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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2

Browse Source 
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2/trivial: Wrap ocfs2_sysfile_cluster_lock_key within define.
  ocfs2: Add lockdep annotations
  vfs: Set special lockdep map for dirs only if not set by fs
  ocfs2: Disable orphan scanning for local and hard-ro mounts
  ocfs2: Do not initialize lvb in ocfs2_orphan_scan_lock_res_init()
  ocfs2: Stop orphan scan as early as possible during umount
  ocfs2: Fix ocfs2_osb_dump()
  ocfs2: Pin journal head before accessing jh->b_committed_data
  ocfs2: Update atime in splice read if necessary.
  ocfs2: Provide the ocfs2_dlm_lvb_valid() stack API.
This commit is contained in:
Linus Torvalds 2009-06-23 19:36:02 -07:00
commit cf5434e894
17 changed files with 308 additions and 110 deletions
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17
fs/inode.c
View File

@ -665,12 +665,17 @@ void unlock_new_inode(struct inode *inode)
if (inode->i_mode & S_IFDIR) {
struct file_system_type *type = inode->i_sb->s_type;
/*
* ensure nobody is actually holding i_mutex
*/
mutex_destroy(&inode->i_mutex);
mutex_init(&inode->i_mutex);
lockdep_set_class(&inode->i_mutex, &type->i_mutex_dir_key);
/* Set new key only if filesystem hasn't already changed it */
if (!lockdep_match_class(&inode->i_mutex,
&type->i_mutex_key)) {
/*
* ensure nobody is actually holding i_mutex
*/
mutex_destroy(&inode->i_mutex);
mutex_init(&inode->i_mutex);
lockdep_set_class(&inode->i_mutex,
&type->i_mutex_dir_key);
}
}
#endif
/*

