdsc =
&ceph_sb_to_client(inode->i_sb)->mdsc;
ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_request *req;
int err;

86
fs/ceph/mds_client.c
View File

@ -1,17 +1,20 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/wait.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "mds_client.h"
#include "mon_client.h"
#include "super.h"
#include "messenger.h"
#include "decode.h"
#include "auth.h"
#include "pagelist.h"
#include "mds_client.h"
#include <linux/ceph/messenger.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/pagelist.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/debugfs.h>
/*
* A cluster of MDS (metadata server) daemons is responsible for
@ -286,8 +289,9 @@ void ceph_put_mds_session(struct ceph_mds_session *s)
atomic_read(&s->s_ref), atomic_read(&s->s_ref)-1);
if (atomic_dec_and_test(&s->s_ref)) {
if (s->s_authorizer)
s->s_mdsc->client->monc.auth->ops->destroy_authorizer(
s->s_mdsc->client->monc.auth, s->s_authorizer);
s->s_mdsc->fsc->client->monc.auth->ops->destroy_authorizer(
s->s_mdsc->fsc->client->monc.auth,
s->s_authorizer);
kfree(s);
}
}
@ -344,7 +348,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
s->s_seq = 0;
mutex_init(&s->s_mutex);
ceph_con_init(mdsc->client->msgr, &s->s_con);
ceph_con_init(mdsc->fsc->client->msgr, &s->s_con);
s->s_con.private = s;
s->s_con.ops = &mds_con_ops;
s->s_con.peer_name.type = CEPH_ENTITY_TYPE_MDS;
@ -599,7 +603,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
} else if (req->r_dentry) {
struct inode *dir = req->r_dentry->d_parent->d_inode;
if (dir->i_sb != mdsc->client->sb) {
if (dir->i_sb != mdsc->fsc->sb) {
/* not this fs! */
inode = req->r_dentry->d_inode;
} else if (ceph_snap(dir) != CEPH_NOSNAP) {
@ -884,7 +888,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
__ceph_remove_cap(cap);
if (!__ceph_is_any_real_caps(ci)) {
struct ceph_mds_client *mdsc =
&ceph_sb_to_client(inode->i_sb)->mdsc;
ceph_sb_to_client(inode->i_sb)->mdsc;
spin_lock(&mdsc->cap_dirty_lock);
if (!list_empty(&ci->i_dirty_item)) {
@ -1146,7 +1150,7 @@ int ceph_add_cap_releases(struct ceph_mds_client *mdsc,
struct ceph_msg *msg, *partial = NULL;
struct ceph_mds_cap_release *head;
int err = -ENOMEM;
int extra = mdsc->client->mount_args->cap_release_safety;
int extra = mdsc->fsc->mount_options->cap_release_safety;
int num;
dout("add_cap_releases %p mds%d extra %d\n", session, session->s_mds,
@ -2085,7 +2089,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
/* insert trace into our cache */
mutex_lock(&req->r_fill_mutex);
err = ceph_fill_trace(mdsc->client->sb, req, req->r_session);
err = ceph_fill_trace(mdsc->fsc->sb, req, req->r_session);
if (err == 0) {
if (result == 0 && rinfo->dir_nr)
ceph_readdir_prepopulate(req, req->r_session);
@ -2613,7 +2617,7 @@ static void handle_lease(struct ceph_mds_client *mdsc,
struct ceph_mds_session *session,
struct ceph_msg *msg)
{
struct super_block *sb = mdsc->client->sb;
struct super_block *sb = mdsc->fsc->sb;
struct inode *inode;
struct ceph_inode_info *ci;
struct dentry *parent, *dentry;
@ -2891,10 +2895,16 @@ static void delayed_work(struct work_struct *work)
schedule_delayed(mdsc);
}
int ceph_mdsc_init(struct ceph_fs_client *fsc)
int ceph_mdsc_init(struct ceph_mds_client *mdsc, struct ceph_client *client)
{
mdsc->client = client;
struct ceph_mds_client *mdsc;
mdsc = kzalloc(sizeof(struct ceph_mds_client), GFP_NOFS);
if (!mdsc)
return -ENOMEM;
mdsc->fsc = fsc;
fsc->mdsc = mdsc;
mutex_init(&mdsc->mutex);
mdsc->mdsmap = kzalloc(sizeof(*mdsc->mdsmap), GFP_NOFS);
if (mdsc->mdsmap == NULL)
@ -2927,7 +2937,7 @@ int ceph_mdsc_init(struct ceph_mds_client *mdsc, struct ceph_client *client)
INIT_LIST_HEAD(&mdsc->dentry_lru);
ceph_caps_init(mdsc);
ceph_adjust_min_caps(mdsc, client->min_caps);
ceph_adjust_min_caps(mdsc, fsc->min_caps);
return 0;
}
@ -2939,7 +2949,7 @@ int ceph_mdsc_init(struct ceph_mds_client *mdsc, struct ceph_client *client)
static void wait_requests(struct ceph_mds_client *mdsc)
{
struct ceph_mds_request *req;
struct ceph_client *client = mdsc->client;
struct ceph_fs_client *fsc = mdsc->fsc;
mutex_lock(&mdsc->mutex);
if (__get_oldest_req(mdsc)) {
@ -2947,7 +2957,7 @@ static void wait_requests(struct ceph_mds_client *mdsc)
dout("wait_requests waiting for requests\n");
wait_for_completion_timeout(&mdsc->safe_umount_waiters,
client->mount_args->mount_timeout * HZ);
fsc->client->options->mount_timeout * HZ);
/* tear down remaining requests */
mutex_lock(&mdsc->mutex);
@ -3030,7 +3040,7 @@ void ceph_mdsc_sync(struct ceph_mds_client *mdsc)
{
u64 want_tid, want_flush;
if (mdsc->client->mount_state == CEPH_MOUNT_SHUTDOWN)
if (mdsc->fsc->mount_state == CEPH_MOUNT_SHUTDOWN)
return;
dout("sync\n");
@ -3053,7 +3063,7 @@ bool done_closing_sessions(struct ceph_mds_client *mdsc)
{
int i, n = 0;
if (mdsc->client->mount_state == CEPH_MOUNT_SHUTDOWN)
if (mdsc->fsc->mount_state == CEPH_MOUNT_SHUTDOWN)
return true;
mutex_lock(&mdsc->mutex);
@ -3071,8 +3081,8 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc)
{
struct ceph_mds_session *session;
int i;
struct ceph_client *client = mdsc->client;
unsigned long timeout = client->mount_args->mount_timeout * HZ;
struct ceph_fs_client *fsc = mdsc->fsc;
unsigned long timeout = fsc->client->options->mount_timeout * HZ;
dout("close_sessions\n");
@ -3119,7 +3129,7 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc)
dout("stopped\n");
}
void ceph_mdsc_stop(struct ceph_mds_client *mdsc)
static void ceph_mdsc_stop(struct ceph_mds_client *mdsc)
{
dout("stop\n");
cancel_delayed_work_sync(&mdsc->delayed_work); /* cancel timer */
@ -3129,6 +3139,15 @@ void ceph_mdsc_stop(struct ceph_mds_client *mdsc)
ceph_caps_finalize(mdsc);
}
void ceph_mdsc_destroy(struct ceph_fs_client *fsc)
{
struct ceph_mds_client *mdsc = fsc->mdsc;
ceph_mdsc_stop(mdsc);
fsc->mdsc = NULL;
kfree(mdsc);
}
/*
* handle mds map update.
@ -3145,14 +3164,14 @@ void ceph_mdsc_handle_map(struct ceph_mds_client *mdsc, struct ceph_msg *msg)
ceph_decode_need(&p, end, sizeof(fsid)+2*sizeof(u32), bad);
ceph_decode_copy(&p, &fsid, sizeof(fsid));
if (ceph_check_fsid(mdsc->client, &fsid) < 0)
if (ceph_check_fsid(mdsc->fsc->client, &fsid) < 0)
return;
epoch = ceph_decode_32(&p);
maplen = ceph_decode_32(&p);
dout("handle_map epoch %u len %d\n", epoch, (int)maplen);
/* do we need it? */
ceph_monc_got_mdsmap(&mdsc->client->monc, epoch);
ceph_monc_got_mdsmap(&mdsc->fsc->client->monc, epoch);
mutex_lock(&mdsc->mutex);
if (mdsc->mdsmap && epoch <= mdsc->mdsmap->m_epoch) {
dout("handle_map epoch %u <= our %u\n",
@ -3176,7 +3195,7 @@ void ceph_mdsc_handle_map(struct ceph_mds_client *mdsc, struct ceph_msg *msg)
} else {
mdsc->mdsmap = newmap; /* first mds map */
}
mdsc->client->sb->s_maxbytes = mdsc->mdsmap->m_max_file_size;
mdsc->fsc->sb->s_maxbytes = mdsc->mdsmap->m_max_file_size;
__wake_requests(mdsc, &mdsc->waiting_for_map);
@ -3277,7 +3296,7 @@ static int get_authorizer(struct ceph_connection *con,
{
struct ceph_mds_session *s = con->private;
struct ceph_mds_client *mdsc = s->s_mdsc;
struct ceph_auth_client *ac = mdsc->client->monc.auth;
struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
int ret = 0;
if (force_new && s->s_authorizer) {
@ -3311,7 +3330,7 @@ static int verify_authorizer_reply(struct ceph_connection *con, int len)
{
struct ceph_mds_session *s = con->private;
struct ceph_mds_client *mdsc = s->s_mdsc;
struct ceph_auth_client *ac = mdsc->client->monc.auth;
struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
return ac->ops->verify_authorizer_reply(ac, s->s_authorizer, len);
}
@ -3320,12 +3339,12 @@ static int invalidate_authorizer(struct ceph_connection *con)
{
struct ceph_mds_session *s = con->private;
struct ceph_mds_client *mdsc = s->s_mdsc;
struct ceph_auth_client *ac = mdsc->client->monc.auth;
struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
if (ac->ops->invalidate_authorizer)
ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_MDS);
return ceph_monc_validate_auth(&mdsc->client->monc);
return ceph_monc_validate_auth(&mdsc->fsc->client->monc);
}
static const struct ceph_connection_operations mds_con_ops = {
@ -3338,7 +3357,4 @@ static const struct ceph_connection_operations mds_con_ops = {
.peer_reset = peer_reset,
};
/* eof */

20
fs/ceph/mds_client.h
View File

@ -8,9 +8,9 @@
#include <linux/rbtree.h>
#include <linux/spinlock.h>
#include "types.h"
#include "messenger.h"
#include "mdsmap.h"
#include <linux/ceph/types.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/mdsmap.h>
/*
* Some lock dependencies:
@ -26,7 +26,7 @@
*
*/
struct ceph_client;
struct ceph_fs_client;
struct ceph_cap;
/*
@ -230,7 +230,7 @@ struct ceph_mds_request {
* mds client state
*/
struct ceph_mds_client {
struct ceph_client *client;
struct ceph_fs_client *fsc;
struct mutex mutex; /* all nested structures */
struct ceph_mdsmap *mdsmap;
@ -289,11 +289,6 @@ struct ceph_mds_client {
int caps_avail_count; /* unused, unreserved */
int caps_min_count; /* keep at least this many
(unreserved) */
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_file;
#endif
spinlock_t dentry_lru_lock;
struct list_head dentry_lru;
int num_dentry;
@ -316,10 +311,9 @@ extern void ceph_put_mds_session(struct ceph_mds_session *s);
extern int ceph_send_msg_mds(struct ceph_mds_client *mdsc,
struct ceph_msg *msg, int mds);
extern int ceph_mdsc_init(struct ceph_mds_client *mdsc,
struct ceph_client *client);
extern int ceph_mdsc_init(struct ceph_fs_client *fsc);
extern void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc);
extern void ceph_mdsc_stop(struct ceph_mds_client *mdsc);
extern void ceph_mdsc_destroy(struct ceph_fs_client *fsc);
extern void ceph_mdsc_sync(struct ceph_mds_client *mdsc);

11
fs/ceph/mdsmap.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/bug.h>
#include <linux/err.h>
@ -6,9 +6,9 @@
#include <linux/slab.h>
#include <linux/types.h>
#include "mdsmap.h"
#include "messenger.h"
#include "decode.h"
#include <linux/ceph/mdsmap.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/decode.h>
#include "super.h"
@ -117,7 +117,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
}
dout("mdsmap_decode %d/%d %lld mds%d.%d %s %s\n",
i+1, n, global_id, mds, inc, pr_addr(&addr.in_addr),
i+1, n, global_id, mds, inc,
ceph_pr_addr(&addr.in_addr),
ceph_mds_state_name(state));
if (mds >= 0 && mds < m->m_max_mds && state > 0) {
m->m_info[mds].global_id = global_id;

10
fs/ceph/snap.c
View File

@ -1,10 +1,12 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/sort.h>
#include <linux/slab.h>
#include "super.h"
#include "decode.h"
#include "mds_client.h"
#include <linux/ceph/decode.h>
/*
* Snapshots in ceph are driven in large part by cooperation from the
@ -526,7 +528,7 @@ int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
struct ceph_cap_snap *capsnap)
{
struct inode *inode = &ci->vfs_inode;
struct ceph_mds_client *mdsc = &ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
BUG_ON(capsnap->writing);
capsnap->size = inode->i_size;
@ -747,7 +749,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
struct ceph_mds_session *session,
struct ceph_msg *msg)
{
struct super_block *sb = mdsc->client->sb;
struct super_block *sb = mdsc->fsc->sb;
int mds = session->s_mds;
u64 split;
int op;

