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[PATCH] Remove readv/writev methods and use aio_read/aio_write instead

Browse Source 
This patch removes readv() and writev() methods and replaces them with
aio_read()/aio_write() methods.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Badari Pulavarty 2006-09-30 23:28:47 -07:00 committed by Linus Torvalds
parent 027445c372
commit ee0b3e671b
21 changed files with 154 additions and 388 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/char/raw.c
View File

@ -257,8 +257,6 @@ static const struct file_operations raw_fops = {
.open = raw_open,
.release= raw_release,
.ioctl = raw_ioctl,
.readv = generic_file_readv,
.writev = generic_file_writev,
.owner = THIS_MODULE,
};

37
drivers/net/tun.c
View File

@ -288,11 +288,10 @@ static inline size_t iov_total(const struct iovec *iv, unsigned long count)
return len;
}
/* Writev */
static ssize_t tun_chr_writev(struct file * file, const struct iovec *iv,
unsigned long count, loff_t *pos)
static ssize_t tun_chr_aio_write(struct kiocb *iocb, const struct iovec *iv,
unsigned long count, loff_t pos)
{
struct tun_struct *tun = file->private_data;
struct tun_struct *tun = iocb->ki_filp->private_data;
if (!tun)
return -EBADFD;
@ -302,14 +301,6 @@ static ssize_t tun_chr_writev(struct file * file, const struct iovec *iv,
return tun_get_user(tun, (struct iovec *) iv, iov_total(iv, count));
}
/* Write */
static ssize_t tun_chr_write(struct file * file, const char __user * buf,
size_t count, loff_t *pos)
{
struct iovec iv = { (void __user *) buf, count };
return tun_chr_writev(file, &iv, 1, pos);
}
/* Put packet to the user space buffer */
static __inline__ ssize_t tun_put_user(struct tun_struct *tun,
struct sk_buff *skb,
@ -343,10 +334,10 @@ static __inline__ ssize_t tun_put_user(struct tun_struct *tun,
return total;
}
/* Readv */
static ssize_t tun_chr_readv(struct file *file, const struct iovec *iv,
unsigned long count, loff_t *pos)
static ssize_t tun_chr_aio_read(struct kiocb *iocb, const struct iovec *iv,
unsigned long count, loff_t pos)
{
struct file *file = iocb->ki_filp;
struct tun_struct *tun = file->private_data;
DECLARE_WAITQUEUE(wait, current);
struct sk_buff *skb;
@ -426,14 +417,6 @@ static ssize_t tun_chr_readv(struct file *file, const struct iovec *iv,
return ret;
}
/* Read */
static ssize_t tun_chr_read(struct file * file, char __user * buf,
size_t count, loff_t *pos)
{
struct iovec iv = { buf, count };
return tun_chr_readv(file, &iv, 1, pos);
}
static void tun_setup(struct net_device *dev)
{
struct tun_struct *tun = netdev_priv(dev);
@ -764,10 +747,10 @@ static int tun_chr_close(struct inode *inode, struct file *file)
static struct file_operations tun_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = tun_chr_read,
.readv = tun_chr_readv,
.write = tun_chr_write,
.writev = tun_chr_writev,
.read = do_sync_read,
.aio_read = tun_chr_aio_read,
.write = do_sync_write,
.aio_write = tun_chr_aio_write,
.poll = tun_chr_poll,
.ioctl = tun_chr_ioctl,
.open = tun_chr_open,

2
fs/bad_inode.c
View File

@ -40,8 +40,6 @@ static const struct file_operations bad_file_ops =
.aio_fsync = EIO_ERROR,
.fasync = EIO_ERROR,
.lock = EIO_ERROR,
.readv = EIO_ERROR,
.writev = EIO_ERROR,
.sendfile = EIO_ERROR,
.sendpage = EIO_ERROR,
.get_unmapped_area = EIO_ERROR,