123
fs/ocfs2/dlmglue.c
View File

@ -92,6 +92,9 @@ struct ocfs2_unblock_ctl {
enum ocfs2_unblock_action unblock_action;
};
/* Lockdep class keys */
struct lock_class_key lockdep_keys[OCFS2_NUM_LOCK_TYPES];
static int ocfs2_check_meta_downconvert(struct ocfs2_lock_res *lockres,
int new_level);
static void ocfs2_set_meta_lvb(struct ocfs2_lock_res *lockres);
@ -317,9 +320,16 @@ static int ocfs2_lock_create(struct ocfs2_super *osb,
u32 dlm_flags);
static inline int ocfs2_may_continue_on_blocked_lock(struct ocfs2_lock_res *lockres,
int wanted);
static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level);
static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level, unsigned long caller_ip);
static inline void ocfs2_cluster_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level)
{
__ocfs2_cluster_unlock(osb, lockres, level, _RET_IP_);
}
static inline void ocfs2_generic_handle_downconvert_action(struct ocfs2_lock_res *lockres);
static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lockres);
static inline void ocfs2_generic_handle_attach_action(struct ocfs2_lock_res *lockres);
@ -489,6 +499,13 @@ static void ocfs2_lock_res_init_common(struct ocfs2_super *osb,
ocfs2_add_lockres_tracking(res, osb->osb_dlm_debug);
ocfs2_init_lock_stats(res);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
if (type != OCFS2_LOCK_TYPE_OPEN)
lockdep_init_map(&res->l_lockdep_map, ocfs2_lock_type_strings[type],
&lockdep_keys[type], 0);
else
res->l_lockdep_map.key = NULL;
#endif
}
void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res)
@ -644,14 +661,10 @@ static void ocfs2_nfs_sync_lock_res_init(struct ocfs2_lock_res *res,
static void ocfs2_orphan_scan_lock_res_init(struct ocfs2_lock_res *res,
struct ocfs2_super *osb)
{
struct ocfs2_orphan_scan_lvb *lvb;
ocfs2_lock_res_init_once(res);
ocfs2_build_lock_name(OCFS2_LOCK_TYPE_ORPHAN_SCAN, 0, 0, res->l_name);
ocfs2_lock_res_init_common(osb, res, OCFS2_LOCK_TYPE_ORPHAN_SCAN,
&ocfs2_orphan_scan_lops, osb);
lvb = ocfs2_dlm_lvb(&res->l_lksb);
lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;
}
void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
@ -1256,11 +1269,13 @@ static int ocfs2_wait_for_mask_interruptible(struct ocfs2_mask_waiter *mw,
return ret;
}
static int ocfs2_cluster_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
u32 lkm_flags,
int arg_flags)
static int __ocfs2_cluster_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
u32 lkm_flags,
int arg_flags,
int l_subclass,
unsigned long caller_ip)
{
struct ocfs2_mask_waiter mw;
int wait, catch_signals = !(osb->s_mount_opt & OCFS2_MOUNT_NOINTR);
@ -1403,13 +1418,37 @@ static int ocfs2_cluster_lock(struct ocfs2_super *osb,
}
ocfs2_update_lock_stats(lockres, level, &mw, ret);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
if (!ret && lockres->l_lockdep_map.key != NULL) {
if (level == DLM_LOCK_PR)
rwsem_acquire_read(&lockres->l_lockdep_map, l_subclass,
!!(arg_flags & OCFS2_META_LOCK_NOQUEUE),
caller_ip);
else
rwsem_acquire(&lockres->l_lockdep_map, l_subclass,
!!(arg_flags & OCFS2_META_LOCK_NOQUEUE),
caller_ip);
}
#endif
mlog_exit(ret);
return ret;
}
static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level)
static inline int ocfs2_cluster_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
u32 lkm_flags,
int arg_flags)
{
return __ocfs2_cluster_lock(osb, lockres, level, lkm_flags, arg_flags,
0, _RET_IP_);
}
static void __ocfs2_cluster_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
unsigned long caller_ip)
{
unsigned long flags;
@ -1418,6 +1457,10 @@ static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
ocfs2_dec_holders(lockres, level);
ocfs2_downconvert_on_unlock(osb, lockres);
spin_unlock_irqrestore(&lockres->l_lock, flags);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
if (lockres->l_lockdep_map.key != NULL)
rwsem_release(&lockres->l_lockdep_map, 1, caller_ip);
#endif
mlog_exit_void();
}
@ -1989,7 +2032,8 @@ static inline int ocfs2_meta_lvb_is_trustable(struct inode *inode,
{
struct ocfs2_meta_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
if (lvb->lvb_version == OCFS2_LVB_VERSION
if (ocfs2_dlm_lvb_valid(&lockres->l_lksb)
&& lvb->lvb_version == OCFS2_LVB_VERSION
&& be32_to_cpu(lvb->lvb_igeneration) == inode->i_generation)
return 1;
return 0;
@ -2162,10 +2206,11 @@ static int ocfs2_assign_bh(struct inode *inode,
* returns < 0 error if the callback will never be called, otherwise
* the result of the lock will be communicated via the callback.
*/
int ocfs2_inode_lock_full(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
int arg_flags)
int ocfs2_inode_lock_full_nested(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
int arg_flags,
int subclass)
{
int status, level, acquired;
u32 dlm_flags;
@ -2203,7 +2248,8 @@ int ocfs2_inode_lock_full(struct inode *inode,
if (arg_flags & OCFS2_META_LOCK_NOQUEUE)
dlm_flags |= DLM_LKF_NOQUEUE;
status = ocfs2_cluster_lock(osb, lockres, level, dlm_flags, arg_flags);
status = __ocfs2_cluster_lock(osb, lockres, level, dlm_flags,
arg_flags, subclass, _RET_IP_);
if (status < 0) {
if (status != -EAGAIN && status != -EIOCBRETRY)
mlog_errno(status);
@ -2369,35 +2415,45 @@ void ocfs2_inode_unlock(struct inode *inode,
mlog_exit_void();
}
int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex)
int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno)
{
struct ocfs2_lock_res *lockres;
struct ocfs2_orphan_scan_lvb *lvb;
int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
int status = 0;
if (ocfs2_is_hard_readonly(osb))
return -EROFS;
if (ocfs2_mount_local(osb))
return 0;
lockres = &osb->osb_orphan_scan.os_lockres;
status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);
status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_EX, 0, 0);
if (status < 0)
return status;
lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
if (lvb->lvb_version == OCFS2_ORPHAN_LVB_VERSION)
if (ocfs2_dlm_lvb_valid(&lockres->l_lksb) &&
lvb->lvb_version == OCFS2_ORPHAN_LVB_VERSION)
*seqno = be32_to_cpu(lvb->lvb_os_seqno);
else
*seqno = osb->osb_orphan_scan.os_seqno + 1;
return status;
}
void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno, int ex)
void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno)
{
struct ocfs2_lock_res *lockres;
struct ocfs2_orphan_scan_lvb *lvb;
int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
lockres = &osb->osb_orphan_scan.os_lockres;
lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;
lvb->lvb_os_seqno = cpu_to_be32(seqno);
ocfs2_cluster_unlock(osb, lockres, level);
if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb)) {
lockres = &osb->osb_orphan_scan.os_lockres;
lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
lvb->lvb_version = OCFS2_ORPHAN_LVB_VERSION;
lvb->lvb_os_seqno = cpu_to_be32(seqno);
ocfs2_cluster_unlock(osb, lockres, DLM_LOCK_EX);
}
}
int ocfs2_super_lock(struct ocfs2_super *osb,
@ -3627,7 +3683,8 @@ static int ocfs2_refresh_qinfo(struct ocfs2_mem_dqinfo *oinfo)
struct ocfs2_global_disk_dqinfo *gdinfo;
int status = 0;
if (lvb->lvb_version == OCFS2_QINFO_LVB_VERSION) {
if (ocfs2_dlm_lvb_valid(&lockres->l_lksb) &&
lvb->lvb_version == OCFS2_QINFO_LVB_VERSION) {
info->dqi_bgrace = be32_to_cpu(lvb->lvb_bgrace);
info->dqi_igrace = be32_to_cpu(lvb->lvb_igrace);
oinfo->dqi_syncms = be32_to_cpu(lvb->lvb_syncms);