82
fs/ceph/ceph_strings.c → fs/ceph/strings.c
View File

@ -1,71 +1,9 @@
/*
* Ceph string constants
* Ceph fs string constants
*/
#include "types.h"
#include <linux/module.h>
#include <linux/ceph/types.h>
const char *ceph_entity_type_name(int type)
{
switch (type) {
case CEPH_ENTITY_TYPE_MDS: return "mds";
case CEPH_ENTITY_TYPE_OSD: return "osd";
case CEPH_ENTITY_TYPE_MON: return "mon";
case CEPH_ENTITY_TYPE_CLIENT: return "client";
case CEPH_ENTITY_TYPE_AUTH: return "auth";
default: return "unknown";
}
}
const char *ceph_osd_op_name(int op)
{
switch (op) {
case CEPH_OSD_OP_READ: return "read";
case CEPH_OSD_OP_STAT: return "stat";
case CEPH_OSD_OP_MASKTRUNC: return "masktrunc";
case CEPH_OSD_OP_WRITE: return "write";
case CEPH_OSD_OP_DELETE: return "delete";
case CEPH_OSD_OP_TRUNCATE: return "truncate";
case CEPH_OSD_OP_ZERO: return "zero";
case CEPH_OSD_OP_WRITEFULL: return "writefull";
case CEPH_OSD_OP_ROLLBACK: return "rollback";
case CEPH_OSD_OP_APPEND: return "append";
case CEPH_OSD_OP_STARTSYNC: return "startsync";
case CEPH_OSD_OP_SETTRUNC: return "settrunc";
case CEPH_OSD_OP_TRIMTRUNC: return "trimtrunc";
case CEPH_OSD_OP_TMAPUP: return "tmapup";
case CEPH_OSD_OP_TMAPGET: return "tmapget";
case CEPH_OSD_OP_TMAPPUT: return "tmapput";
case CEPH_OSD_OP_GETXATTR: return "getxattr";
case CEPH_OSD_OP_GETXATTRS: return "getxattrs";
case CEPH_OSD_OP_SETXATTR: return "setxattr";
case CEPH_OSD_OP_SETXATTRS: return "setxattrs";
case CEPH_OSD_OP_RESETXATTRS: return "resetxattrs";
case CEPH_OSD_OP_RMXATTR: return "rmxattr";
case CEPH_OSD_OP_CMPXATTR: return "cmpxattr";
case CEPH_OSD_OP_PULL: return "pull";
case CEPH_OSD_OP_PUSH: return "push";
case CEPH_OSD_OP_BALANCEREADS: return "balance-reads";
case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads";
case CEPH_OSD_OP_SCRUB: return "scrub";
case CEPH_OSD_OP_WRLOCK: return "wrlock";
case CEPH_OSD_OP_WRUNLOCK: return "wrunlock";
case CEPH_OSD_OP_RDLOCK: return "rdlock";
case CEPH_OSD_OP_RDUNLOCK: return "rdunlock";
case CEPH_OSD_OP_UPLOCK: return "uplock";
case CEPH_OSD_OP_DNLOCK: return "dnlock";
case CEPH_OSD_OP_CALL: return "call";
case CEPH_OSD_OP_PGLS: return "pgls";
}
return "???";
}
const char *ceph_mds_state_name(int s)
{
@ -177,17 +115,3 @@ const char *ceph_snap_op_name(int o)
}
return "???";
}
const char *ceph_pool_op_name(int op)
{
switch (op) {
case POOL_OP_CREATE: return "create";
case POOL_OP_DELETE: return "delete";
case POOL_OP_AUID_CHANGE: return "auid change";
case POOL_OP_CREATE_SNAP: return "create snap";
case POOL_OP_DELETE_SNAP: return "delete snap";
case POOL_OP_CREATE_UNMANAGED_SNAP: return "create unmanaged snap";
case POOL_OP_DELETE_UNMANAGED_SNAP: return "delete unmanaged snap";
}
return "???";
}

1180
fs/ceph/super.c
View File

File diff suppressed because it is too large Load Diff

397
fs/ceph/super.h
View File

@ -1,7 +1,7 @@
#ifndef _FS_CEPH_SUPER_H
#define _FS_CEPH_SUPER_H
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <asm/unaligned.h>
#include <linux/backing-dev.h>
@ -14,13 +14,7 @@
#include <linux/writeback.h>
#include <linux/slab.h>
#include "types.h"
#include "messenger.h"
#include "msgpool.h"
#include "mon_client.h"
#include "mds_client.h"
#include "osd_client.h"
#include "ceph_fs.h"
#include <linux/ceph/libceph.h>
/* f_type in struct statfs */
#define CEPH_SUPER_MAGIC 0x00c36400
@ -30,42 +24,25 @@
#define CEPH_BLOCK_SHIFT 20 /* 1 MB */
#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT)
/*
* Supported features
*/
#define CEPH_FEATURE_SUPPORTED CEPH_FEATURE_NOSRCADDR | CEPH_FEATURE_FLOCK
#define CEPH_FEATURE_REQUIRED CEPH_FEATURE_NOSRCADDR
#define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */
#define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */
#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */
/*
* mount options
*/
#define CEPH_OPT_FSID (1<<0)
#define CEPH_OPT_NOSHARE (1<<1) /* don't share client with other sbs */
#define CEPH_OPT_MYIP (1<<2) /* specified my ip */
#define CEPH_OPT_DIRSTAT (1<<4) /* funky `cat dirname` for stats */
#define CEPH_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */
#define CEPH_OPT_NOCRC (1<<6) /* no data crc on writes */
#define CEPH_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */
#define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES)
#define CEPH_OPT_DEFAULT (CEPH_OPT_RBYTES)
#define ceph_set_mount_opt(fsc, opt) \
(fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt;
#define ceph_test_mount_opt(fsc, opt) \
(!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
#define ceph_set_opt(client, opt) \
(client)->mount_args->flags |= CEPH_OPT_##opt;
#define ceph_test_opt(client, opt) \
(!!((client)->mount_args->flags & CEPH_OPT_##opt))
#define CEPH_MAX_READDIR_DEFAULT 1024
#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
struct ceph_mount_args {
int sb_flags;
struct ceph_mount_options {
int flags;
struct ceph_fsid fsid;
struct ceph_entity_addr my_addr;
int num_mon;
struct ceph_entity_addr *mon_addr;
int mount_timeout;
int osd_idle_ttl;
int osd_timeout;
int osd_keepalive_timeout;
int sb_flags;
int wsize;
int rsize; /* max readahead */
int congestion_kb; /* max writeback in flight */
@ -73,82 +50,25 @@ struct ceph_mount_args {
int cap_release_safety;
int max_readdir; /* max readdir result (entires) */
int max_readdir_bytes; /* max readdir result (bytes) */
/*
* everything above this point can be memcmp'd; everything below
* is handled in compare_mount_options()
*/
char *snapdir_name; /* default ".snap" */
char *name;
char *secret;
};
/*
* defaults
*/
#define CEPH_MOUNT_TIMEOUT_DEFAULT 60
#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */
#define CEPH_OSD_KEEPALIVE_DEFAULT 5
#define CEPH_OSD_IDLE_TTL_DEFAULT 60
#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */
#define CEPH_MAX_READDIR_DEFAULT 1024
#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024)
#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024)
#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
#define CEPH_AUTH_NAME_DEFAULT "guest"
/*
* Delay telling the MDS we no longer want caps, in case we reopen
* the file. Delay a minimum amount of time, even if we send a cap
* message for some other reason. Otherwise, take the oppotunity to
* update the mds to avoid sending another message later.
*/
#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */
#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */
#define CEPH_CAP_RELEASE_SAFETY_DEFAULT (CEPH_CAPS_PER_RELEASE * 4)
/* mount state */
enum {
CEPH_MOUNT_MOUNTING,
CEPH_MOUNT_MOUNTED,
CEPH_MOUNT_UNMOUNTING,
CEPH_MOUNT_UNMOUNTED,
CEPH_MOUNT_SHUTDOWN,
};
/*
* subtract jiffies
*/
static inline unsigned long time_sub(unsigned long a, unsigned long b)
{
BUG_ON(time_after(b, a));
return (long)a - (long)b;
}
/*
* per-filesystem client state
*
* possibly shared by multiple mount points, if they are
* mounting the same ceph filesystem/cluster.
*/
struct ceph_client {
struct ceph_fsid fsid;
bool have_fsid;
struct mutex mount_mutex; /* serialize mount attempts */
struct ceph_mount_args *mount_args;
struct ceph_fs_client {
struct super_block *sb;
struct ceph_mount_options *mount_options;
struct ceph_client *client;
unsigned long mount_state;
wait_queue_head_t auth_wq;
int auth_err;
int min_caps; /* min caps i added */
struct ceph_messenger *msgr; /* messenger instance */
struct ceph_mon_client monc;
struct ceph_mds_client mdsc;
struct ceph_osd_client osdc;
struct ceph_mds_client *mdsc;
/* writeback */
mempool_t *wb_pagevec_pool;
@ -160,14 +80,14 @@ struct ceph_client {
struct backing_dev_info backing_dev_info;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_monmap;
struct dentry *debugfs_mdsmap, *debugfs_osdmap;
struct dentry *debugfs_dir, *debugfs_dentry_lru, *debugfs_caps;
struct dentry *debugfs_dentry_lru, *debugfs_caps;
struct dentry *debugfs_congestion_kb;
struct dentry *debugfs_bdi;
struct dentry *debugfs_mdsc, *debugfs_mdsmap;
#endif
};
/*
* File i/o capability. This tracks shared state with the metadata
* server that allows us to cache or writeback attributes or to read
@ -275,6 +195,20 @@ struct ceph_inode_xattr {
int should_free_val;
};
/*
* Ceph dentry state
*/
struct ceph_dentry_info {
struct ceph_mds_session *lease_session;
u32 lease_gen, lease_shared_gen;
u32 lease_seq;
unsigned long lease_renew_after, lease_renew_from;
struct list_head lru;
struct dentry *dentry;
u64 time;
u64 offset;
};
struct ceph_inode_xattrs_info {
/*
* (still encoded) xattr blob. we avoid the overhead of parsing
@ -296,11 +230,6 @@ struct ceph_inode_xattrs_info {
/*
* Ceph inode.
*/
#define CEPH_I_COMPLETE 1 /* we have complete directory cached */
#define CEPH_I_NODELAY 4 /* do not delay cap release */
#define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */
#define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */
struct ceph_inode_info {
struct ceph_vino i_vino; /* ceph ino + snap */
@ -391,6 +320,63 @@ static inline struct ceph_inode_info *ceph_inode(struct inode *inode)
return container_of(inode, struct ceph_inode_info, vfs_inode);
}
static inline struct ceph_vino ceph_vino(struct inode *inode)
{
return ceph_inode(inode)->i_vino;
}
/*
* ino_t is <64 bits on many architectures, blech.
*
* don't include snap in ino hash, at least for now.
*/
static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
{
ino_t ino = (ino_t)vino.ino; /* ^ (vino.snap << 20); */
#if BITS_PER_LONG == 32
ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8;
if (!ino)
ino = 1;
#endif
return ino;
}
/* for printf-style formatting */
#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
static inline u64 ceph_ino(struct inode *inode)
{
return ceph_inode(inode)->i_vino.ino;
}
static inline u64 ceph_snap(struct inode *inode)
{
return ceph_inode(inode)->i_vino.snap;
}
static inline int ceph_ino_compare(struct inode *inode, void *data)
{
struct ceph_vino *pvino = (struct ceph_vino *)data;
struct ceph_inode_info *ci = ceph_inode(inode);
return ci->i_vino.ino == pvino->ino &&
ci->i_vino.snap == pvino->snap;
}
static inline struct inode *ceph_find_inode(struct super_block *sb,
struct ceph_vino vino)
{
ino_t t = ceph_vino_to_ino(vino);
return ilookup5(sb, t, ceph_ino_compare, &vino);
}
/*
* Ceph inode.
*/
#define CEPH_I_COMPLETE 1 /* we have complete directory cached */
#define CEPH_I_NODELAY 4 /* do not delay cap release */
#define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */
#define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */
static inline void ceph_i_clear(struct inode *inode, unsigned mask)
{
struct ceph_inode_info *ci = ceph_inode(inode);
@ -432,20 +418,6 @@ extern u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v,
struct ceph_inode_frag *pfrag,
int *found);
/*
* Ceph dentry state
*/
struct ceph_dentry_info {
struct ceph_mds_session *lease_session;
u32 lease_gen, lease_shared_gen;
u32 lease_seq;
unsigned long lease_renew_after, lease_renew_from;
struct list_head lru;
struct dentry *dentry;
u64 time;
u64 offset;
};
static inline struct ceph_dentry_info *ceph_dentry(struct dentry *dentry)
{
return (struct ceph_dentry_info *)dentry->d_fsdata;
@ -456,22 +428,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
return ((loff_t)frag << 32) | (loff_t)off;
}
/*
* ino_t is <64 bits on many architectures, blech.
*
* don't include snap in ino hash, at least for now.
*/
static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
{
ino_t ino = (ino_t)vino.ino; /* ^ (vino.snap << 20); */
#if BITS_PER_LONG == 32
ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8;
if (!ino)
ino = 1;
#endif
return ino;
}
static inline int ceph_set_ino_cb(struct inode *inode, void *data)
{
ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
@ -479,39 +435,6 @@ static inline int ceph_set_ino_cb(struct inode *inode, void *data)
return 0;
}
static inline struct ceph_vino ceph_vino(struct inode *inode)
{
return ceph_inode(inode)->i_vino;
}
/* for printf-style formatting */
#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
static inline u64 ceph_ino(struct inode *inode)
{
return ceph_inode(inode)->i_vino.ino;
}
static inline u64 ceph_snap(struct inode *inode)
{
return ceph_inode(inode)->i_vino.snap;
}
static inline int ceph_ino_compare(struct inode *inode, void *data)
{
struct ceph_vino *pvino = (struct ceph_vino *)data;
struct ceph_inode_info *ci = ceph_inode(inode);
return ci->i_vino.ino == pvino->ino &&
ci->i_vino.snap == pvino->snap;
}
static inline struct inode *ceph_find_inode(struct super_block *sb,
struct ceph_vino vino)
{
ino_t t = ceph_vino_to_ino(vino);
return ilookup5(sb, t, ceph_ino_compare, &vino);
}
/*
* caps helpers
*/
@ -576,18 +499,18 @@ extern int ceph_reserve_caps(struct ceph_mds_client *mdsc,
struct ceph_cap_reservation *ctx, int need);
extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc,
struct ceph_cap_reservation *ctx);
extern void ceph_reservation_status(struct ceph_client *client,
extern void ceph_reservation_status(struct ceph_fs_client *client,
int *total, int *avail, int *used,
int *reserved, int *min);
static inline struct ceph_client *ceph_inode_to_client(struct inode *inode)
static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
{
return (struct ceph_client *)inode->i_sb->s_fs_info;
return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
}
static inline struct ceph_client *ceph_sb_to_client(struct super_block *sb)
static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
{
return (struct ceph_client *)sb->s_fs_info;
return (struct ceph_fs_client *)sb->s_fs_info;
}
@ -616,51 +539,6 @@ struct ceph_file_info {
/*
* snapshots
*/
/*
* A "snap context" is the set of existing snapshots when we
* write data. It is used by the OSD to guide its COW behavior.
*
* The ceph_snap_context is refcounted, and attached to each dirty
* page, indicating which context the dirty data belonged when it was
* dirtied.
*/
struct ceph_snap_context {
atomic_t nref;
u64 seq;
int num_snaps;
u64 snaps[];
};
static inline struct ceph_snap_context *
ceph_get_snap_context(struct ceph_snap_context *sc)
{
/*
printk("get_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
atomic_read(&sc->nref)+1);
*/
if (sc)
atomic_inc(&sc->nref);
return sc;
}
static inline void ceph_put_snap_context(struct ceph_snap_context *sc)
{
if (!sc)
return;
/*
printk("put_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
atomic_read(&sc->nref)-1);
*/
if (atomic_dec_and_test(&sc->nref)) {
/*printk(" deleting snap_context %p\n", sc);*/
kfree(sc);
}
}
/*
* A "snap realm" describes a subset of the file hierarchy sharing
* the same set of snapshots that apply to it. The realms themselves
@ -699,16 +577,33 @@ struct ceph_snap_realm {
spinlock_t inodes_with_caps_lock;
};
/*
* calculate the number of pages a given length and offset map onto,
* if we align the data.
*/
static inline int calc_pages_for(u64 off, u64 len)
static inline int default_congestion_kb(void)
{
return ((off+len+PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) -
(off >> PAGE_CACHE_SHIFT);
int congestion_kb;
/*
* Copied from NFS
*
* congestion size, scale with available memory.
*
* 64MB: 8192k
* 128MB: 11585k
* 256MB: 16384k
* 512MB: 23170k
* 1GB: 32768k
* 2GB: 46340k
* 4GB: 65536k
* 8GB: 92681k
* 16GB: 131072k
*
* This allows larger machines to have larger/more transfers.
* Limit the default to 256M
*/
congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10);
if (congestion_kb > 256*1024)
congestion_kb = 256*1024;
return congestion_kb;
}
@ -741,16 +636,6 @@ static inline bool __ceph_have_pending_cap_snap(struct ceph_inode_info *ci)
ci_item)->writing;
}
/* super.c */
extern struct kmem_cache *ceph_inode_cachep;
extern struct kmem_cache *ceph_cap_cachep;
extern struct kmem_cache *ceph_dentry_cachep;
extern struct kmem_cache *ceph_file_cachep;
extern const char *ceph_msg_type_name(int type);
extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
/* inode.c */
extern const struct inode_operations ceph_file_iops;
@ -857,12 +742,18 @@ extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
/* file.c */
extern const struct file_operations ceph_file_fops;
extern const struct address_space_operations ceph_aops;
extern int ceph_copy_to_page_vector(struct page **pages,
const char *data,
loff_t off, size_t len);
extern int ceph_copy_from_page_vector(struct page **pages,
char *data,
loff_t off, size_t len);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_open(struct inode *inode, struct file *file);
extern struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
struct nameidata *nd, int mode,
int locked_dir);
extern int ceph_release(struct inode *inode, struct file *filp);
extern void ceph_release_page_vector(struct page **pages, int num_pages);
/* dir.c */
extern const struct file_operations ceph_dir_fops;
@ -892,12 +783,6 @@ extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
/* export.c */
extern const struct export_operations ceph_export_ops;
/* debugfs.c */
extern int ceph_debugfs_init(void);
extern void ceph_debugfs_cleanup(void);
extern int ceph_debugfs_client_init(struct ceph_client *client);
extern void ceph_debugfs_client_cleanup(struct ceph_client *client);
/* locks.c */
extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl);
extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl);
@ -914,4 +799,8 @@ static inline struct inode *get_dentry_parent_inode(struct dentry *dentry)
return NULL;
}
/* debugfs.c */
extern int ceph_fs_debugfs_init(struct ceph_fs_client *client);
extern void ceph_fs_debugfs_cleanup(struct ceph_fs_client *client);
#endif /* _FS_CEPH_SUPER_H */