2
fs/block_dev.c
View File

@ -1191,8 +1191,6 @@ const struct file_operations def_blk_fops = {
#ifdef CONFIG_COMPAT
.compat_ioctl = compat_blkdev_ioctl,
#endif
.readv = generic_file_readv,
.writev = generic_file_write_nolock,
.sendfile = generic_file_sendfile,
.splice_read = generic_file_splice_read,
.splice_write = generic_file_splice_write,

16
fs/cifs/cifsfs.c
View File

@ -480,18 +480,6 @@ cifs_get_sb(struct file_system_type *fs_type,
return simple_set_mnt(mnt, sb);
}
static ssize_t cifs_file_writev(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos)
{
struct inode *inode = file->f_dentry->d_inode;
ssize_t written;
written = generic_file_writev(file, iov, nr_segs, ppos);
if (!CIFS_I(inode)->clientCanCacheAll)
filemap_fdatawrite(inode->i_mapping);
return written;
}
static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
@ -577,8 +565,6 @@ struct inode_operations cifs_symlink_inode_ops = {
const struct file_operations cifs_file_ops = {
.read = do_sync_read,
.write = do_sync_write,
.readv = generic_file_readv,
.writev = cifs_file_writev,
.aio_read = generic_file_aio_read,
.aio_write = cifs_file_aio_write,
.open = cifs_open,
@ -620,8 +606,6 @@ const struct file_operations cifs_file_direct_ops = {
const struct file_operations cifs_file_nobrl_ops = {
.read = do_sync_read,
.write = do_sync_write,
.readv = generic_file_readv,
.writev = cifs_file_writev,
.aio_read = generic_file_aio_read,
.aio_write = cifs_file_aio_write,
.open = cifs_open,

44
fs/compat.c
View File

@ -70,6 +70,8 @@ int compat_printk(const char *fmt, ...)
return ret;
}
#include "read_write.h"
/*
* Not all architectures have sys_utime, so implement this in terms
* of sys_utimes.
@ -1149,9 +1151,6 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
const struct compat_iovec __user *uvector,
unsigned long nr_segs, loff_t *pos)
{
typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
compat_ssize_t tot_len;
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov=iovstack, *vector;
@ -1234,39 +1233,18 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
fnv = file->f_op->readv;
fnv = file->f_op->aio_read;
} else {
fn = (io_fn_t)file->f_op->write;
fnv = file->f_op->writev;
}
if (fnv) {
ret = fnv(file, iov, nr_segs, pos);
goto out;
fnv = file->f_op->aio_write;
}
/* Do it by hand, with file-ops */
ret = 0;
vector = iov;
while (nr_segs > 0) {
void __user * base;
size_t len;
ssize_t nr;
if (fnv)
ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
pos, fnv);
else
ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
base = vector->iov_base;
len = vector->iov_len;
vector++;
nr_segs--;
nr = fn(file, base, len, pos);
if (nr < 0) {
if (!ret) ret = nr;
break;
}
ret += nr;
if (nr != len)
break;
}
out:
if (iov != iovstack)
kfree(iov);
@ -1294,7 +1272,7 @@ compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec, unsign
goto out;
ret = -EINVAL;
if (!file->f_op || (!file->f_op->readv && !file->f_op->read))
if (!file->f_op || (!file->f_op->aio_read && !file->f_op->read))
goto out;
ret = compat_do_readv_writev(READ, file, vec, vlen, &file->f_pos);
@ -1317,7 +1295,7 @@ compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec, unsig
goto out;
ret = -EINVAL;
if (!file->f_op || (!file->f_op->writev && !file->f_op->write))
if (!file->f_op || (!file->f_op->aio_write && !file->f_op->write))
goto out;
ret = compat_do_readv_writev(WRITE, file, vec, vlen, &file->f_pos);

2
fs/ext2/file.c
View File

@ -53,8 +53,6 @@ const struct file_operations ext2_file_operations = {
.open = generic_file_open,
.release = ext2_release_file,
.fsync = ext2_sync_file,
.readv = generic_file_readv,
.writev = generic_file_writev,
.sendfile = generic_file_sendfile,
.splice_read = generic_file_splice_read,
.splice_write = generic_file_splice_write,