24
fs/ocfs2/dlmglue.h
View File

@ -78,6 +78,14 @@ struct ocfs2_orphan_scan_lvb {
/* don't block waiting for the downconvert thread, instead return -EAGAIN */
#define OCFS2_LOCK_NONBLOCK (0x04)
/* Locking subclasses of inode cluster lock */
enum {
OI_LS_NORMAL = 0,
OI_LS_PARENT,
OI_LS_RENAME1,
OI_LS_RENAME2,
};
int ocfs2_dlm_init(struct ocfs2_super *osb);
void ocfs2_dlm_shutdown(struct ocfs2_super *osb, int hangup_pending);
void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res);
@ -104,25 +112,31 @@ void ocfs2_open_unlock(struct inode *inode);
int ocfs2_inode_lock_atime(struct inode *inode,
struct vfsmount *vfsmnt,
int *level);
int ocfs2_inode_lock_full(struct inode *inode,
int ocfs2_inode_lock_full_nested(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
int arg_flags);
int arg_flags,
int subclass);
int ocfs2_inode_lock_with_page(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
struct page *page);
/* Variants without special locking class or flags */
#define ocfs2_inode_lock_full(i, r, e, f)\
ocfs2_inode_lock_full_nested(i, r, e, f, OI_LS_NORMAL)
#define ocfs2_inode_lock_nested(i, b, e, s)\
ocfs2_inode_lock_full_nested(i, b, e, 0, s)
/* 99% of the time we don't want to supply any additional flags --
* those are for very specific cases only. */
#define ocfs2_inode_lock(i, b, e) ocfs2_inode_lock_full(i, b, e, 0)
#define ocfs2_inode_lock(i, b, e) ocfs2_inode_lock_full_nested(i, b, e, 0, OI_LS_NORMAL)
void ocfs2_inode_unlock(struct inode *inode,
int ex);
int ocfs2_super_lock(struct ocfs2_super *osb,
int ex);
void ocfs2_super_unlock(struct ocfs2_super *osb,
int ex);
int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno, int ex);
void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno, int ex);
int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno);
void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno);
int ocfs2_rename_lock(struct ocfs2_super *osb);
void ocfs2_rename_unlock(struct ocfs2_super *osb);