15
fs/ceph/xattr.c
View File

@ -1,6 +1,9 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include "super.h"
#include "decode.h"
#include "mds_client.h"
#include <linux/ceph/decode.h>
#include <linux/xattr.h>
#include <linux/slab.h>
@ -620,12 +623,12 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
static int ceph_sync_setxattr(struct dentry *dentry, const char *name,
const char *value, size_t size, int flags)
{
struct ceph_client *client = ceph_sb_to_client(dentry->d_sb);
struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
struct inode *inode = dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct inode *parent_inode = dentry->d_parent->d_inode;
struct ceph_mds_request *req;
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_mds_client *mdsc = fsc->mdsc;
int err;
int i, nr_pages;
struct page **pages = NULL;
@ -777,8 +780,8 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
static int ceph_send_removexattr(struct dentry *dentry, const char *name)
{
struct ceph_client *client = ceph_sb_to_client(dentry->d_sb);
struct ceph_mds_client *mdsc = &client->mdsc;
struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct inode *inode = dentry->d_inode;
struct inode *parent_inode = dentry->d_parent->d_inode;
struct ceph_mds_request *req;

4
fs/ceph/auth.h → include/linux/ceph/auth.h
View File

@ -1,8 +1,8 @@
#ifndef _FS_CEPH_AUTH_H
#define _FS_CEPH_AUTH_H
#include "types.h"
#include "buffer.h"
#include <linux/ceph/types.h>
#include <linux/ceph/buffer.h>
/*
* Abstract interface for communicating with the authenticate module.

0
fs/ceph/buffer.h → include/linux/ceph/buffer.h
View File

5
fs/ceph/ceph_debug.h → include/linux/ceph/ceph_debug.h
View File

@ -3,7 +3,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#ifdef CONFIG_CEPH_FS_PRETTYDEBUG
#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
/*
* wrap pr_debug to include a filename:lineno prefix on each line.
@ -14,7 +14,8 @@
# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
extern const char *ceph_file_part(const char *s, int len);
# define dout(fmt, ...) \
pr_debug(" %12.12s:%-4d : " fmt, \
pr_debug("%.*s %12.12s:%-4d : " fmt, \
8 - (int)sizeof(KBUILD_MODNAME), " ", \
ceph_file_part(__FILE__, sizeof(__FILE__)), \
__LINE__, ##__VA_ARGS__)
# else

0
fs/ceph/ceph_frag.h → include/linux/ceph/ceph_frag.h
View File

0
fs/ceph/ceph_fs.h → include/linux/ceph/ceph_fs.h
View File

0
fs/ceph/ceph_hash.h → include/linux/ceph/ceph_hash.h
View File

33
include/linux/ceph/debugfs.h Normal file
View File

@ -0,0 +1,33 @@
#ifndef _FS_CEPH_DEBUGFS_H
#define _FS_CEPH_DEBUGFS_H
#include "ceph_debug.h"
#include "types.h"
#define CEPH_DEFINE_SHOW_FUNC(name) \
static int name##_open(struct inode *inode, struct file *file) \
{ \
struct seq_file *sf; \
int ret; \
\
ret = single_open(file, name, NULL); \
sf = file->private_data; \
sf->private = inode->i_private; \
return ret; \
} \
\
static const struct file_operations name##_fops = { \
.open = name##_open, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
};
/* debugfs.c */
extern int ceph_debugfs_init(void);
extern void ceph_debugfs_cleanup(void);
extern int ceph_debugfs_client_init(struct ceph_client *client);
extern void ceph_debugfs_client_cleanup(struct ceph_client *client);
#endif

0
fs/ceph/decode.h → include/linux/ceph/decode.h
View File

249
include/linux/ceph/libceph.h Normal file
View File

@ -0,0 +1,249 @@
#ifndef _FS_CEPH_LIBCEPH_H
#define _FS_CEPH_LIBCEPH_H
#include "ceph_debug.h"
#include <asm/unaligned.h>
#include <linux/backing-dev.h>
#include <linux/completion.h>
#include <linux/exportfs.h>
#include <linux/fs.h>
#include <linux/mempool.h>
#include <linux/pagemap.h>
#include <linux/wait.h>
#include <linux/writeback.h>
#include <linux/slab.h>
#include "types.h"
#include "messenger.h"
#include "msgpool.h"
#include "mon_client.h"
#include "osd_client.h"
#include "ceph_fs.h"
/*
* Supported features
*/
#define CEPH_FEATURE_SUPPORTED_DEFAULT CEPH_FEATURE_NOSRCADDR
#define CEPH_FEATURE_REQUIRED_DEFAULT CEPH_FEATURE_NOSRCADDR
/*
* mount options
*/
#define CEPH_OPT_FSID (1<<0)
#define CEPH_OPT_NOSHARE (1<<1) /* don't share client with other sbs */
#define CEPH_OPT_MYIP (1<<2) /* specified my ip */
#define CEPH_OPT_NOCRC (1<<3) /* no data crc on writes */
#define CEPH_OPT_DEFAULT (0);
#define ceph_set_opt(client, opt) \
(client)->options->flags |= CEPH_OPT_##opt;
#define ceph_test_opt(client, opt) \
(!!((client)->options->flags & CEPH_OPT_##opt))
struct ceph_options {
int flags;
struct ceph_fsid fsid;
struct ceph_entity_addr my_addr;
int mount_timeout;
int osd_idle_ttl;
int osd_timeout;
int osd_keepalive_timeout;
/*
* any type that can't be simply compared or doesn't need need
* to be compared should go beyond this point,
* ceph_compare_options() should be updated accordingly
*/
struct ceph_entity_addr *mon_addr; /* should be the first
pointer type of args */
int num_mon;
char *name;
char *secret;
};
/*
* defaults
*/
#define CEPH_MOUNT_TIMEOUT_DEFAULT 60
#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */
#define CEPH_OSD_KEEPALIVE_DEFAULT 5
#define CEPH_OSD_IDLE_TTL_DEFAULT 60
#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */
#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024)
#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024)
#define CEPH_AUTH_NAME_DEFAULT "guest"
/*
* Delay telling the MDS we no longer want caps, in case we reopen
* the file. Delay a minimum amount of time, even if we send a cap
* message for some other reason. Otherwise, take the oppotunity to
* update the mds to avoid sending another message later.
*/
#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */
#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */
#define CEPH_CAP_RELEASE_SAFETY_DEFAULT (CEPH_CAPS_PER_RELEASE * 4)
/* mount state */
enum {
CEPH_MOUNT_MOUNTING,
CEPH_MOUNT_MOUNTED,
CEPH_MOUNT_UNMOUNTING,
CEPH_MOUNT_UNMOUNTED,
CEPH_MOUNT_SHUTDOWN,
};
/*
* subtract jiffies
*/
static inline unsigned long time_sub(unsigned long a, unsigned long b)
{
BUG_ON(time_after(b, a));
return (long)a - (long)b;
}
struct ceph_mds_client;
/*
* per client state
*
* possibly shared by multiple mount points, if they are
* mounting the same ceph filesystem/cluster.
*/
struct ceph_client {
struct ceph_fsid fsid;
bool have_fsid;
void *private;
struct ceph_options *options;
struct mutex mount_mutex; /* serialize mount attempts */
wait_queue_head_t auth_wq;
int auth_err;
int (*extra_mon_dispatch)(struct ceph_client *, struct ceph_msg *);
u32 supported_features;
u32 required_features;
struct ceph_messenger *msgr; /* messenger instance */
struct ceph_mon_client monc;
struct ceph_osd_client osdc;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_dir;
struct dentry *debugfs_monmap;
struct dentry *debugfs_osdmap;
#endif
};
/*
* snapshots
*/
/*
* A "snap context" is the set of existing snapshots when we
* write data. It is used by the OSD to guide its COW behavior.
*
* The ceph_snap_context is refcounted, and attached to each dirty
* page, indicating which context the dirty data belonged when it was
* dirtied.
*/
struct ceph_snap_context {
atomic_t nref;
u64 seq;
int num_snaps;
u64 snaps[];
};
static inline struct ceph_snap_context *
ceph_get_snap_context(struct ceph_snap_context *sc)
{
/*
printk("get_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
atomic_read(&sc->nref)+1);
*/
if (sc)
atomic_inc(&sc->nref);
return sc;
}
static inline void ceph_put_snap_context(struct ceph_snap_context *sc)
{
if (!sc)
return;
/*
printk("put_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
atomic_read(&sc->nref)-1);
*/
if (atomic_dec_and_test(&sc->nref)) {
/*printk(" deleting snap_context %p\n", sc);*/
kfree(sc);
}
}
/*
* calculate the number of pages a given length and offset map onto,
* if we align the data.
*/
static inline int calc_pages_for(u64 off, u64 len)
{
return ((off+len+PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) -
(off >> PAGE_CACHE_SHIFT);
}
/* ceph_common.c */
extern const char *ceph_msg_type_name(int type);
extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
extern struct kmem_cache *ceph_inode_cachep;
extern struct kmem_cache *ceph_cap_cachep;
extern struct kmem_cache *ceph_dentry_cachep;
extern struct kmem_cache *ceph_file_cachep;
extern int ceph_parse_options(struct ceph_options **popt, char *options,
const char *dev_name, const char *dev_name_end,
int (*parse_extra_token)(char *c, void *private),
void *private);
extern void ceph_destroy_options(struct ceph_options *opt);
extern int ceph_compare_options(struct ceph_options *new_opt,
struct ceph_client *client);
extern struct ceph_client *ceph_create_client(struct ceph_options *opt,
void *private);
extern u64 ceph_client_id(struct ceph_client *client);
extern void ceph_destroy_client(struct ceph_client *client);
extern int __ceph_open_session(struct ceph_client *client,
unsigned long started);
extern int ceph_open_session(struct ceph_client *client);
/* pagevec.c */
extern void ceph_release_page_vector(struct page **pages, int num_pages);
extern struct page **ceph_get_direct_page_vector(const char __user *data,
int num_pages,
loff_t off, size_t len);
extern void ceph_put_page_vector(struct page **pages, int num_pages);
extern void ceph_release_page_vector(struct page **pages, int num_pages);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_copy_user_to_page_vector(struct page **pages,
const char __user *data,
loff_t off, size_t len);
extern int ceph_copy_to_page_vector(struct page **pages,
const char *data,
loff_t off, size_t len);
extern int ceph_copy_from_page_vector(struct page **pages,
char *data,
loff_t off, size_t len);
extern int ceph_copy_page_vector_to_user(struct page **pages, char __user *data,
loff_t off, size_t len);
extern void ceph_zero_page_vector_range(int off, int len, struct page **pages);
#endif /* _FS_CEPH_SUPER_H */