2
fs/ext3/file.c
View File

@ -112,8 +112,6 @@ const struct file_operations ext3_file_operations = {
.write = do_sync_write,
.aio_read = generic_file_aio_read,
.aio_write = ext3_file_write,
.readv = generic_file_readv,
.writev = generic_file_writev,
.ioctl = ext3_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext3_compat_ioctl,

2
fs/fat/file.c
View File

@ -127,8 +127,6 @@ const struct file_operations fat_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
.readv = generic_file_readv,
.writev = generic_file_writev,
.aio_read = generic_file_aio_read,
.aio_write = generic_file_aio_write,
.mmap = generic_file_mmap,

37
fs/fuse/dev.c
View File

@ -680,14 +680,15 @@ static int fuse_read_interrupt(struct fuse_conn *fc, struct fuse_req *req,
* request_end(). Otherwise add it to the processing list, and set
* the 'sent' flag.
*/
static ssize_t fuse_dev_readv(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *off)
static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
int err;
struct fuse_req *req;
struct fuse_in *in;
struct fuse_copy_state cs;
unsigned reqsize;
struct file *file = iocb->ki_filp;
struct fuse_conn *fc = fuse_get_conn(file);
if (!fc)
return -EPERM;
@ -761,15 +762,6 @@ static ssize_t fuse_dev_readv(struct file *file, const struct iovec *iov,
return err;
}
static ssize_t fuse_dev_read(struct file *file, char __user *buf,
size_t nbytes, loff_t *off)
{
struct iovec iov;
iov.iov_len = nbytes;
iov.iov_base = buf;
return fuse_dev_readv(file, &iov, 1, off);
}
/* Look up request on processing list by unique ID */
static struct fuse_req *request_find(struct fuse_conn *fc, u64 unique)
{
@ -814,15 +806,15 @@ static int copy_out_args(struct fuse_copy_state *cs, struct fuse_out *out,
* it from the list and copy the rest of the buffer to the request.
* The request is finished by calling request_end()
*/
static ssize_t fuse_dev_writev(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *off)
static ssize_t fuse_dev_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
int err;
unsigned nbytes = iov_length(iov, nr_segs);
struct fuse_req *req;
struct fuse_out_header oh;
struct fuse_copy_state cs;
struct fuse_conn *fc = fuse_get_conn(file);
struct fuse_conn *fc = fuse_get_conn(iocb->ki_filp);
if (!fc)
return -EPERM;
@ -898,15 +890,6 @@ static ssize_t fuse_dev_writev(struct file *file, const struct iovec *iov,
return err;
}
static ssize_t fuse_dev_write(struct file *file, const char __user *buf,
size_t nbytes, loff_t *off)
{
struct iovec iov;
iov.iov_len = nbytes;
iov.iov_base = (char __user *) buf;
return fuse_dev_writev(file, &iov, 1, off);
}
static unsigned fuse_dev_poll(struct file *file, poll_table *wait)
{
unsigned mask = POLLOUT | POLLWRNORM;
@ -1041,10 +1024,10 @@ static int fuse_dev_fasync(int fd, struct file *file, int on)
const struct file_operations fuse_dev_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = fuse_dev_read,
.readv = fuse_dev_readv,
.write = fuse_dev_write,
.writev = fuse_dev_writev,
.read = do_sync_read,
.aio_read = fuse_dev_read,
.write = do_sync_write,
.aio_write = fuse_dev_write,
.poll = fuse_dev_poll,
.release = fuse_dev_release,
.fasync = fuse_dev_fasync,

2
fs/hostfs/hostfs_kern.c
View File

@ -389,8 +389,6 @@ static const struct file_operations hostfs_file_fops = {
.sendfile = generic_file_sendfile,
.aio_read = generic_file_aio_read,
.aio_write = generic_file_aio_write,
.readv = generic_file_readv,
.writev = generic_file_writev,
.write = generic_file_write,
.mmap = generic_file_mmap,
.open = hostfs_file_open,