6
fs/ocfs2/file.c
View File

@ -2026,7 +2026,7 @@ static ssize_t ocfs2_file_splice_read(struct file *in,
size_t len,
unsigned int flags)
{
int ret = 0;
int ret = 0, lock_level = 0;
struct inode *inode = in->f_path.dentry->d_inode;
mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", in, pipe,
@ -2037,12 +2037,12 @@ static ssize_t ocfs2_file_splice_read(struct file *in,
/*
* See the comment in ocfs2_file_aio_read()
*/
ret = ocfs2_inode_lock(inode, NULL, 0);
ret = ocfs2_inode_lock_atime(inode, in->f_vfsmnt, &lock_level);
if (ret < 0) {
mlog_errno(ret);
goto bail;
}
ocfs2_inode_unlock(inode, 0);
ocfs2_inode_unlock(inode, lock_level);
ret = generic_file_splice_read(in, ppos, pipe, len, flags);

11
fs/ocfs2/inode.c
View File

@ -215,6 +215,8 @@ static int ocfs2_find_actor(struct inode *inode, void *opaque)
static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
{
struct ocfs2_find_inode_args *args = opaque;
static struct lock_class_key ocfs2_quota_ip_alloc_sem_key,
ocfs2_file_ip_alloc_sem_key;
mlog_entry("inode = %p, opaque = %p\n", inode, opaque);
@ -223,6 +225,15 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
if (args->fi_sysfile_type != 0)
lockdep_set_class(&inode->i_mutex,
&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE ||
args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE ||
args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE)
lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
&ocfs2_quota_ip_alloc_sem_key);
else
lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem,
&ocfs2_file_ip_alloc_sem_key);
mlog_exit(0);
return 0;

41
fs/ocfs2/journal.c
View File

@ -1880,13 +1880,20 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
os = &osb->osb_orphan_scan;
status = ocfs2_orphan_scan_lock(osb, &seqno, DLM_LOCK_EX);
if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
goto out;
status = ocfs2_orphan_scan_lock(osb, &seqno);
if (status < 0) {
if (status != -EAGAIN)
mlog_errno(status);
goto out;
}
/* Do no queue the tasks if the volume is being umounted */
if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
goto unlock;
if (os->os_seqno != seqno) {
os->os_seqno = seqno;
goto unlock;
@ -1903,7 +1910,7 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
os->os_count++;
os->os_scantime = CURRENT_TIME;
unlock:
ocfs2_orphan_scan_unlock(osb, seqno, DLM_LOCK_EX);
ocfs2_orphan_scan_unlock(osb, seqno);
out:
return;
}
@ -1920,8 +1927,9 @@ void ocfs2_orphan_scan_work(struct work_struct *work)
mutex_lock(&os->os_lock);
ocfs2_queue_orphan_scan(osb);
schedule_delayed_work(&os->os_orphan_scan_work,
ocfs2_orphan_scan_timeout());
if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE)
schedule_delayed_work(&os->os_orphan_scan_work,
ocfs2_orphan_scan_timeout());
mutex_unlock(&os->os_lock);
}
@ -1930,26 +1938,33 @@ void ocfs2_orphan_scan_stop(struct ocfs2_super *osb)
struct ocfs2_orphan_scan *os;
os = &osb->osb_orphan_scan;
mutex_lock(&os->os_lock);
cancel_delayed_work(&os->os_orphan_scan_work);
mutex_unlock(&os->os_lock);
if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) {
atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
mutex_lock(&os->os_lock);
cancel_delayed_work(&os->os_orphan_scan_work);
mutex_unlock(&os->os_lock);
}
}
int ocfs2_orphan_scan_init(struct ocfs2_super *osb)
void ocfs2_orphan_scan_init(struct ocfs2_super *osb)
{
struct ocfs2_orphan_scan *os;
os = &osb->osb_orphan_scan;
os->os_osb = osb;
os->os_count = 0;
os->os_seqno = 0;
os->os_scantime = CURRENT_TIME;
mutex_init(&os->os_lock);
INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work);
INIT_DELAYED_WORK(&os->os_orphan_scan_work,
ocfs2_orphan_scan_work);
schedule_delayed_work(&os->os_orphan_scan_work,
ocfs2_orphan_scan_timeout());
return 0;
if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))
atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
else {
atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE);
schedule_delayed_work(&os->os_orphan_scan_work,
ocfs2_orphan_scan_timeout());
}
}
struct ocfs2_orphan_filldir_priv {