0
fs/ceph/mdsmap.h → include/linux/ceph/mdsmap.h
View File

8
fs/ceph/messenger.h → include/linux/ceph/messenger.h
View File

@ -65,6 +65,9 @@ struct ceph_messenger {
*/
u32 global_seq;
spinlock_t global_seq_lock;
u32 supported_features;
u32 required_features;
};
/*
@ -209,7 +212,7 @@ struct ceph_connection {
};
extern const char *pr_addr(const struct sockaddr_storage *ss);
extern const char *ceph_pr_addr(const struct sockaddr_storage *ss);
extern int ceph_parse_ips(const char *c, const char *end,
struct ceph_entity_addr *addr,
int max_count, int *count);
@ -220,7 +223,8 @@ extern void ceph_msgr_exit(void);
extern void ceph_msgr_flush(void);
extern struct ceph_messenger *ceph_messenger_create(
struct ceph_entity_addr *myaddr);
struct ceph_entity_addr *myaddr,
u32 features, u32 required);
extern void ceph_messenger_destroy(struct ceph_messenger *);
extern void ceph_con_init(struct ceph_messenger *msgr,

1
fs/ceph/mon_client.h → include/linux/ceph/mon_client.h
View File

@ -79,6 +79,7 @@ struct ceph_mon_client {
u64 last_tid;
/* mds/osd map */
int want_mdsmap;
int want_next_osdmap; /* 1 = want, 2 = want+asked */
u32 have_osdmap, have_mdsmap;

0
fs/ceph/msgpool.h → include/linux/ceph/msgpool.h
View File

0
fs/ceph/msgr.h → include/linux/ceph/msgr.h
View File

1
fs/ceph/osd_client.h → include/linux/ceph/osd_client.h
View File

@ -69,6 +69,7 @@ struct ceph_osd_request {
struct list_head r_unsafe_item;
struct inode *r_inode; /* for use by callbacks */
void *r_priv; /* ditto */
char r_oid[40]; /* object name */
int r_oid_len;

2
fs/ceph/osdmap.h → include/linux/ceph/osdmap.h
View File

@ -4,7 +4,7 @@
#include <linux/rbtree.h>
#include "types.h"
#include "ceph_fs.h"
#include "crush/crush.h"
#include <linux/crush/crush.h>
/*
* The osd map describes the current membership of the osd cluster and

0
fs/ceph/pagelist.h → include/linux/ceph/pagelist.h
View File

0
fs/ceph/rados.h → include/linux/ceph/rados.h
View File

0
fs/ceph/types.h → include/linux/ceph/types.h
View File

0
fs/ceph/crush/crush.h → include/linux/crush/crush.h
View File

0
fs/ceph/crush/hash.h → include/linux/crush/hash.h
View File

0
fs/ceph/crush/mapper.h → include/linux/crush/mapper.h
View File

1
net/Kconfig
View File

@ -293,6 +293,7 @@ source "net/wimax/Kconfig"
source "net/rfkill/Kconfig"
source "net/9p/Kconfig"
source "net/caif/Kconfig"
source "net/ceph/Kconfig"
endif # if NET

1
net/Makefile
View File

@ -68,3 +68,4 @@ obj-$(CONFIG_SYSCTL) += sysctl_net.o
endif
obj-$(CONFIG_WIMAX) += wimax/
obj-$(CONFIG_DNS_RESOLVER) += dns_resolver/
obj-$(CONFIG_CEPH_LIB) += ceph/

28
net/ceph/Kconfig Normal file
View File

@ -0,0 +1,28 @@
config CEPH_LIB
tristate "Ceph core library (EXPERIMENTAL)"
depends on INET && EXPERIMENTAL
select LIBCRC32C
select CRYPTO_AES
select CRYPTO
default n
help
Choose Y or M here to include cephlib, which provides the
common functionality to both the Ceph filesystem and
to the rados block device (rbd).
More information at http://ceph.newdream.net/.
If unsure, say N.
config CEPH_LIB_PRETTYDEBUG
bool "Include file:line in ceph debug output"
depends on CEPH_LIB
default n
help
If you say Y here, debug output will include a filename and
line to aid debugging. This increases kernel size and slows
execution slightly when debug call sites are enabled (e.g.,
via CONFIG_DYNAMIC_DEBUG).
If unsure, say N.

37
net/ceph/Makefile Normal file
View File

@ -0,0 +1,37 @@
#
# Makefile for CEPH filesystem.
#
ifneq ($(KERNELRELEASE),)
obj-$(CONFIG_CEPH_LIB) += libceph.o
libceph-objs := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
mon_client.o \
osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \
debugfs.o \
auth.o auth_none.o \
crypto.o armor.o \
auth_x.o \
ceph_fs.o ceph_strings.o ceph_hash.o \
pagevec.o
else
#Otherwise we were called directly from the command
# line; invoke the kernel build system.
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
default: all
all:
$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules
modules_install:
$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules_install
clean:
$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
endif

0
fs/ceph/armor.c → net/ceph/armor.c
View File

10
fs/ceph/auth.c → net/ceph/auth.c
View File

@ -1,16 +1,16 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/slab.h>
#include "types.h"
#include <linux/ceph/types.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/messenger.h>
#include "auth_none.h"
#include "auth_x.h"
#include "decode.h"
#include "super.h"
#include "messenger.h"
/*
* get protocol handler

7
fs/ceph/auth_none.c → net/ceph/auth_none.c
View File

@ -1,14 +1,15 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/auth.h>
#include "auth_none.h"
#include "auth.h"
#include "decode.h"
static void reset(struct ceph_auth_client *ac)
{

3
fs/ceph/auth_none.h → net/ceph/auth_none.h
View File

@ -2,8 +2,7 @@
#define _FS_CEPH_AUTH_NONE_H
#include <linux/slab.h>
#include "auth.h"
#include <linux/ceph/auth.h>
/*
* null security mode.

9
fs/ceph/auth_x.c → net/ceph/auth_x.c
View File

@ -1,16 +1,17 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/auth.h>
#include "crypto.h"
#include "auth_x.h"
#include "auth_x_protocol.h"
#include "crypto.h"
#include "auth.h"
#include "decode.h"
#define TEMP_TICKET_BUF_LEN 256

3
fs/ceph/auth_x.h → net/ceph/auth_x.h
View File

@ -3,8 +3,9 @@
#include <linux/rbtree.h>
#include <linux/ceph/auth.h>
#include "crypto.h"
#include "auth.h"
#include "auth_x_protocol.h"
/*

0
fs/ceph/auth_x_protocol.h → net/ceph/auth_x_protocol.h
View File

9
fs/ceph/buffer.c → net/ceph/buffer.c
View File

@ -1,10 +1,11 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/slab.h>
#include "buffer.h"
#include "decode.h"
#include <linux/ceph/buffer.h>
#include <linux/ceph/decode.h>
struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp)
{
@ -32,6 +33,7 @@ struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp)
dout("buffer_new %p\n", b);
return b;
}
EXPORT_SYMBOL(ceph_buffer_new);
void ceph_buffer_release(struct kref *kref)
{
@ -46,6 +48,7 @@ void ceph_buffer_release(struct kref *kref)
}
kfree(b);
}
EXPORT_SYMBOL(ceph_buffer_release);
int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end)
{