2
fs/jfs/file.c
View File

@ -108,8 +108,6 @@ const struct file_operations jfs_file_operations = {
.aio_read = generic_file_aio_read,
.aio_write = generic_file_aio_write,
.mmap = generic_file_mmap,
.readv = generic_file_readv,
.writev = generic_file_writev,
.sendfile = generic_file_sendfile,
.fsync = jfs_fsync,
.release = jfs_release,

2
fs/ntfs/file.c
View File

@ -2298,11 +2298,9 @@ const struct file_operations ntfs_file_ops = {
.llseek = generic_file_llseek, /* Seek inside file. */
.read = generic_file_read, /* Read from file. */
.aio_read = generic_file_aio_read, /* Async read from file. */
.readv = generic_file_readv, /* Read from file. */
#ifdef NTFS_RW
.write = ntfs_file_write, /* Write to file. */
.aio_write = ntfs_file_aio_write, /* Async write to file. */
.writev = ntfs_file_writev, /* Write to file. */
/*.release = ,*/ /* Last file is closed. See
fs/ext2/file.c::
ext2_release_file() for

59
fs/pipe.c
View File

@ -218,9 +218,10 @@ static struct pipe_buf_operations anon_pipe_buf_ops = {
};
static ssize_t
pipe_readv(struct file *filp, const struct iovec *_iov,
unsigned long nr_segs, loff_t *ppos)
pipe_read(struct kiocb *iocb, const struct iovec *_iov,
unsigned long nr_segs, loff_t pos)
{
struct file *filp = iocb->ki_filp;
struct inode *inode = filp->f_dentry->d_inode;
struct pipe_inode_info *pipe;
int do_wakeup;
@ -330,17 +331,10 @@ pipe_readv(struct file *filp, const struct iovec *_iov,
}
static ssize_t
pipe_read(struct file *filp, char __user *buf, size_t count, loff_t *ppos)
{
struct iovec iov = { .iov_base = buf, .iov_len = count };
return pipe_readv(filp, &iov, 1, ppos);
}
static ssize_t
pipe_writev(struct file *filp, const struct iovec *_iov,
unsigned long nr_segs, loff_t *ppos)
pipe_write(struct kiocb *iocb, const struct iovec *_iov,
unsigned long nr_segs, loff_t ppos)
{
struct file *filp = iocb->ki_filp;
struct inode *inode = filp->f_dentry->d_inode;
struct pipe_inode_info *pipe;
ssize_t ret;
@ -509,15 +503,6 @@ pipe_writev(struct file *filp, const struct iovec *_iov,
return ret;
}
static ssize_t
pipe_write(struct file *filp, const char __user *buf,
size_t count, loff_t *ppos)
{
struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = count };
return pipe_writev(filp, &iov, 1, ppos);
}
static ssize_t
bad_pipe_r(struct file *filp, char __user *buf, size_t count, loff_t *ppos)
{
@ -736,8 +721,8 @@ pipe_rdwr_open(struct inode *inode, struct file *filp)
*/
const struct file_operations read_fifo_fops = {
.llseek = no_llseek,
.read = pipe_read,
.readv = pipe_readv,
.read = do_sync_read,
.aio_read = pipe_read,
.write = bad_pipe_w,
.poll = pipe_poll,
.ioctl = pipe_ioctl,
@ -749,8 +734,8 @@ const struct file_operations read_fifo_fops = {
const struct file_operations write_fifo_fops = {
.llseek = no_llseek,
.read = bad_pipe_r,
.write = pipe_write,
.writev = pipe_writev,
.write = do_sync_write,
.aio_write = pipe_write,
.poll = pipe_poll,
.ioctl = pipe_ioctl,
.open = pipe_write_open,
@ -760,10 +745,10 @@ const struct file_operations write_fifo_fops = {
const struct file_operations rdwr_fifo_fops = {
.llseek = no_llseek,
.read = pipe_read,
.readv = pipe_readv,
.write = pipe_write,
.writev = pipe_writev,
.read = do_sync_read,
.aio_read = pipe_read,
.write = do_sync_write,
.aio_write = pipe_write,
.poll = pipe_poll,
.ioctl = pipe_ioctl,
.open = pipe_rdwr_open,
@ -773,8 +758,8 @@ const struct file_operations rdwr_fifo_fops = {
static struct file_operations read_pipe_fops = {
.llseek = no_llseek,
.read = pipe_read,
.readv = pipe_readv,
.read = do_sync_read,
.aio_read = pipe_read,
.write = bad_pipe_w,
.poll = pipe_poll,
.ioctl = pipe_ioctl,
@ -786,8 +771,8 @@ static struct file_operations read_pipe_fops = {
static struct file_operations write_pipe_fops = {
.llseek = no_llseek,
.read = bad_pipe_r,
.write = pipe_write,
.writev = pipe_writev,
.write = do_sync_write,
.aio_write = pipe_write,
.poll = pipe_poll,
.ioctl = pipe_ioctl,
.open = pipe_write_open,
@ -797,10 +782,10 @@ static struct file_operations write_pipe_fops = {
static struct file_operations rdwr_pipe_fops = {
.llseek = no_llseek,
.read = pipe_read,
.readv = pipe_readv,
.write = pipe_write,
.writev = pipe_writev,
.read = do_sync_read,
.aio_read = pipe_read,
.write = do_sync_write,
.aio_write = pipe_write,
.poll = pipe_poll,
.ioctl = pipe_ioctl,
.open = pipe_rdwr_open,