2
fs/ocfs2/journal.h
View File

@ -144,7 +144,7 @@ static inline void ocfs2_inode_set_new(struct ocfs2_super *osb,
}
/* Exported only for the journal struct init code in super.c. Do not call. */
int ocfs2_orphan_scan_init(struct ocfs2_super *osb);
void ocfs2_orphan_scan_init(struct ocfs2_super *osb);
void ocfs2_orphan_scan_stop(struct ocfs2_super *osb);
void ocfs2_orphan_scan_exit(struct ocfs2_super *osb);

15
fs/ocfs2/namei.c
View File

@ -118,7 +118,7 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
status = ocfs2_inode_lock(dir, NULL, 0);
status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@ -636,7 +636,7 @@ static int ocfs2_link(struct dentry *old_dentry,
if (S_ISDIR(inode->i_mode))
return -EPERM;
err = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT);
if (err < 0) {
if (err != -ENOENT)
mlog_errno(err);
@ -800,7 +800,8 @@ static int ocfs2_unlink(struct inode *dir,
return -EPERM;
}
status = ocfs2_inode_lock(dir, &parent_node_bh, 1);
status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
OI_LS_PARENT);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@ -978,7 +979,8 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
inode1 = tmpinode;
}
/* lock id2 */
status = ocfs2_inode_lock(inode2, bh2, 1);
status = ocfs2_inode_lock_nested(inode2, bh2, 1,
OI_LS_RENAME1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@ -987,7 +989,7 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
}
/* lock id1 */
status = ocfs2_inode_lock(inode1, bh1, 1);
status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2);
if (status < 0) {
/*
* An error return must mean that no cluster locks
@ -1103,7 +1105,8 @@ static int ocfs2_rename(struct inode *old_dir,
* won't have to concurrently downconvert the inode and the
* dentry locks.
*/
status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1);
status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
OI_LS_PARENT);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);

10
fs/ocfs2/ocfs2.h
View File

@ -34,6 +34,7 @@
#include <linux/workqueue.h>
#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/lockdep.h>
#ifndef CONFIG_OCFS2_COMPAT_JBD
# include <linux/jbd2.h>
#else
@ -152,6 +153,14 @@ struct ocfs2_lock_res {
unsigned int l_lock_max_exmode; /* Max wait for EX */
unsigned int l_lock_refresh; /* Disk refreshes */
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map l_lockdep_map;
#endif
};
enum ocfs2_orphan_scan_state {
ORPHAN_SCAN_ACTIVE,
ORPHAN_SCAN_INACTIVE
};
struct ocfs2_orphan_scan {
@ -162,6 +171,7 @@ struct ocfs2_orphan_scan {
struct timespec os_scantime; /* time this node ran the scan */
u32 os_count; /* tracks node specific scans */
u32 os_seqno; /* tracks cluster wide scans */
atomic_t os_state; /* ACTIVE or INACTIVE */
};
struct ocfs2_dlm_debug {

11
fs/ocfs2/stack_o2cb.c
View File

@ -236,6 +236,16 @@ static int o2cb_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
return dlm_status_to_errno(lksb->lksb_o2dlm.status);
}
/*
* o2dlm aways has a "valid" LVB. If the dlm loses track of the LVB
* contents, it will zero out the LVB. Thus the caller can always trust
* the contents.
*/
static int o2cb_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb)
{
return 1;
}
static void *o2cb_dlm_lvb(union ocfs2_dlm_lksb *lksb)
{
return (void *)(lksb->lksb_o2dlm.lvb);
@ -354,6 +364,7 @@ static struct ocfs2_stack_operations o2cb_stack_ops = {
.dlm_lock = o2cb_dlm_lock,
.dlm_unlock = o2cb_dlm_unlock,
.lock_status = o2cb_dlm_lock_status,
.lvb_valid = o2cb_dlm_lvb_valid,
.lock_lvb = o2cb_dlm_lvb,
.dump_lksb = o2cb_dump_lksb,
};