529
net/ceph/ceph_common.c Normal file
View File

@ -0,0 +1,529 @@
#include <linux/ceph/ceph_debug.h>
#include <linux/backing-dev.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/inet.h>
#include <linux/in6.h>
#include <linux/module.h>
#include <linux/mount.h>
#include <linux/parser.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/statfs.h>
#include <linux/string.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/debugfs.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/auth.h>
/*
* find filename portion of a path (/foo/bar/baz -> baz)
*/
const char *ceph_file_part(const char *s, int len)
{
const char *e = s + len;
while (e != s && *(e-1) != '/')
e--;
return e;
}
EXPORT_SYMBOL(ceph_file_part);
const char *ceph_msg_type_name(int type)
{
switch (type) {
case CEPH_MSG_SHUTDOWN: return "shutdown";
case CEPH_MSG_PING: return "ping";
case CEPH_MSG_AUTH: return "auth";
case CEPH_MSG_AUTH_REPLY: return "auth_reply";
case CEPH_MSG_MON_MAP: return "mon_map";
case CEPH_MSG_MON_GET_MAP: return "mon_get_map";
case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe";
case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
case CEPH_MSG_STATFS: return "statfs";
case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
case CEPH_MSG_MDS_MAP: return "mds_map";
case CEPH_MSG_CLIENT_SESSION: return "client_session";
case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
case CEPH_MSG_CLIENT_REQUEST: return "client_request";
case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
case CEPH_MSG_CLIENT_REPLY: return "client_reply";
case CEPH_MSG_CLIENT_CAPS: return "client_caps";
case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
case CEPH_MSG_CLIENT_SNAP: return "client_snap";
case CEPH_MSG_CLIENT_LEASE: return "client_lease";
case CEPH_MSG_OSD_MAP: return "osd_map";
case CEPH_MSG_OSD_OP: return "osd_op";
case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
default: return "unknown";
}
}
EXPORT_SYMBOL(ceph_msg_type_name);
/*
* Initially learn our fsid, or verify an fsid matches.
*/
int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
{
if (client->have_fsid) {
if (ceph_fsid_compare(&client->fsid, fsid)) {
pr_err("bad fsid, had %pU got %pU",
&client->fsid, fsid);
return -1;
}
} else {
pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid);
memcpy(&client->fsid, fsid, sizeof(*fsid));
ceph_debugfs_client_init(client);
client->have_fsid = true;
}
return 0;
}
EXPORT_SYMBOL(ceph_check_fsid);
static int strcmp_null(const char *s1, const char *s2)
{
if (!s1 && !s2)
return 0;
if (s1 && !s2)
return -1;
if (!s1 && s2)
return 1;
return strcmp(s1, s2);
}
int ceph_compare_options(struct ceph_options *new_opt,
struct ceph_client *client)
{
struct ceph_options *opt1 = new_opt;
struct ceph_options *opt2 = client->options;
int ofs = offsetof(struct ceph_options, mon_addr);
int i;
int ret;
ret = memcmp(opt1, opt2, ofs);
if (ret)
return ret;
ret = strcmp_null(opt1->name, opt2->name);
if (ret)
return ret;
ret = strcmp_null(opt1->secret, opt2->secret);
if (ret)
return ret;
/* any matching mon ip implies a match */
for (i = 0; i < opt1->num_mon; i++) {
if (ceph_monmap_contains(client->monc.monmap,
&opt1->mon_addr[i]))
return 0;
}
return -1;
}
EXPORT_SYMBOL(ceph_compare_options);
static int parse_fsid(const char *str, struct ceph_fsid *fsid)
{
int i = 0;
char tmp[3];
int err = -EINVAL;
int d;
dout("parse_fsid '%s'\n", str);
tmp[2] = 0;
while (*str && i < 16) {
if (ispunct(*str)) {
str++;
continue;
}
if (!isxdigit(str[0]) || !isxdigit(str[1]))
break;
tmp[0] = str[0];
tmp[1] = str[1];
if (sscanf(tmp, "%x", &d) < 1)
break;
fsid->fsid[i] = d & 0xff;
i++;
str += 2;
}
if (i == 16)
err = 0;
dout("parse_fsid ret %d got fsid %pU", err, fsid);
return err;
}
/*
* ceph options
*/
enum {
Opt_osdtimeout,
Opt_osdkeepalivetimeout,
Opt_mount_timeout,
Opt_osd_idle_ttl,
Opt_last_int,
/* int args above */
Opt_fsid,
Opt_name,
Opt_secret,
Opt_ip,
Opt_last_string,
/* string args above */
Opt_noshare,
Opt_nocrc,
};
static match_table_t opt_tokens = {
{Opt_osdtimeout, "osdtimeout=%d"},
{Opt_osdkeepalivetimeout, "osdkeepalive=%d"},
{Opt_mount_timeout, "mount_timeout=%d"},
{Opt_osd_idle_ttl, "osd_idle_ttl=%d"},
/* int args above */
{Opt_fsid, "fsid=%s"},
{Opt_name, "name=%s"},
{Opt_secret, "secret=%s"},
{Opt_ip, "ip=%s"},
/* string args above */
{Opt_noshare, "noshare"},
{Opt_nocrc, "nocrc"},
{-1, NULL}
};
void ceph_destroy_options(struct ceph_options *opt)
{
dout("destroy_options %p\n", opt);
kfree(opt->name);
kfree(opt->secret);
kfree(opt);
}
EXPORT_SYMBOL(ceph_destroy_options);
int ceph_parse_options(struct ceph_options **popt, char *options,
const char *dev_name, const char *dev_name_end,
int (*parse_extra_token)(char *c, void *private),
void *private)
{
struct ceph_options *opt;
const char *c;
int err = -ENOMEM;
substring_t argstr[MAX_OPT_ARGS];
opt = kzalloc(sizeof(*opt), GFP_KERNEL);
if (!opt)
return err;
opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
GFP_KERNEL);
if (!opt->mon_addr)
goto out;
dout("parse_options %p options '%s' dev_name '%s'\n", opt, options,
dev_name);
/* start with defaults */
opt->flags = CEPH_OPT_DEFAULT;
opt->osd_timeout = CEPH_OSD_TIMEOUT_DEFAULT;
opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */
opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */
/* get mon ip(s) */
/* ip1[:port1][,ip2[:port2]...] */
err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr,
CEPH_MAX_MON, &opt->num_mon);
if (err < 0)
goto out;
/* parse mount options */
while ((c = strsep(&options, ",")) != NULL) {
int token, intval, ret;
if (!*c)
continue;
err = -EINVAL;
token = match_token((char *)c, opt_tokens, argstr);
if (token < 0) {
/* extra? */
err = parse_extra_token((char *)c, private);
if (err < 0) {
pr_err("bad option at '%s'\n", c);
goto out;
}
continue;
}
if (token < Opt_last_int) {
ret = match_int(&argstr[0], &intval);
if (ret < 0) {
pr_err("bad mount option arg (not int) "
"at '%s'\n", c);
continue;
}
dout("got int token %d val %d\n", token, intval);
} else if (token > Opt_last_int && token < Opt_last_string) {
dout("got string token %d val %s\n", token,
argstr[0].from);
} else {
dout("got token %d\n", token);
}
switch (token) {
case Opt_ip:
err = ceph_parse_ips(argstr[0].from,
argstr[0].to,
&opt->my_addr,
1, NULL);
if (err < 0)
goto out;
opt->flags |= CEPH_OPT_MYIP;
break;
case Opt_fsid:
err = parse_fsid(argstr[0].from, &opt->fsid);
if (err == 0)
opt->flags |= CEPH_OPT_FSID;
break;
case Opt_name:
opt->name = kstrndup(argstr[0].from,
argstr[0].to-argstr[0].from,
GFP_KERNEL);
break;
case Opt_secret:
opt->secret = kstrndup(argstr[0].from,
argstr[0].to-argstr[0].from,
GFP_KERNEL);
break;
/* misc */
case Opt_osdtimeout:
opt->osd_timeout = intval;
break;
case Opt_osdkeepalivetimeout:
opt->osd_keepalive_timeout = intval;
break;
case Opt_osd_idle_ttl:
opt->osd_idle_ttl = intval;
break;
case Opt_mount_timeout:
opt->mount_timeout = intval;
break;
case Opt_noshare:
opt->flags |= CEPH_OPT_NOSHARE;
break;
case Opt_nocrc:
opt->flags |= CEPH_OPT_NOCRC;
break;
default:
BUG_ON(token);
}
}
/* success */
*popt = opt;
return 0;
out:
ceph_destroy_options(opt);
return err;
}
EXPORT_SYMBOL(ceph_parse_options);
u64 ceph_client_id(struct ceph_client *client)
{
return client->monc.auth->global_id;
}
EXPORT_SYMBOL(ceph_client_id);
/*
* create a fresh client instance
*/
struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
{
struct ceph_client *client;
int err = -ENOMEM;
client = kzalloc(sizeof(*client), GFP_KERNEL);
if (client == NULL)
return ERR_PTR(-ENOMEM);
client->private = private;
client->options = opt;
mutex_init(&client->mount_mutex);
init_waitqueue_head(&client->auth_wq);
client->auth_err = 0;
client->extra_mon_dispatch = NULL;
client->supported_features = CEPH_FEATURE_SUPPORTED_DEFAULT;
client->required_features = CEPH_FEATURE_REQUIRED_DEFAULT;
client->msgr = NULL;
/* subsystems */
err = ceph_monc_init(&client->monc, client);
if (err < 0)
goto fail;
err = ceph_osdc_init(&client->osdc, client);
if (err < 0)
goto fail_monc;
return client;
fail_monc:
ceph_monc_stop(&client->monc);
fail:
kfree(client);
return ERR_PTR(err);
}
EXPORT_SYMBOL(ceph_create_client);
void ceph_destroy_client(struct ceph_client *client)
{
dout("destroy_client %p\n", client);
/* unmount */
ceph_osdc_stop(&client->osdc);
/*
* make sure mds and osd connections close out before destroying
* the auth module, which is needed to free those connections'
* ceph_authorizers.
*/
ceph_msgr_flush();
ceph_monc_stop(&client->monc);
ceph_debugfs_client_cleanup(client);
if (client->msgr)
ceph_messenger_destroy(client->msgr);
ceph_destroy_options(client->options);
kfree(client);
dout("destroy_client %p done\n", client);
}
EXPORT_SYMBOL(ceph_destroy_client);
/*
* true if we have the mon map (and have thus joined the cluster)
*/
static int have_mon_and_osd_map(struct ceph_client *client)
{
return client->monc.monmap && client->monc.monmap->epoch &&
client->osdc.osdmap && client->osdc.osdmap->epoch;
}
/*
* mount: join the ceph cluster, and open root directory.
*/
int __ceph_open_session(struct ceph_client *client, unsigned long started)
{
struct ceph_entity_addr *myaddr = NULL;
int err;
unsigned long timeout = client->options->mount_timeout * HZ;
/* initialize the messenger */
if (client->msgr == NULL) {
if (ceph_test_opt(client, MYIP))
myaddr = &client->options->my_addr;
client->msgr = ceph_messenger_create(myaddr,
client->supported_features,
client->required_features);
if (IS_ERR(client->msgr)) {
client->msgr = NULL;
return PTR_ERR(client->msgr);
}
client->msgr->nocrc = ceph_test_opt(client, NOCRC);
}
/* open session, and wait for mon and osd maps */
err = ceph_monc_open_session(&client->monc);
if (err < 0)
return err;
while (!have_mon_and_osd_map(client)) {
err = -EIO;
if (timeout && time_after_eq(jiffies, started + timeout))
return err;
/* wait */
dout("mount waiting for mon_map\n");
err = wait_event_interruptible_timeout(client->auth_wq,
have_mon_and_osd_map(client) || (client->auth_err < 0),
timeout);
if (err == -EINTR || err == -ERESTARTSYS)
return err;
if (client->auth_err < 0)
return client->auth_err;
}
return 0;
}
EXPORT_SYMBOL(__ceph_open_session);
int ceph_open_session(struct ceph_client *client)
{
int ret;
unsigned long started = jiffies; /* note the start time */
dout("open_session start\n");
mutex_lock(&client->mount_mutex);
ret = __ceph_open_session(client, started);
mutex_unlock(&client->mount_mutex);
return ret;
}
EXPORT_SYMBOL(ceph_open_session);
static int __init init_ceph_lib(void)
{
int ret = 0;
ret = ceph_debugfs_init();
if (ret < 0)
goto out;
ret = ceph_msgr_init();
if (ret < 0)
goto out_debugfs;
pr_info("loaded (mon/osd proto %d/%d, osdmap %d/%d %d/%d)\n",
CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL,
CEPH_OSDMAP_VERSION, CEPH_OSDMAP_VERSION_EXT,
CEPH_OSDMAP_INC_VERSION, CEPH_OSDMAP_INC_VERSION_EXT);
return 0;
out_debugfs:
ceph_debugfs_cleanup();
out:
return ret;
}
static void __exit exit_ceph_lib(void)
{
dout("exit_ceph_lib\n");
ceph_msgr_exit();
ceph_debugfs_cleanup();
}
module_init(init_ceph_lib);
module_exit(exit_ceph_lib);
MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
MODULE_DESCRIPTION("Ceph filesystem for Linux");
MODULE_LICENSE("GPL");

5
fs/ceph/ceph_fs.c → net/ceph/ceph_fs.c
View File

@ -1,7 +1,8 @@
/*
* Some non-inline ceph helpers
*/
#include "types.h"
#include <linux/module.h>
#include <linux/ceph/types.h>
/*
* return true if @layout appears to be valid
@ -52,6 +53,7 @@ int ceph_flags_to_mode(int flags)
return mode;
}
EXPORT_SYMBOL(ceph_flags_to_mode);
int ceph_caps_for_mode(int mode)
{
@ -70,3 +72,4 @@ int ceph_caps_for_mode(int mode)
return caps;
}
EXPORT_SYMBOL(ceph_caps_for_mode);

2
fs/ceph/ceph_hash.c → net/ceph/ceph_hash.c
View File

@ -1,5 +1,5 @@
#include "types.h"
#include <linux/ceph/types.h>
/*
* Robert Jenkin's hash function.

84
net/ceph/ceph_strings.c Normal file
View File

@ -0,0 +1,84 @@
/*
* Ceph string constants
*/
#include <linux/module.h>
#include <linux/ceph/types.h>
const char *ceph_entity_type_name(int type)
{
switch (type) {
case CEPH_ENTITY_TYPE_MDS: return "mds";
case CEPH_ENTITY_TYPE_OSD: return "osd";
case CEPH_ENTITY_TYPE_MON: return "mon";
case CEPH_ENTITY_TYPE_CLIENT: return "client";
case CEPH_ENTITY_TYPE_AUTH: return "auth";
default: return "unknown";
}
}
const char *ceph_osd_op_name(int op)
{
switch (op) {
case CEPH_OSD_OP_READ: return "read";
case CEPH_OSD_OP_STAT: return "stat";
case CEPH_OSD_OP_MASKTRUNC: return "masktrunc";
case CEPH_OSD_OP_WRITE: return "write";
case CEPH_OSD_OP_DELETE: return "delete";
case CEPH_OSD_OP_TRUNCATE: return "truncate";
case CEPH_OSD_OP_ZERO: return "zero";
case CEPH_OSD_OP_WRITEFULL: return "writefull";
case CEPH_OSD_OP_ROLLBACK: return "rollback";
case CEPH_OSD_OP_APPEND: return "append";
case CEPH_OSD_OP_STARTSYNC: return "startsync";
case CEPH_OSD_OP_SETTRUNC: return "settrunc";
case CEPH_OSD_OP_TRIMTRUNC: return "trimtrunc";
case CEPH_OSD_OP_TMAPUP: return "tmapup";
case CEPH_OSD_OP_TMAPGET: return "tmapget";
case CEPH_OSD_OP_TMAPPUT: return "tmapput";
case CEPH_OSD_OP_GETXATTR: return "getxattr";
case CEPH_OSD_OP_GETXATTRS: return "getxattrs";
case CEPH_OSD_OP_SETXATTR: return "setxattr";
case CEPH_OSD_OP_SETXATTRS: return "setxattrs";
case CEPH_OSD_OP_RESETXATTRS: return "resetxattrs";
case CEPH_OSD_OP_RMXATTR: return "rmxattr";
case CEPH_OSD_OP_CMPXATTR: return "cmpxattr";
case CEPH_OSD_OP_PULL: return "pull";
case CEPH_OSD_OP_PUSH: return "push";
case CEPH_OSD_OP_BALANCEREADS: return "balance-reads";
case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads";
case CEPH_OSD_OP_SCRUB: return "scrub";
case CEPH_OSD_OP_WRLOCK: return "wrlock";
case CEPH_OSD_OP_WRUNLOCK: return "wrunlock";
case CEPH_OSD_OP_RDLOCK: return "rdlock";
case CEPH_OSD_OP_RDUNLOCK: return "rdunlock";
case CEPH_OSD_OP_UPLOCK: return "uplock";
case CEPH_OSD_OP_DNLOCK: return "dnlock";
case CEPH_OSD_OP_CALL: return "call";
case CEPH_OSD_OP_PGLS: return "pgls";
}
return "???";
}
const char *ceph_pool_op_name(int op)
{
switch (op) {
case POOL_OP_CREATE: return "create";
case POOL_OP_DELETE: return "delete";
case POOL_OP_AUID_CHANGE: return "auid change";
case POOL_OP_CREATE_SNAP: return "create snap";
case POOL_OP_DELETE_SNAP: return "delete snap";
case POOL_OP_CREATE_UNMANAGED_SNAP: return "create unmanaged snap";
case POOL_OP_DELETE_UNMANAGED_SNAP: return "delete unmanaged snap";
}
return "???";
}

2
fs/ceph/crush/crush.c → net/ceph/crush/crush.c
View File

@ -8,7 +8,7 @@
# define BUG_ON(x) assert(!(x))
#endif
#include "crush.h"
#include <linux/crush/crush.h>
const char *crush_bucket_alg_name(int alg)
{

2
fs/ceph/crush/hash.c → net/ceph/crush/hash.c
View File

@ -1,6 +1,6 @@
#include <linux/types.h>
#include "hash.h"
#include <linux/crush/hash.h>
/*
* Robert Jenkins' function for mixing 32-bit values

4
fs/ceph/crush/mapper.c → net/ceph/crush/mapper.c
View File

@ -18,8 +18,8 @@
# define kfree(x) free(x)
#endif
#include "crush.h"
#include "hash.h"
#include <linux/crush/crush.h>
#include <linux/crush/hash.h>
/*
* Implement the core CRUSH mapping algorithm.