101
fs/read_write.c
View File

@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/syscalls.h>
#include <linux/pagemap.h>
#include "read_write.h"
#include <asm/uaccess.h>
#include <asm/unistd.h>
@ -450,6 +451,62 @@ unsigned long iov_shorten(struct iovec *iov, unsigned long nr_segs, size_t to)
EXPORT_UNUSED_SYMBOL(iov_shorten); /* June 2006 */
ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
unsigned long nr_segs, size_t len, loff_t *ppos, iov_fn_t fn)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
kiocb.ki_left = len;
kiocb.ki_nbytes = len;
for (;;) {
ret = fn(&kiocb, iov, nr_segs, kiocb.ki_pos);
if (ret != -EIOCBRETRY)
break;
wait_on_retry_sync_kiocb(&kiocb);
}
if (ret == -EIOCBQUEUED)
ret = wait_on_sync_kiocb(&kiocb);
*ppos = kiocb.ki_pos;
return ret;
}
/* Do it by hand, with file-ops */
ssize_t do_loop_readv_writev(struct file *filp, struct iovec *iov,
unsigned long nr_segs, loff_t *ppos, io_fn_t fn)
{
struct iovec *vector = iov;
ssize_t ret = 0;
while (nr_segs > 0) {
void __user *base;
size_t len;
ssize_t nr;
base = vector->iov_base;
len = vector->iov_len;
vector++;
nr_segs--;
nr = fn(filp, base, len, ppos);
if (nr < 0) {
if (!ret)
ret = nr;
break;
}
ret += nr;
if (nr != len)
break;
}
return ret;
}
/* A write operation does a read from user space and vice versa */
#define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ)
@ -457,12 +514,9 @@ static ssize_t do_readv_writev(int type, struct file *file,
const struct iovec __user * uvector,
unsigned long nr_segs, loff_t *pos)
{
typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
size_t tot_len;
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov=iovstack, *vector;
struct iovec *iov = iovstack;
ssize_t ret;
int seg;
io_fn_t fn;
@ -532,39 +586,18 @@ static ssize_t do_readv_writev(int type, struct file *file,
fnv = NULL;
if (type == READ) {
fn = file->f_op->read;
fnv = file->f_op->readv;
fnv = file->f_op->aio_read;
} else {
fn = (io_fn_t)file->f_op->write;
fnv = file->f_op->writev;
}
if (fnv) {
ret = fnv(file, iov, nr_segs, pos);
goto out;
fnv = file->f_op->aio_write;
}
/* Do it by hand, with file-ops */
ret = 0;
vector = iov;
while (nr_segs > 0) {
void __user * base;
size_t len;
ssize_t nr;
if (fnv)
ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
pos, fnv);
else
ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
base = vector->iov_base;
len = vector->iov_len;
vector++;
nr_segs--;
nr = fn(file, base, len, pos);
if (nr < 0) {
if (!ret) ret = nr;
break;
}
ret += nr;
if (nr != len)
break;
}
out:
if (iov != iovstack)
kfree(iov);
@ -585,7 +618,7 @@ ssize_t vfs_readv(struct file *file, const struct iovec __user *vec,
{
if (!(file->f_mode & FMODE_READ))
return -EBADF;
if (!file->f_op || (!file->f_op->readv && !file->f_op->read))
if (!file->f_op || (!file->f_op->aio_read && !file->f_op->read))
return -EINVAL;
return do_readv_writev(READ, file, vec, vlen, pos);
@ -598,7 +631,7 @@ ssize_t vfs_writev(struct file *file, const struct iovec __user *vec,
{
if (!(file->f_mode & FMODE_WRITE))
return -EBADF;
if (!file->f_op || (!file->f_op->writev && !file->f_op->write))
if (!file->f_op || (!file->f_op->aio_write && !file->f_op->write))
return -EINVAL;
return do_readv_writev(WRITE, file, vec, vlen, pos);