8
fs/ocfs2/stack_user.c
View File

@ -738,6 +738,13 @@ static int user_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
return lksb->lksb_fsdlm.sb_status;
}
static int user_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb)
{
int invalid = lksb->lksb_fsdlm.sb_flags & DLM_SBF_VALNOTVALID;
return !invalid;
}
static void *user_dlm_lvb(union ocfs2_dlm_lksb *lksb)
{
if (!lksb->lksb_fsdlm.sb_lvbptr)
@ -873,6 +880,7 @@ static struct ocfs2_stack_operations ocfs2_user_plugin_ops = {
.dlm_lock = user_dlm_lock,
.dlm_unlock = user_dlm_unlock,
.lock_status = user_dlm_lock_status,
.lvb_valid = user_dlm_lvb_valid,
.lock_lvb = user_dlm_lvb,
.plock = user_plock,
.dump_lksb = user_dlm_dump_lksb,

13
fs/ocfs2/stackglue.c
View File

@ -6,7 +6,7 @@
* Code which implements an OCFS2 specific interface to underlying
* cluster stacks.
*
* Copyright (C) 2007 Oracle. All rights reserved.
* Copyright (C) 2007, 2009 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
@ -271,11 +271,12 @@ int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lock_status);
/*
* Why don't we cast to ocfs2_meta_lvb? The "clean" answer is that we
* don't cast at the glue level. The real answer is that the header
* ordering is nigh impossible.
*/
int ocfs2_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb)
{
return active_stack->sp_ops->lvb_valid(lksb);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lvb_valid);
void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb)
{
return active_stack->sp_ops->lock_lvb(lksb);

6
fs/ocfs2/stackglue.h
View File

@ -185,6 +185,11 @@ struct ocfs2_stack_operations {
*/
int (*lock_status)(union ocfs2_dlm_lksb *lksb);
/*
* Return non-zero if the LVB is valid.
*/
int (*lvb_valid)(union ocfs2_dlm_lksb *lksb);
/*
* Pull the lvb pointer off of the stack-specific lksb.
*/
@ -252,6 +257,7 @@ int ocfs2_dlm_unlock(struct ocfs2_cluster_connection *conn,
struct ocfs2_lock_res *astarg);
int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb);
int ocfs2_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb);
void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb);
void ocfs2_dlm_dump_lksb(union ocfs2_dlm_lksb *lksb);

28
fs/ocfs2/suballoc.c
View File

@ -923,14 +923,23 @@ static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh,
int nr)
{
struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data;
int ret;
if (ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap))
return 0;
if (!buffer_jbd(bg_bh) || !bh2jh(bg_bh)->b_committed_data)
if (!buffer_jbd(bg_bh))
return 1;
jbd_lock_bh_state(bg_bh);
bg = (struct ocfs2_group_desc *) bh2jh(bg_bh)->b_committed_data;
return !ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap);
if (bg)
ret = !ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap);
else
ret = 1;
jbd_unlock_bh_state(bg_bh);
return ret;
}
static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
@ -1885,6 +1894,7 @@ static inline int ocfs2_block_group_clear_bits(handle_t *handle,
unsigned int tmp;
int journal_type = OCFS2_JOURNAL_ACCESS_WRITE;
struct ocfs2_group_desc *undo_bg = NULL;
int cluster_bitmap = 0;
mlog_entry_void();
@ -1905,18 +1915,28 @@ static inline int ocfs2_block_group_clear_bits(handle_t *handle,
}
if (ocfs2_is_cluster_bitmap(alloc_inode))
undo_bg = (struct ocfs2_group_desc *) bh2jh(group_bh)->b_committed_data;
cluster_bitmap = 1;
if (cluster_bitmap) {
jbd_lock_bh_state(group_bh);
undo_bg = (struct ocfs2_group_desc *)
bh2jh(group_bh)->b_committed_data;
BUG_ON(!undo_bg);
}
tmp = num_bits;
while(tmp--) {
ocfs2_clear_bit((bit_off + tmp),
(unsigned long *) bg->bg_bitmap);
if (ocfs2_is_cluster_bitmap(alloc_inode))
if (cluster_bitmap)
ocfs2_set_bit(bit_off + tmp,
(unsigned long *) undo_bg->bg_bitmap);
}
le16_add_cpu(&bg->bg_free_bits_count, num_bits);
if (cluster_bitmap)
jbd_unlock_bh_state(group_bh);
status = ocfs2_journal_dirty(handle, group_bh);
if (status < 0)
mlog_errno(status);