4
fs/ceph/crypto.c → net/ceph/crypto.c
View File

@ -1,13 +1,13 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/err.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <crypto/hash.h>
#include <linux/ceph/decode.h>
#include "crypto.h"
#include "decode.h"
int ceph_crypto_key_encode(struct ceph_crypto_key *key, void **p, void *end)
{

4
fs/ceph/crypto.h → net/ceph/crypto.h
View File

@ -1,8 +1,8 @@
#ifndef _FS_CEPH_CRYPTO_H
#define _FS_CEPH_CRYPTO_H
#include "types.h"
#include "buffer.h"
#include <linux/ceph/types.h>
#include <linux/ceph/buffer.h>
/*
* cryptographic secret

268
net/ceph/debugfs.c Normal file
View File

@ -0,0 +1,268 @@
#include <linux/ceph/ceph_debug.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/debugfs.h>
#ifdef CONFIG_DEBUG_FS
/*
* Implement /sys/kernel/debug/ceph fun
*
* /sys/kernel/debug/ceph/client* - an instance of the ceph client
* .../osdmap - current osdmap
* .../monmap - current monmap
* .../osdc - active osd requests
* .../monc - mon client state
* .../dentry_lru - dump contents of dentry lru
* .../caps - expose cap (reservation) stats
* .../bdi - symlink to ../../bdi/something
*/
static struct dentry *ceph_debugfs_dir;
static int monmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
if (client->monc.monmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
for (i = 0; i < client->monc.monmap->num_mon; i++) {
struct ceph_entity_inst *inst =
&client->monc.monmap->mon_inst[i];
seq_printf(s, "\t%s%lld\t%s\n",
ENTITY_NAME(inst->name),
ceph_pr_addr(&inst->addr.in_addr));
}
return 0;
}
static int osdmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
struct rb_node *n;
if (client->osdc.osdmap == NULL)
return 0;
seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
seq_printf(s, "flags%s%s\n",
(client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
" NEARFULL" : "",
(client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
" FULL" : "");
for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
struct ceph_pg_pool_info *pool =
rb_entry(n, struct ceph_pg_pool_info, node);
seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
pool->id, pool->v.pg_num, pool->pg_num_mask,
pool->v.lpg_num, pool->lpg_num_mask);
}
for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
struct ceph_entity_addr *addr =
&client->osdc.osdmap->osd_addr[i];
int state = client->osdc.osdmap->osd_state[i];
char sb[64];
seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
i, ceph_pr_addr(&addr->in_addr),
((client->osdc.osdmap->osd_weight[i]*100) >> 16),
ceph_osdmap_state_str(sb, sizeof(sb), state));
}
return 0;
}
static int monc_show(struct seq_file *s, void *p)
{
struct ceph_client *client = s->private;
struct ceph_mon_generic_request *req;
struct ceph_mon_client *monc = &client->monc;
struct rb_node *rp;
mutex_lock(&monc->mutex);
if (monc->have_mdsmap)
seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
if (monc->have_osdmap)
seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
if (monc->want_next_osdmap)
seq_printf(s, "want next osdmap\n");
for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
__u16 op;
req = rb_entry(rp, struct ceph_mon_generic_request, node);
op = le16_to_cpu(req->request->hdr.type);
if (op == CEPH_MSG_STATFS)
seq_printf(s, "%lld statfs\n", req->tid);
else
seq_printf(s, "%lld unknown\n", req->tid);
}
mutex_unlock(&monc->mutex);
return 0;
}
static int osdc_show(struct seq_file *s, void *pp)
{
struct ceph_client *client = s->private;
struct ceph_osd_client *osdc = &client->osdc;
struct rb_node *p;
mutex_lock(&osdc->request_mutex);
for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
struct ceph_osd_request *req;
struct ceph_osd_request_head *head;
struct ceph_osd_op *op;
int num_ops;
int opcode, olen;
int i;
req = rb_entry(p, struct ceph_osd_request, r_node);
seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1,
le32_to_cpu(req->r_pgid.pool),
le16_to_cpu(req->r_pgid.ps));
head = req->r_request->front.iov_base;
op = (void *)(head + 1);
num_ops = le16_to_cpu(head->num_ops);
olen = le32_to_cpu(head->object_len);
seq_printf(s, "%.*s", olen,
(const char *)(head->ops + num_ops));
if (req->r_reassert_version.epoch)
seq_printf(s, "\t%u'%llu",
(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
le64_to_cpu(req->r_reassert_version.version));
else
seq_printf(s, "\t");
for (i = 0; i < num_ops; i++) {
opcode = le16_to_cpu(op->op);
seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
op++;
}
seq_printf(s, "\n");
}
mutex_unlock(&osdc->request_mutex);
return 0;
}
CEPH_DEFINE_SHOW_FUNC(monmap_show)
CEPH_DEFINE_SHOW_FUNC(osdmap_show)
CEPH_DEFINE_SHOW_FUNC(monc_show)
CEPH_DEFINE_SHOW_FUNC(osdc_show)
int ceph_debugfs_init(void)
{
ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
if (!ceph_debugfs_dir)
return -ENOMEM;
return 0;
}
void ceph_debugfs_cleanup(void)
{
debugfs_remove(ceph_debugfs_dir);
}
int ceph_debugfs_client_init(struct ceph_client *client)
{
int ret = -ENOMEM;
char name[80];
snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
client->monc.auth->global_id);
client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
if (!client->debugfs_dir)
goto out;
client->monc.debugfs_file = debugfs_create_file("monc",
0600,
client->debugfs_dir,
client,
&monc_show_fops);
if (!client->monc.debugfs_file)
goto out;
client->osdc.debugfs_file = debugfs_create_file("osdc",
0600,
client->debugfs_dir,
client,
&osdc_show_fops);
if (!client->osdc.debugfs_file)
goto out;
client->debugfs_monmap = debugfs_create_file("monmap",
0600,
client->debugfs_dir,
client,
&monmap_show_fops);
if (!client->debugfs_monmap)
goto out;
client->debugfs_osdmap = debugfs_create_file("osdmap",
0600,
client->debugfs_dir,
client,
&osdmap_show_fops);
if (!client->debugfs_osdmap)
goto out;
return 0;
out:
ceph_debugfs_client_cleanup(client);
return ret;
}
void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
debugfs_remove(client->debugfs_osdmap);
debugfs_remove(client->debugfs_monmap);
debugfs_remove(client->osdc.debugfs_file);
debugfs_remove(client->monc.debugfs_file);
debugfs_remove(client->debugfs_dir);
}
#else /* CONFIG_DEBUG_FS */
int ceph_debugfs_init(void)
{
return 0;
}
void ceph_debugfs_cleanup(void)
{
}
int ceph_debugfs_client_init(struct ceph_client *client,
int (*module_debugfs_init)(struct ceph_client *))
{
return 0;
}
void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
}
#endif /* CONFIG_DEBUG_FS */
EXPORT_SYMBOL(ceph_debugfs_init);
EXPORT_SYMBOL(ceph_debugfs_cleanup);