14
fs/read_write.h Normal file
View File

@ -0,0 +1,14 @@
/*
* This file is only for sharing some helpers from read_write.c with compat.c.
* Don't use anywhere else.
*/
typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
typedef ssize_t (*iov_fn_t)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
unsigned long nr_segs, size_t len, loff_t *ppos, iov_fn_t fn);
ssize_t do_loop_readv_writev(struct file *filp, struct iovec *iov,
unsigned long nr_segs, loff_t *ppos, io_fn_t fn);

94
fs/xfs/linux-2.6/xfs_file.c
View File

@ -123,96 +123,6 @@ xfs_file_aio_write_invis(
return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos);
}
STATIC inline ssize_t
__xfs_file_readv(
struct file *file,
const struct iovec *iov,
int ioflags,
unsigned long nr_segs,
loff_t *ppos)
{
struct inode *inode = file->f_mapping->host;
bhv_vnode_t *vp = vn_from_inode(inode);
struct kiocb kiocb;
ssize_t rval;
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
if (unlikely(file->f_flags & O_DIRECT))
ioflags |= IO_ISDIRECT;
rval = bhv_vop_read(vp, &kiocb, iov, nr_segs,
&kiocb.ki_pos, ioflags, NULL);
*ppos = kiocb.ki_pos;
return rval;
}
STATIC ssize_t
xfs_file_readv(
struct file *file,
const struct iovec *iov,
unsigned long nr_segs,
loff_t *ppos)
{
return __xfs_file_readv(file, iov, 0, nr_segs, ppos);
}
STATIC ssize_t
xfs_file_readv_invis(
struct file *file,
const struct iovec *iov,
unsigned long nr_segs,
loff_t *ppos)
{
return __xfs_file_readv(file, iov, IO_INVIS, nr_segs, ppos);
}
STATIC inline ssize_t
__xfs_file_writev(
struct file *file,
const struct iovec *iov,
int ioflags,
unsigned long nr_segs,
loff_t *ppos)
{
struct inode *inode = file->f_mapping->host;
bhv_vnode_t *vp = vn_from_inode(inode);
struct kiocb kiocb;
ssize_t rval;
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
if (unlikely(file->f_flags & O_DIRECT))
ioflags |= IO_ISDIRECT;
rval = bhv_vop_write(vp, &kiocb, iov, nr_segs,
&kiocb.ki_pos, ioflags, NULL);
*ppos = kiocb.ki_pos;
return rval;
}
STATIC ssize_t
xfs_file_writev(
struct file *file,
const struct iovec *iov,
unsigned long nr_segs,
loff_t *ppos)
{
return __xfs_file_writev(file, iov, 0, nr_segs, ppos);
}
STATIC ssize_t
xfs_file_writev_invis(
struct file *file,
const struct iovec *iov,
unsigned long nr_segs,
loff_t *ppos)
{
return __xfs_file_writev(file, iov, IO_INVIS, nr_segs, ppos);
}
STATIC ssize_t
xfs_file_sendfile(
struct file *filp,
@ -540,8 +450,6 @@ const struct file_operations xfs_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
.readv = xfs_file_readv,
.writev = xfs_file_writev,
.aio_read = xfs_file_aio_read,
.aio_write = xfs_file_aio_write,
.sendfile = xfs_file_sendfile,
@ -565,8 +473,6 @@ const struct file_operations xfs_invis_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
.readv = xfs_file_readv_invis,
.writev = xfs_file_writev_invis,
.aio_read = xfs_file_aio_read_invis,
.aio_write = xfs_file_aio_write_invis,
.sendfile = xfs_file_sendfile_invis,