69
fs/ocfs2/super.c
View File

@ -205,11 +205,10 @@ static const match_table_t tokens = {
#ifdef CONFIG_DEBUG_FS
static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
{
int out = 0;
int i;
struct ocfs2_cluster_connection *cconn = osb->cconn;
struct ocfs2_recovery_map *rm = osb->recovery_map;
struct ocfs2_orphan_scan *os;
struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan;
int i, out = 0;
out += snprintf(buf + out, len - out,
"%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
@ -234,20 +233,24 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
"%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
osb->s_mount_opt, osb->s_atime_quantum);
out += snprintf(buf + out, len - out,
"%10s => Stack: %s Name: %*s Version: %d.%d\n",
"Cluster",
(*osb->osb_cluster_stack == '\0' ?
"o2cb" : osb->osb_cluster_stack),
cconn->cc_namelen, cconn->cc_name,
cconn->cc_version.pv_major, cconn->cc_version.pv_minor);
if (cconn) {
out += snprintf(buf + out, len - out,
"%10s => Stack: %s Name: %*s "
"Version: %d.%d\n", "Cluster",
(*osb->osb_cluster_stack == '\0' ?
"o2cb" : osb->osb_cluster_stack),
cconn->cc_namelen, cconn->cc_name,
cconn->cc_version.pv_major,
cconn->cc_version.pv_minor);
}
spin_lock(&osb->dc_task_lock);
out += snprintf(buf + out, len - out,
"%10s => Pid: %d Count: %lu WakeSeq: %lu "
"WorkSeq: %lu\n", "DownCnvt",
task_pid_nr(osb->dc_task), osb->blocked_lock_count,
osb->dc_wake_sequence, osb->dc_work_sequence);
(osb->dc_task ? task_pid_nr(osb->dc_task) : -1),
osb->blocked_lock_count, osb->dc_wake_sequence,
osb->dc_work_sequence);
spin_unlock(&osb->dc_task_lock);
spin_lock(&osb->osb_lock);
@ -267,14 +270,15 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
out += snprintf(buf + out, len - out,
"%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit",
task_pid_nr(osb->commit_task), osb->osb_commit_interval,
(osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
osb->osb_commit_interval,
atomic_read(&osb->needs_checkpoint));
out += snprintf(buf + out, len - out,
"%10s => State: %d NumTxns: %d TxnId: %lu\n",
"%10s => State: %d TxnId: %lu NumTxns: %d\n",
"Journal", osb->journal->j_state,
atomic_read(&osb->journal->j_num_trans),
osb->journal->j_trans_id);
osb->journal->j_trans_id,
atomic_read(&osb->journal->j_num_trans));
out += snprintf(buf + out, len - out,
"%10s => GlobalAllocs: %d LocalAllocs: %d "
@ -300,9 +304,18 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
atomic_read(&osb->s_num_inodes_stolen));
spin_unlock(&osb->osb_lock);
out += snprintf(buf + out, len - out, "OrphanScan => ");
out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
os->os_count, os->os_seqno);
out += snprintf(buf + out, len - out, " Last Scan: ");
if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
out += snprintf(buf + out, len - out, "Disabled\n");
else
out += snprintf(buf + out, len - out, "%lu seconds ago\n",
(get_seconds() - os->os_scantime.tv_sec));
out += snprintf(buf + out, len - out, "%10s => %3s %10s\n",
"Slots", "Num", "RecoGen");
for (i = 0; i < osb->max_slots; ++i) {
out += snprintf(buf + out, len - out,
"%10s %c %3d %10d\n",
@ -311,13 +324,6 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
i, osb->slot_recovery_generations[i]);
}
os = &osb->osb_orphan_scan;
out += snprintf(buf + out, len - out, "Orphan Scan=> ");
out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
os->os_count, os->os_seqno);
out += snprintf(buf + out, len - out, " Last Scan: %lu seconds ago\n",
(get_seconds() - os->os_scantime.tv_sec));
return out;
}
@ -1175,6 +1181,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
wake_up(&osb->osb_mount_event);
/* Start this when the mount is almost sure of being successful */
ocfs2_orphan_scan_init(osb);
mlog_exit(status);
return status;
@ -1810,14 +1819,15 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
debugfs_remove(osb->osb_ctxt);
/* Orphan scan should be stopped as early as possible */
ocfs2_orphan_scan_stop(osb);
ocfs2_disable_quotas(osb);
ocfs2_shutdown_local_alloc(osb);
ocfs2_truncate_log_shutdown(osb);
ocfs2_orphan_scan_stop(osb);
/* This will disable recovery and flush any recovery work. */
ocfs2_recovery_exit(osb);
@ -1978,13 +1988,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
goto bail;
}
status = ocfs2_orphan_scan_init(osb);
if (status) {
mlog(ML_ERROR, "Unable to initialize delayed orphan scan\n");
mlog_errno(status);
goto bail;
}
init_waitqueue_head(&osb->checkpoint_event);
atomic_set(&osb->needs_checkpoint, 0);