77
fs/ceph/messenger.c → net/ceph/messenger.c
View File

@ -1,4 +1,4 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/crc32c.h>
#include <linux/ctype.h>
@ -13,10 +13,10 @@
#include <linux/blkdev.h>
#include <net/tcp.h>
#include "super.h"
#include "messenger.h"
#include "decode.h"
#include "pagelist.h"
#include <linux/ceph/libceph.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/pagelist.h>
/*
* Ceph uses the messenger to exchange ceph_msg messages with other
@ -50,7 +50,7 @@ static char addr_str[MAX_ADDR_STR][MAX_ADDR_STR_LEN];
static DEFINE_SPINLOCK(addr_str_lock);
static int last_addr_str;
const char *pr_addr(const struct sockaddr_storage *ss)
const char *ceph_pr_addr(const struct sockaddr_storage *ss)
{
int i;
char *s;
@ -81,6 +81,7 @@ const char *pr_addr(const struct sockaddr_storage *ss)
return s;
}
EXPORT_SYMBOL(ceph_pr_addr);
static void encode_my_addr(struct ceph_messenger *msgr)
{
@ -93,7 +94,7 @@ static void encode_my_addr(struct ceph_messenger *msgr)
*/
struct workqueue_struct *ceph_msgr_wq;
int __init ceph_msgr_init(void)
int ceph_msgr_init(void)
{
ceph_msgr_wq = create_workqueue("ceph-msgr");
if (IS_ERR(ceph_msgr_wq)) {
@ -104,16 +105,19 @@ int __init ceph_msgr_init(void)
}
return 0;
}
EXPORT_SYMBOL(ceph_msgr_init);
void ceph_msgr_exit(void)
{
destroy_workqueue(ceph_msgr_wq);
}
EXPORT_SYMBOL(ceph_msgr_exit);
void ceph_msgr_flush(void)
{
flush_workqueue(ceph_msgr_wq);
}
EXPORT_SYMBOL(ceph_msgr_flush);
/*
@ -223,19 +227,19 @@ static struct socket *ceph_tcp_connect(struct ceph_connection *con)
set_sock_callbacks(sock, con);
dout("connect %s\n", pr_addr(&con->peer_addr.in_addr));
dout("connect %s\n", ceph_pr_addr(&con->peer_addr.in_addr));
ret = sock->ops->connect(sock, (struct sockaddr *)paddr, sizeof(*paddr),
O_NONBLOCK);
if (ret == -EINPROGRESS) {
dout("connect %s EINPROGRESS sk_state = %u\n",
pr_addr(&con->peer_addr.in_addr),
ceph_pr_addr(&con->peer_addr.in_addr),
sock->sk->sk_state);
ret = 0;
}
if (ret < 0) {
pr_err("connect %s error %d\n",
pr_addr(&con->peer_addr.in_addr), ret);
ceph_pr_addr(&con->peer_addr.in_addr), ret);
sock_release(sock);
con->sock = NULL;
con->error_msg = "connect error";
@ -336,7 +340,8 @@ static void reset_connection(struct ceph_connection *con)
*/
void ceph_con_close(struct ceph_connection *con)
{
dout("con_close %p peer %s\n", con, pr_addr(&con->peer_addr.in_addr));
dout("con_close %p peer %s\n", con,
ceph_pr_addr(&con->peer_addr.in_addr));
set_bit(CLOSED, &con->state); /* in case there's queued work */
clear_bit(STANDBY, &con->state); /* avoid connect_seq bump */
clear_bit(LOSSYTX, &con->state); /* so we retry next connect */
@ -349,19 +354,21 @@ void ceph_con_close(struct ceph_connection *con)
mutex_unlock(&con->mutex);
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_close);
/*
* Reopen a closed connection, with a new peer address.
*/
void ceph_con_open(struct ceph_connection *con, struct ceph_entity_addr *addr)
{
dout("con_open %p %s\n", con, pr_addr(&addr->in_addr));
dout("con_open %p %s\n", con, ceph_pr_addr(&addr->in_addr));
set_bit(OPENING, &con->state);
clear_bit(CLOSED, &con->state);
memcpy(&con->peer_addr, addr, sizeof(*addr));
con->delay = 0; /* reset backoff memory */
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_open);
/*
* return true if this connection ever successfully opened
@ -408,6 +415,7 @@ void ceph_con_init(struct ceph_messenger *msgr, struct ceph_connection *con)
INIT_LIST_HEAD(&con->out_sent);
INIT_DELAYED_WORK(&con->work, con_work);
}
EXPORT_SYMBOL(ceph_con_init);
/*
@ -652,7 +660,7 @@ static void prepare_write_connect(struct ceph_messenger *msgr,
dout("prepare_write_connect %p cseq=%d gseq=%d proto=%d\n", con,
con->connect_seq, global_seq, proto);
con->out_connect.features = cpu_to_le64(CEPH_FEATURE_SUPPORTED);
con->out_connect.features = cpu_to_le64(msgr->supported_features);
con->out_connect.host_type = cpu_to_le32(CEPH_ENTITY_TYPE_CLIENT);
con->out_connect.connect_seq = cpu_to_le32(con->connect_seq);
con->out_connect.global_seq = cpu_to_le32(global_seq);
@ -1013,7 +1021,7 @@ static int verify_hello(struct ceph_connection *con)
{
if (memcmp(con->in_banner, CEPH_BANNER, strlen(CEPH_BANNER))) {
pr_err("connect to %s got bad banner\n",
pr_addr(&con->peer_addr.in_addr));
ceph_pr_addr(&con->peer_addr.in_addr));
con->error_msg = "protocol error, bad banner";
return -1;
}
@ -1116,7 +1124,7 @@ int ceph_parse_ips(const char *c, const char *end,
addr_set_port(ss, port);
dout("parse_ips got %s\n", pr_addr(ss));
dout("parse_ips got %s\n", ceph_pr_addr(ss));
if (p == end)
break;
@ -1136,6 +1144,7 @@ int ceph_parse_ips(const char *c, const char *end,
pr_err("parse_ips bad ip '%.*s'\n", (int)(end - c), c);
return -EINVAL;
}
EXPORT_SYMBOL(ceph_parse_ips);
static int process_banner(struct ceph_connection *con)
{
@ -1157,9 +1166,9 @@ static int process_banner(struct ceph_connection *con)
!(addr_is_blank(&con->actual_peer_addr.in_addr) &&
con->actual_peer_addr.nonce == con->peer_addr.nonce)) {
pr_warning("wrong peer, want %s/%d, got %s/%d\n",
pr_addr(&con->peer_addr.in_addr),
ceph_pr_addr(&con->peer_addr.in_addr),
(int)le32_to_cpu(con->peer_addr.nonce),
pr_addr(&con->actual_peer_addr.in_addr),
ceph_pr_addr(&con->actual_peer_addr.in_addr),
(int)le32_to_cpu(con->actual_peer_addr.nonce));
con->error_msg = "wrong peer at address";
return -1;
@ -1177,7 +1186,7 @@ static int process_banner(struct ceph_connection *con)
addr_set_port(&con->msgr->inst.addr.in_addr, port);
encode_my_addr(con->msgr);
dout("process_banner learned my addr is %s\n",
pr_addr(&con->msgr->inst.addr.in_addr));
ceph_pr_addr(&con->msgr->inst.addr.in_addr));
}
set_bit(NEGOTIATING, &con->state);
@ -1198,8 +1207,8 @@ static void fail_protocol(struct ceph_connection *con)
static int process_connect(struct ceph_connection *con)
{
u64 sup_feat = CEPH_FEATURE_SUPPORTED;
u64 req_feat = CEPH_FEATURE_REQUIRED;
u64 sup_feat = con->msgr->supported_features;
u64 req_feat = con->msgr->required_features;
u64 server_feat = le64_to_cpu(con->in_reply.features);
dout("process_connect on %p tag %d\n", con, (int)con->in_tag);
@ -1209,7 +1218,7 @@ static int process_connect(struct ceph_connection *con)
pr_err("%s%lld %s feature set mismatch,"
" my %llx < server's %llx, missing %llx\n",
ENTITY_NAME(con->peer_name),
pr_addr(&con->peer_addr.in_addr),
ceph_pr_addr(&con->peer_addr.in_addr),
sup_feat, server_feat, server_feat & ~sup_feat);
con->error_msg = "missing required protocol features";
fail_protocol(con);
@ -1219,7 +1228,7 @@ static int process_connect(struct ceph_connection *con)
pr_err("%s%lld %s protocol version mismatch,"
" my %d != server's %d\n",
ENTITY_NAME(con->peer_name),
pr_addr(&con->peer_addr.in_addr),
ceph_pr_addr(&con->peer_addr.in_addr),
le32_to_cpu(con->out_connect.protocol_version),
le32_to_cpu(con->in_reply.protocol_version));
con->error_msg = "protocol version mismatch";
@ -1253,7 +1262,7 @@ static int process_connect(struct ceph_connection *con)
le32_to_cpu(con->in_connect.connect_seq));
pr_err("%s%lld %s connection reset\n",
ENTITY_NAME(con->peer_name),
pr_addr(&con->peer_addr.in_addr));
ceph_pr_addr(&con->peer_addr.in_addr));
reset_connection(con);
prepare_write_connect(con->msgr, con, 0);
prepare_read_connect(con);
@ -1298,7 +1307,7 @@ static int process_connect(struct ceph_connection *con)
pr_err("%s%lld %s protocol feature mismatch,"
" my required %llx > server's %llx, need %llx\n",
ENTITY_NAME(con->peer_name),
pr_addr(&con->peer_addr.in_addr),
ceph_pr_addr(&con->peer_addr.in_addr),
req_feat, server_feat, req_feat & ~server_feat);
con->error_msg = "missing required protocol features";
fail_protocol(con);
@ -1525,7 +1534,7 @@ static int read_partial_message(struct ceph_connection *con)
if ((s64)seq - (s64)con->in_seq < 1) {
pr_info("skipping %s%lld %s seq %lld, expected %lld\n",
ENTITY_NAME(con->peer_name),
pr_addr(&con->peer_addr.in_addr),
ceph_pr_addr(&con->peer_addr.in_addr),
seq, con->in_seq + 1);
con->in_base_pos = -front_len - middle_len - data_len -
sizeof(m->footer);
@ -2023,9 +2032,9 @@ static void con_work(struct work_struct *work)
static void ceph_fault(struct ceph_connection *con)
{
pr_err("%s%lld %s %s\n", ENTITY_NAME(con->peer_name),
pr_addr(&con->peer_addr.in_addr), con->error_msg);
ceph_pr_addr(&con->peer_addr.in_addr), con->error_msg);
dout("fault %p state %lu to peer %s\n",
con, con->state, pr_addr(&con->peer_addr.in_addr));
con, con->state, ceph_pr_addr(&con->peer_addr.in_addr));
if (test_bit(LOSSYTX, &con->state)) {
dout("fault on LOSSYTX channel\n");
@ -2085,7 +2094,9 @@ static void ceph_fault(struct ceph_connection *con)
/*
* create a new messenger instance
*/
struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr)
struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr,
u32 supported_features,
u32 required_features)
{
struct ceph_messenger *msgr;
@ -2093,6 +2104,9 @@ struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr)
if (msgr == NULL)
return ERR_PTR(-ENOMEM);
msgr->supported_features = supported_features;
msgr->required_features = required_features;
spin_lock_init(&msgr->global_seq_lock);
/* the zero page is needed if a request is "canceled" while the message
@ -2115,6 +2129,7 @@ struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr)
dout("messenger_create %p\n", msgr);
return msgr;
}
EXPORT_SYMBOL(ceph_messenger_create);
void ceph_messenger_destroy(struct ceph_messenger *msgr)
{
@ -2124,6 +2139,7 @@ void ceph_messenger_destroy(struct ceph_messenger *msgr)
kfree(msgr);
dout("destroyed messenger %p\n", msgr);
}
EXPORT_SYMBOL(ceph_messenger_destroy);
/*
* Queue up an outgoing message on the given connection.
@ -2160,6 +2176,7 @@ void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg)
if (test_and_set_bit(WRITE_PENDING, &con->state) == 0)
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_send);
/*
* Revoke a message that was previously queued for send
@ -2225,6 +2242,7 @@ void ceph_con_keepalive(struct ceph_connection *con)
test_and_set_bit(WRITE_PENDING, &con->state) == 0)
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_keepalive);
/*
@ -2299,6 +2317,7 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags)
pr_err("msg_new can't create type %d front %d\n", type, front_len);
return NULL;
}
EXPORT_SYMBOL(ceph_msg_new);
/*
* Allocate "middle" portion of a message, if it is needed and wasn't
@ -2410,6 +2429,7 @@ void ceph_msg_last_put(struct kref *kref)
else
ceph_msg_kfree(m);
}
EXPORT_SYMBOL(ceph_msg_last_put);
void ceph_msg_dump(struct ceph_msg *msg)
{
@ -2430,3 +2450,4 @@ void ceph_msg_dump(struct ceph_msg *msg)
DUMP_PREFIX_OFFSET, 16, 1,
&msg->footer, sizeof(msg->footer), true);
}
EXPORT_SYMBOL(ceph_msg_dump);

73
fs/ceph/mon_client.c → net/ceph/mon_client.c
View File

@ -1,14 +1,16 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/sched.h>
#include "mon_client.h"
#include "super.h"
#include "auth.h"
#include "decode.h"
#include <linux/ceph/mon_client.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/auth.h>
/*
* Interact with Ceph monitor cluster. Handle requests for new map
@ -74,7 +76,7 @@ struct ceph_monmap *ceph_monmap_decode(void *p, void *end)
m->num_mon);
for (i = 0; i < m->num_mon; i++)
dout("monmap_decode mon%d is %s\n", i,
pr_addr(&m->mon_inst[i].addr.in_addr));
ceph_pr_addr(&m->mon_inst[i].addr.in_addr));
return m;
bad:
@ -191,30 +193,33 @@ static void __send_subscribe(struct ceph_mon_client *monc)
struct ceph_msg *msg = monc->m_subscribe;
struct ceph_mon_subscribe_item *i;
void *p, *end;
int num;
p = msg->front.iov_base;
end = p + msg->front_max;
dout("__send_subscribe to 'mdsmap' %u+\n",
(unsigned)monc->have_mdsmap);
num = 1 + !!monc->want_next_osdmap + !!monc->want_mdsmap;
ceph_encode_32(&p, num);
if (monc->want_next_osdmap) {
dout("__send_subscribe to 'osdmap' %u\n",
(unsigned)monc->have_osdmap);
ceph_encode_32(&p, 3);
ceph_encode_string(&p, end, "osdmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_osdmap);
i->onetime = 1;
p += sizeof(*i);
monc->want_next_osdmap = 2; /* requested */
} else {
ceph_encode_32(&p, 2);
}
ceph_encode_string(&p, end, "mdsmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_mdsmap);
i->onetime = 0;
p += sizeof(*i);
if (monc->want_mdsmap) {
dout("__send_subscribe to 'mdsmap' %u+\n",
(unsigned)monc->have_mdsmap);
ceph_encode_string(&p, end, "mdsmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_mdsmap);
i->onetime = 0;
p += sizeof(*i);
}
ceph_encode_string(&p, end, "monmap", 6);
i = p;
i->have = 0;
@ -243,7 +248,8 @@ static void handle_subscribe_ack(struct ceph_mon_client *monc,
mutex_lock(&monc->mutex);
if (monc->hunting) {
pr_info("mon%d %s session established\n",
monc->cur_mon, pr_addr(&monc->con->peer_addr.in_addr));
monc->cur_mon,
ceph_pr_addr(&monc->con->peer_addr.in_addr));
monc->hunting = false;
}
dout("handle_subscribe_ack after %d seconds\n", seconds);
@ -266,6 +272,7 @@ int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 got)
mutex_unlock(&monc->mutex);
return 0;
}
EXPORT_SYMBOL(ceph_monc_got_mdsmap);
int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 got)
{
@ -310,6 +317,7 @@ int ceph_monc_open_session(struct ceph_mon_client *monc)
mutex_unlock(&monc->mutex);
return 0;
}
EXPORT_SYMBOL(ceph_monc_open_session);
/*
* The monitor responds with mount ack indicate mount success. The
@ -540,6 +548,7 @@ int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf)
kref_put(&req->kref, release_generic_request);
return err;
}
EXPORT_SYMBOL(ceph_monc_do_statfs);
/*
* pool ops
@ -651,6 +660,7 @@ int ceph_monc_create_snapid(struct ceph_mon_client *monc,
pool, 0, (char *)snapid, sizeof(*snapid));
}
EXPORT_SYMBOL(ceph_monc_create_snapid);
int ceph_monc_delete_snapid(struct ceph_mon_client *monc,
u32 pool, u64 snapid)
@ -708,9 +718,9 @@ static void delayed_work(struct work_struct *work)
*/
static int build_initial_monmap(struct ceph_mon_client *monc)
{
struct ceph_mount_args *args = monc->client->mount_args;
struct ceph_entity_addr *mon_addr = args->mon_addr;
int num_mon = args->num_mon;
struct ceph_options *opt = monc->client->options;
struct ceph_entity_addr *mon_addr = opt->mon_addr;
int num_mon = opt->num_mon;
int i;
/* build initial monmap */
@ -728,11 +738,6 @@ static int build_initial_monmap(struct ceph_mon_client *monc)
}
monc->monmap->num_mon = num_mon;
monc->have_fsid = false;
/* release addr memory */
kfree(args->mon_addr);
args->mon_addr = NULL;
args->num_mon = 0;
return 0;
}
@ -753,8 +758,8 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
monc->con = NULL;
/* authentication */
monc->auth = ceph_auth_init(cl->mount_args->name,
cl->mount_args->secret);
monc->auth = ceph_auth_init(cl->options->name,
cl->options->secret);
if (IS_ERR(monc->auth))
return PTR_ERR(monc->auth);
monc->auth->want_keys =
@ -808,6 +813,7 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
out:
return err;
}
EXPORT_SYMBOL(ceph_monc_init);
void ceph_monc_stop(struct ceph_mon_client *monc)
{
@ -832,6 +838,7 @@ void ceph_monc_stop(struct ceph_mon_client *monc)
kfree(monc->monmap);
}
EXPORT_SYMBOL(ceph_monc_stop);
static void handle_auth_reply(struct ceph_mon_client *monc,
struct ceph_msg *msg)
@ -889,6 +896,7 @@ int ceph_monc_validate_auth(struct ceph_mon_client *monc)
mutex_unlock(&monc->mutex);
return ret;
}
EXPORT_SYMBOL(ceph_monc_validate_auth);
/*
* handle incoming message
@ -922,15 +930,16 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
ceph_monc_handle_map(monc, msg);
break;
case CEPH_MSG_MDS_MAP:
ceph_mdsc_handle_map(&monc->client->mdsc, msg);
break;
case CEPH_MSG_OSD_MAP:
ceph_osdc_handle_map(&monc->client->osdc, msg);
break;
default:
/* can the chained handler handle it? */
if (monc->client->extra_mon_dispatch &&
monc->client->extra_mon_dispatch(monc->client, msg) == 0)
break;
pr_err("received unknown message type %d %s\n", type,
ceph_msg_type_name(type));
}
@ -994,7 +1003,7 @@ static void mon_fault(struct ceph_connection *con)
if (monc->con && !monc->hunting)
pr_info("mon%d %s session lost, "
"hunting for new mon\n", monc->cur_mon,
pr_addr(&monc->con->peer_addr.in_addr));
ceph_pr_addr(&monc->con->peer_addr.in_addr));
__close_session(monc);
if (!monc->hunting) {

4
fs/ceph/msgpool.c → net/ceph/msgpool.c
View File

@ -1,11 +1,11 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/vmalloc.h>
#include "msgpool.h"
#include <linux/ceph/msgpool.h>
static void *alloc_fn(gfp_t gfp_mask, void *arg)
{