6
include/linux/fs.h
View File

@ -1113,8 +1113,6 @@ struct file_operations {
int (*aio_fsync) (struct kiocb *, int datasync);
int (*fasync) (int, struct file *, int);
int (*lock) (struct file *, int, struct file_lock *);
ssize_t (*readv) (struct file *, const struct iovec *, unsigned long, loff_t *);
ssize_t (*writev) (struct file *, const struct iovec *, unsigned long, loff_t *);
ssize_t (*sendfile) (struct file *, loff_t *, size_t, read_actor_t, void *);
ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
@ -1734,10 +1732,6 @@ extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
extern void
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
extern ssize_t generic_file_readv(struct file *filp, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos);
ssize_t generic_file_writev(struct file *filp, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos);
extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
extern loff_t remote_llseek(struct file *file, loff_t offset, int origin);

36
mm/filemap.c
View File

@ -2421,42 +2421,6 @@ ssize_t generic_file_write(struct file *file, const char __user *buf,
}
EXPORT_SYMBOL(generic_file_write);
ssize_t generic_file_readv(struct file *filp, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
ret = __generic_file_aio_read(&kiocb, iov, nr_segs, ppos);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&kiocb);
return ret;
}
EXPORT_SYMBOL(generic_file_readv);
ssize_t generic_file_writev(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos)
{
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
ssize_t ret;
mutex_lock(&inode->i_mutex);
ret = __generic_file_write_nolock(file, iov, nr_segs, ppos);
mutex_unlock(&inode->i_mutex);
if (ret > 0 && ((file->f_flags & O_SYNC) || IS_SYNC(inode))) {
int err;
err = sync_page_range(inode, mapping, *ppos - ret, ret);
if (err < 0)
ret = err;
}
return ret;
}
EXPORT_SYMBOL(generic_file_writev);
/*
* Called under i_mutex for writes to S_ISREG files. Returns -EIO if something
* went wrong during pagecache shootdown.

40
net/socket.c
View File

@ -110,10 +110,6 @@ static long compat_sock_ioctl(struct file *file,
unsigned int cmd, unsigned long arg);
#endif
static int sock_fasync(int fd, struct file *filp, int on);
static ssize_t sock_readv(struct file *file, const struct iovec *vector,
unsigned long count, loff_t *ppos);
static ssize_t sock_writev(struct file *file, const struct iovec *vector,
unsigned long count, loff_t *ppos);
static ssize_t sock_sendpage(struct file *file, struct page *page,
int offset, size_t size, loff_t *ppos, int more);
@ -136,8 +132,6 @@ static struct file_operations socket_file_ops = {
.open = sock_no_open, /* special open code to disallow open via /proc */
.release = sock_close,
.fasync = sock_fasync,
.readv = sock_readv,
.writev = sock_writev,
.sendpage = sock_sendpage,
.splice_write = generic_splice_sendpage,
};
@ -700,23 +694,6 @@ static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
}
static ssize_t sock_readv(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos)
{
struct kiocb iocb;
struct sock_iocb siocb;
struct msghdr msg;
int ret;
init_sync_kiocb(&iocb, NULL);
iocb.private = &siocb;
ret = do_sock_read(&msg, &iocb, file, iov, nr_segs);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
return ret;
}
static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
@ -759,23 +736,6 @@ static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
return __sock_sendmsg(iocb, sock, msg, size);
}
static ssize_t sock_writev(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *ppos)
{
struct msghdr msg;
struct kiocb iocb;
struct sock_iocb siocb;
int ret;
init_sync_kiocb(&iocb, NULL);
iocb.private = &siocb;
ret = do_sock_write(&msg, &iocb, file, iov, nr_segs);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
return ret;
}
static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{