19
fs/ocfs2/sysfile.c
View File

@ -50,6 +50,10 @@ static inline int is_in_system_inode_array(struct ocfs2_super *osb,
int type,
u32 slot);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
static struct lock_class_key ocfs2_sysfile_cluster_lock_key[NUM_SYSTEM_INODES];
#endif
static inline int is_global_system_inode(int type)
{
return type >= OCFS2_FIRST_ONLINE_SYSTEM_INODE &&
@ -118,6 +122,21 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
inode = NULL;
goto bail;
}
#ifdef CONFIG_DEBUG_LOCK_ALLOC
if (type == LOCAL_USER_QUOTA_SYSTEM_INODE ||
type == LOCAL_GROUP_QUOTA_SYSTEM_INODE ||
type == JOURNAL_SYSTEM_INODE) {
/* Ignore inode lock on these inodes as the lock does not
* really belong to any process and lockdep cannot handle
* that */
OCFS2_I(inode)->ip_inode_lockres.l_lockdep_map.key = NULL;
} else {
lockdep_init_map(&OCFS2_I(inode)->ip_inode_lockres.
l_lockdep_map,
ocfs2_system_inodes[type].si_name,
&ocfs2_sysfile_cluster_lock_key[type], 0);
}
#endif
bail:
return inode;

15
include/linux/lockdep.h
View File

@ -258,6 +258,16 @@ extern void lockdep_init_map(struct lockdep_map *lock, const char *name,
#define lockdep_set_subclass(lock, sub) \
lockdep_init_map(&(lock)->dep_map, #lock, \
(lock)->dep_map.key, sub)
/*
* Compare locking classes
*/
#define lockdep_match_class(lock, key) lockdep_match_key(&(lock)->dep_map, key)
static inline int lockdep_match_key(struct lockdep_map *lock,
struct lock_class_key *key)
{
return lock->key == key;
}
/*
* Acquire a lock.
@ -326,6 +336,11 @@ static inline void lockdep_on(void)
#define lockdep_set_class_and_subclass(lock, key, sub) \
do { (void)(key); } while (0)
#define lockdep_set_subclass(lock, sub) do { } while (0)
/*
* We don't define lockdep_match_class() and lockdep_match_key() for !LOCKDEP
* case since the result is not well defined and the caller should rather
* #ifdef the call himself.
*/
# define INIT_LOCKDEP
# define lockdep_reset() do { debug_locks = 1; } while (0)