54
fs/ceph/osd_client.c → net/ceph/osd_client.c
View File

@ -1,5 +1,6 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/highmem.h>
#include <linux/mm.h>
@ -10,12 +11,12 @@
#include <linux/bio.h>
#endif
#include "super.h"
#include "osd_client.h"
#include "messenger.h"
#include "decode.h"
#include "auth.h"
#include "pagelist.h"
#include <linux/ceph/libceph.h>
#include <linux/ceph/osd_client.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/pagelist.h>
#define OSD_OP_FRONT_LEN 4096
#define OSD_OPREPLY_FRONT_LEN 512
@ -70,11 +71,14 @@ void ceph_calc_raw_layout(struct ceph_osd_client *osdc,
op->extent.length = objlen;
}
req->r_num_pages = calc_pages_for(off, *plen);
if (op->op == CEPH_OSD_OP_WRITE)
op->payload_len = *plen;
dout("calc_layout bno=%llx %llu~%llu (%d pages)\n",
*bno, objoff, objlen, req->r_num_pages);
}
EXPORT_SYMBOL(ceph_calc_raw_layout);
/*
* Implement client access to distributed object storage cluster.
@ -154,19 +158,7 @@ void ceph_osdc_release_request(struct kref *kref)
else
kfree(req);
}
static int op_needs_trail(int op)
{
switch (op) {
case CEPH_OSD_OP_GETXATTR:
case CEPH_OSD_OP_SETXATTR:
case CEPH_OSD_OP_CMPXATTR:
case CEPH_OSD_OP_CALL:
return 1;
default:
return 0;
}
}
EXPORT_SYMBOL(ceph_osdc_release_request);
static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail)
{
@ -268,6 +260,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
return req;
}
EXPORT_SYMBOL(ceph_osdc_alloc_request);
static void osd_req_encode_op(struct ceph_osd_request *req,
struct ceph_osd_op *dst,
@ -403,6 +396,7 @@ void ceph_osdc_build_request(struct ceph_osd_request *req,
msg->hdr.front_len = cpu_to_le32(msg_size);
return;
}
EXPORT_SYMBOL(ceph_osdc_build_request);
/*
* build new request AND message, calculate layout, and adjust file
@ -460,6 +454,7 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
return req;
}
EXPORT_SYMBOL(ceph_osdc_new_request);
/*
* We keep osd requests in an rbtree, sorted by ->r_tid.
@ -614,7 +609,7 @@ static void __move_osd_to_lru(struct ceph_osd_client *osdc,
dout("__move_osd_to_lru %p\n", osd);
BUG_ON(!list_empty(&osd->o_osd_lru));
list_add_tail(&osd->o_osd_lru, &osdc->osd_lru);
osd->lru_ttl = jiffies + osdc->client->mount_args->osd_idle_ttl * HZ;
osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ;
}
static void __remove_osd_from_lru(struct ceph_osd *osd)
@ -708,7 +703,7 @@ static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o)
static void __schedule_osd_timeout(struct ceph_osd_client *osdc)
{
schedule_delayed_work(&osdc->timeout_work,
osdc->client->mount_args->osd_keepalive_timeout * HZ);
osdc->client->options->osd_keepalive_timeout * HZ);
}
static void __cancel_osd_timeout(struct ceph_osd_client *osdc)
@ -909,9 +904,9 @@ static void handle_timeout(struct work_struct *work)
container_of(work, struct ceph_osd_client, timeout_work.work);
struct ceph_osd_request *req, *last_req = NULL;
struct ceph_osd *osd;
unsigned long timeout = osdc->client->mount_args->osd_timeout * HZ;
unsigned long timeout = osdc->client->options->osd_timeout * HZ;
unsigned long keepalive =
osdc->client->mount_args->osd_keepalive_timeout * HZ;
osdc->client->options->osd_keepalive_timeout * HZ;
unsigned long last_stamp = 0;
struct rb_node *p;
struct list_head slow_osds;
@ -998,7 +993,7 @@ static void handle_osds_timeout(struct work_struct *work)
container_of(work, struct ceph_osd_client,
osds_timeout_work.work);
unsigned long delay =
osdc->client->mount_args->osd_idle_ttl * HZ >> 2;
osdc->client->options->osd_idle_ttl * HZ >> 2;
dout("osds timeout\n");
down_read(&osdc->map_sem);
@ -1360,6 +1355,7 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
up_read(&osdc->map_sem);
return rc;
}
EXPORT_SYMBOL(ceph_osdc_start_request);
/*
* wait for a request to complete
@ -1382,6 +1378,7 @@ int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result);
return req->r_result;
}
EXPORT_SYMBOL(ceph_osdc_wait_request);
/*
* sync - wait for all in-flight requests to flush. avoid starvation.
@ -1415,6 +1412,7 @@ void ceph_osdc_sync(struct ceph_osd_client *osdc)
mutex_unlock(&osdc->request_mutex);
dout("sync done (thru tid %llu)\n", last_tid);
}
EXPORT_SYMBOL(ceph_osdc_sync);
/*
* init, shutdown
@ -1440,7 +1438,7 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
schedule_delayed_work(&osdc->osds_timeout_work,
round_jiffies_relative(osdc->client->mount_args->osd_idle_ttl * HZ));
round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ));
err = -ENOMEM;
osdc->req_mempool = mempool_create_kmalloc_pool(10,
@ -1466,6 +1464,7 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
out:
return err;
}
EXPORT_SYMBOL(ceph_osdc_init);
void ceph_osdc_stop(struct ceph_osd_client *osdc)
{
@ -1480,6 +1479,7 @@ void ceph_osdc_stop(struct ceph_osd_client *osdc)
ceph_msgpool_destroy(&osdc->msgpool_op);
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
}
EXPORT_SYMBOL(ceph_osdc_stop);
/*
* Read some contiguous pages. If we cross a stripe boundary, shorten
@ -1517,6 +1517,7 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc,
dout("readpages result %d\n", rc);
return rc;
}
EXPORT_SYMBOL(ceph_osdc_readpages);
/*
* do a synchronous write on N pages
@ -1559,6 +1560,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
dout("writepages result %d\n", rc);
return rc;
}
EXPORT_SYMBOL(ceph_osdc_writepages);
/*
* handle incoming message

17
fs/ceph/osdmap.c → net/ceph/osdmap.c
View File

@ -1,14 +1,15 @@
#include "ceph_debug.h"
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/div64.h>
#include "super.h"
#include "osdmap.h"
#include "crush/hash.h"
#include "crush/mapper.h"
#include "decode.h"
#include <linux/ceph/libceph.h>
#include <linux/ceph/osdmap.h>
#include <linux/ceph/decode.h>
#include <linux/crush/hash.h>
#include <linux/crush/mapper.h>
char *ceph_osdmap_state_str(char *str, int len, int state)
{
@ -429,6 +430,7 @@ int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name)
}
return -ENOENT;
}
EXPORT_SYMBOL(ceph_pg_poolid_by_name);
static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi)
{
@ -979,6 +981,7 @@ void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
dout(" obj extent %llu~%llu\n", *oxoff, *oxlen);
}
EXPORT_SYMBOL(ceph_calc_file_object_mapping);
/*
* calculate an object layout (i.e. pgid) from an oid,
@ -1024,6 +1027,7 @@ int ceph_calc_object_layout(struct ceph_object_layout *ol,
ol->ol_stripe_unit = fl->fl_object_stripe_unit;
return 0;
}
EXPORT_SYMBOL(ceph_calc_object_layout);
/*
* Calculate raw osd vector for the given pgid. Return pointer to osd
@ -1121,3 +1125,4 @@ int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid)
return osds[i];
return -1;
}
EXPORT_SYMBOL(ceph_calc_pg_primary);

6
fs/ceph/pagelist.c → net/ceph/pagelist.c
View File

@ -1,9 +1,9 @@
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/pagemap.h>
#include <linux/highmem.h>
#include "pagelist.h"
#include <linux/ceph/pagelist.h>
static void ceph_pagelist_unmap_tail(struct ceph_pagelist *pl)
{
@ -25,6 +25,7 @@ int ceph_pagelist_release(struct ceph_pagelist *pl)
}
return 0;
}
EXPORT_SYMBOL(ceph_pagelist_release);
static int ceph_pagelist_addpage(struct ceph_pagelist *pl)
{
@ -61,3 +62,4 @@ int ceph_pagelist_append(struct ceph_pagelist *pl, const void *buf, size_t len)
pl->room -= len;
return 0;
}
EXPORT_SYMBOL(ceph_pagelist_append);

223
net/ceph/pagevec.c Normal file
View File

@ -0,0 +1,223 @@
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/namei.h>
#include <linux/writeback.h>
#include <linux/ceph/libceph.h>
/*
* build a vector of user pages
*/
struct page **ceph_get_direct_page_vector(const char __user *data,
int num_pages,
loff_t off, size_t len)
{
struct page **pages;
int rc;
pages = kmalloc(sizeof(*pages) * num_pages, GFP_NOFS);
if (!pages)
return ERR_PTR(-ENOMEM);
down_read(&current->mm->mmap_sem);
rc = get_user_pages(current, current->mm, (unsigned long)data,
num_pages, 0, 0, pages, NULL);
up_read(&current->mm->mmap_sem);
if (rc < 0)
goto fail;
return pages;
fail:
kfree(pages);
return ERR_PTR(rc);
}
EXPORT_SYMBOL(ceph_get_direct_page_vector);
void ceph_put_page_vector(struct page **pages, int num_pages)
{
int i;
for (i = 0; i < num_pages; i++)
put_page(pages[i]);
kfree(pages);
}
EXPORT_SYMBOL(ceph_put_page_vector);
void ceph_release_page_vector(struct page **pages, int num_pages)
{
int i;
for (i = 0; i < num_pages; i++)
__free_pages(pages[i], 0);
kfree(pages);
}
EXPORT_SYMBOL(ceph_release_page_vector);
/*
* allocate a vector new pages
*/
struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags)
{
struct page **pages;
int i;
pages = kmalloc(sizeof(*pages) * num_pages, flags);
if (!pages)
return ERR_PTR(-ENOMEM);
for (i = 0; i < num_pages; i++) {
pages[i] = __page_cache_alloc(flags);
if (pages[i] == NULL) {
ceph_release_page_vector(pages, i);
return ERR_PTR(-ENOMEM);
}
}
return pages;
}
EXPORT_SYMBOL(ceph_alloc_page_vector);
/*
* copy user data into a page vector
*/
int ceph_copy_user_to_page_vector(struct page **pages,
const char __user *data,
loff_t off, size_t len)
{
int i = 0;
int po = off & ~PAGE_CACHE_MASK;
int left = len;
int l, bad;
while (left > 0) {
l = min_t(int, PAGE_CACHE_SIZE-po, left);
bad = copy_from_user(page_address(pages[i]) + po, data, l);
if (bad == l)
return -EFAULT;
data += l - bad;
left -= l - bad;
po += l - bad;
if (po == PAGE_CACHE_SIZE) {
po = 0;
i++;
}
}
return len;
}
EXPORT_SYMBOL(ceph_copy_user_to_page_vector);
int ceph_copy_to_page_vector(struct page **pages,
const char *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
size_t l;
while (left > 0) {
l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
memcpy(page_address(pages[i]) + po, data, l);
data += l;
left -= l;
po += l;
if (po == PAGE_CACHE_SIZE) {
po = 0;
i++;
}
}
return len;
}
EXPORT_SYMBOL(ceph_copy_to_page_vector);
int ceph_copy_from_page_vector(struct page **pages,
char *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
size_t l;
while (left > 0) {
l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
memcpy(data, page_address(pages[i]) + po, l);
data += l;
left -= l;
po += l;
if (po == PAGE_CACHE_SIZE) {
po = 0;
i++;
}
}
return len;
}
EXPORT_SYMBOL(ceph_copy_from_page_vector);
/*
* copy user data from a page vector into a user pointer
*/
int ceph_copy_page_vector_to_user(struct page **pages,
char __user *data,
loff_t off, size_t len)
{
int i = 0;
int po = off & ~PAGE_CACHE_MASK;
int left = len;
int l, bad;
while (left > 0) {
l = min_t(int, left, PAGE_CACHE_SIZE-po);
bad = copy_to_user(data, page_address(pages[i]) + po, l);
if (bad == l)
return -EFAULT;
data += l - bad;
left -= l - bad;
if (po) {
po += l - bad;
if (po == PAGE_CACHE_SIZE)
po = 0;
}
i++;
}
return len;
}
EXPORT_SYMBOL(ceph_copy_page_vector_to_user);
/*
* Zero an extent within a page vector. Offset is relative to the
* start of the first page.
*/
void ceph_zero_page_vector_range(int off, int len, struct page **pages)
{
int i = off >> PAGE_CACHE_SHIFT;
off &= ~PAGE_CACHE_MASK;
dout("zero_page_vector_page %u~%u\n", off, len);
/* leading partial page? */
if (off) {
int end = min((int)PAGE_CACHE_SIZE, off + len);
dout("zeroing %d %p head from %d\n", i, pages[i],
(int)off);
zero_user_segment(pages[i], off, end);
len -= (end - off);
i++;
}
while (len >= PAGE_CACHE_SIZE) {
dout("zeroing %d %p len=%d\n", i, pages[i], len);
zero_user_segment(pages[i], 0, PAGE_CACHE_SIZE);
len -= PAGE_CACHE_SIZE;
i++;
}
/* trailing partial page? */
if (len) {
dout("zeroing %d %p tail to %d\n", i, pages[i], (int)len);
zero_user_segment(pages[i], 0, len);
}
}
EXPORT_SYMBOL(ceph_zero_page_vector_range);