40
sound/core/pcm_native.c
View File

@ -2852,8 +2852,8 @@ static ssize_t snd_pcm_write(struct file *file, const char __user *buf,
return result;
}
static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector,
unsigned long count, loff_t * offset)
static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
struct snd_pcm_file *pcm_file;
@ -2864,22 +2864,22 @@ static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector,
void __user **bufs;
snd_pcm_uframes_t frames;
pcm_file = file->private_data;
pcm_file = iocb->ki_filp->private_data;
substream = pcm_file->substream;
snd_assert(substream != NULL, return -ENXIO);
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if (count > 1024 || count != runtime->channels)
if (nr_segs > 1024 || nr_segs != runtime->channels)
return -EINVAL;
if (!frame_aligned(runtime, _vector->iov_len))
if (!frame_aligned(runtime, iov->iov_len))
return -EINVAL;
frames = bytes_to_samples(runtime, _vector->iov_len);
bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL);
frames = bytes_to_samples(runtime, iov->iov_len);
bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL);
if (bufs == NULL)
return -ENOMEM;
for (i = 0; i < count; ++i)
bufs[i] = _vector[i].iov_base;
for (i = 0; i < nr_segs; ++i)
bufs[i] = iov[i].iov_base;
result = snd_pcm_lib_readv(substream, bufs, frames);
if (result > 0)
result = frames_to_bytes(runtime, result);
@ -2887,8 +2887,8 @@ static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector,
return result;
}
static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector,
unsigned long count, loff_t * offset)
static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
struct snd_pcm_file *pcm_file;
struct snd_pcm_substream *substream;
@ -2898,7 +2898,7 @@ static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector,
void __user **bufs;
snd_pcm_uframes_t frames;
pcm_file = file->private_data;
pcm_file = iocb->ki_filp->private_data;
substream = pcm_file->substream;
snd_assert(substream != NULL, result = -ENXIO; goto end);
runtime = substream->runtime;
@ -2906,17 +2906,17 @@ static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector,
result = -EBADFD;
goto end;
}
if (count > 128 || count != runtime->channels ||
!frame_aligned(runtime, _vector->iov_len)) {
if (nr_segs > 128 || nr_segs != runtime->channels ||
!frame_aligned(runtime, iov->iov_len)) {
result = -EINVAL;
goto end;
}
frames = bytes_to_samples(runtime, _vector->iov_len);
bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL);
frames = bytes_to_samples(runtime, iov->iov_len);
bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL);
if (bufs == NULL)
return -ENOMEM;
for (i = 0; i < count; ++i)
bufs[i] = _vector[i].iov_base;
for (i = 0; i < nr_segs; ++i)
bufs[i] = iov[i].iov_base;
result = snd_pcm_lib_writev(substream, bufs, frames);
if (result > 0)
result = frames_to_bytes(runtime, result);
@ -3426,7 +3426,7 @@ struct file_operations snd_pcm_f_ops[2] = {
{
.owner = THIS_MODULE,
.write = snd_pcm_write,
.writev = snd_pcm_writev,
.aio_write = snd_pcm_aio_write,
.open = snd_pcm_playback_open,
.release = snd_pcm_release,
.poll = snd_pcm_playback_poll,
@ -3438,7 +3438,7 @@ struct file_operations snd_pcm_f_ops[2] = {
{
.owner = THIS_MODULE,
.read = snd_pcm_read,
.readv = snd_pcm_readv,
.aio_read = snd_pcm_aio_read,
.open = snd_pcm_capture_open,
.release = snd_pcm_release,
.poll = snd_pcm_capture_poll,