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cifs: switch to ->write_iter()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-04-03 12:05:17 -04:00
parent d4637bc18f
commit 3dae8750c3
3 changed files with 35 additions and 42 deletions
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31
fs/cifs/cifsfs.c
View File

@ -733,8 +733,7 @@ out_nls:
goto out;
}
static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
@ -745,14 +744,14 @@ static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (written)
return written;
written = generic_file_aio_write(iocb, iov, nr_segs, pos);
written = generic_file_write_iter(iocb, from);
if (CIFS_CACHE_WRITE(CIFS_I(inode)))
goto out;
rc = filemap_fdatawrite(inode->i_mapping);
if (rc)
cifs_dbg(FYI, "cifs_file_aio_write: %d rc on %p inode\n",
cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n",
rc, inode);
out:
@ -889,9 +888,9 @@ const struct inode_operations cifs_symlink_inode_ops = {
const struct file_operations cifs_file_ops = {
.read = new_sync_read,
.write = do_sync_write,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.aio_write = cifs_file_aio_write,
.write_iter = cifs_file_write_iter,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@ -908,9 +907,9 @@ const struct file_operations cifs_file_ops = {
const struct file_operations cifs_file_strict_ops = {
.read = new_sync_read,
.write = do_sync_write,
.write = new_sync_write,
.read_iter = cifs_strict_readv,
.aio_write = cifs_strict_writev,
.write_iter = cifs_strict_writev,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@ -928,9 +927,9 @@ const struct file_operations cifs_file_strict_ops = {
const struct file_operations cifs_file_direct_ops = {
/* BB reevaluate whether they can be done with directio, no cache */
.read = new_sync_read,
.write = do_sync_write,
.write = new_sync_write,
.read_iter = cifs_user_readv,
.aio_write = cifs_user_writev,
.write_iter = cifs_user_writev,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@ -947,9 +946,9 @@ const struct file_operations cifs_file_direct_ops = {
const struct file_operations cifs_file_nobrl_ops = {
.read = new_sync_read,
.write = do_sync_write,
.write = new_sync_write,
.read_iter = generic_file_read_iter,
.aio_write = cifs_file_aio_write,
.write_iter = cifs_file_write_iter,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_fsync,
@ -965,9 +964,9 @@ const struct file_operations cifs_file_nobrl_ops = {
const struct file_operations cifs_file_strict_nobrl_ops = {
.read = new_sync_read,
.write = do_sync_write,
.write = new_sync_write,
.read_iter = cifs_strict_readv,
.aio_write = cifs_strict_writev,
.write_iter = cifs_strict_writev,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_strict_fsync,
@ -984,9 +983,9 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
const struct file_operations cifs_file_direct_nobrl_ops = {
/* BB reevaluate whether they can be done with directio, no cache */
.read = new_sync_read,
.write = do_sync_write,
.write = new_sync_write,
.read_iter = cifs_user_readv,
.aio_write = cifs_user_writev,
.write_iter = cifs_user_writev,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_fsync,

6
fs/cifs/cifsfs.h
View File

@ -87,10 +87,8 @@ extern int cifs_close(struct inode *inode, struct file *file);
extern int cifs_closedir(struct inode *inode, struct file *file);
extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
extern ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos);
extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos);
extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
extern int cifs_lock(struct file *, int, struct file_lock *);
extern int cifs_fsync(struct file *, loff_t, loff_t, int);
extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);

40
fs/cifs/file.c
View File

@ -2385,14 +2385,12 @@ cifs_uncached_retry_writev(struct cifs_writedata *wdata)
}
static ssize_t
cifs_iovec_write(struct file *file, const struct iovec *iov,
unsigned long nr_segs, loff_t *poffset)
cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
{
unsigned long nr_pages, i;
size_t bytes, copied, len, cur_len;
ssize_t total_written = 0;
loff_t offset;
struct iov_iter it;
struct cifsFileInfo *open_file;
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb;
@ -2401,14 +2399,16 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
int rc;
pid_t pid;
len = iov_length(iov, nr_segs);
if (!len)
return 0;
len = iov_iter_count(from);
rc = generic_write_checks(file, poffset, &len, 0);
if (rc)
return rc;
if (!len)
return 0;
iov_iter_truncate(from, len);
INIT_LIST_HEAD(&wdata_list);
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
open_file = file->private_data;
@ -2424,7 +2424,6 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
else
pid = current->tgid;
iov_iter_init(&it, WRITE, iov, nr_segs, len);
do {
size_t save_len;
@ -2446,7 +2445,7 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
for (i = 0; i < nr_pages; i++) {
bytes = min_t(size_t, cur_len, PAGE_SIZE);
copied = copy_page_from_iter(wdata->pages[i], 0, bytes,
&it);
from);
cur_len -= copied;
/*
* If we didn't copy as much as we expected, then that
@ -2545,11 +2544,11 @@ restart_loop:
return total_written ? total_written : (ssize_t)rc;
}
ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from)
{
ssize_t written;
struct inode *inode;
loff_t pos = iocb->ki_pos;
inode = file_inode(iocb->ki_filp);
@ -2559,7 +2558,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
* write request.
*/
written = cifs_iovec_write(iocb->ki_filp, iov, nr_segs, &pos);
written = cifs_iovec_write(iocb->ki_filp, from, &pos);
if (written > 0) {
CIFS_I(inode)->invalid_mapping = true;
iocb->ki_pos = pos;
@ -2569,8 +2568,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
}
static ssize_t
cifs_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
cifs_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
@ -2588,10 +2586,10 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov,
mutex_lock(&inode->i_mutex);
if (file->f_flags & O_APPEND)
lock_pos = i_size_read(inode);
if (!cifs_find_lock_conflict(cfile, lock_pos, iov_length(iov, nr_segs),
if (!cifs_find_lock_conflict(cfile, lock_pos, iov_iter_count(from),
server->vals->exclusive_lock_type, NULL,
CIFS_WRITE_OP)) {
rc = __generic_file_aio_write(iocb, iov, nr_segs);
rc = __generic_file_write_iter(iocb, from);
mutex_unlock(&inode->i_mutex);
if (rc > 0) {
@ -2609,8 +2607,7 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov,
}
ssize_t
cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
@ -2628,11 +2625,10 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))
&& ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0)) {
written = generic_file_aio_write(
iocb, iov, nr_segs, pos);
written = generic_file_write_iter(iocb, from);
goto out;
}
written = cifs_writev(iocb, iov, nr_segs, pos);
written = cifs_writev(iocb, from);
goto out;
}
/*
@ -2641,7 +2637,7 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
* affected pages because it may cause a error with mandatory locks on
* these pages but not on the region from pos to ppos+len-1.
*/
written = cifs_user_writev(iocb, iov, nr_segs, pos);
written = cifs_user_writev(iocb, from);
if (written > 0 && CIFS_CACHE_READ(cinode)) {
/*
* Windows 7 server can delay breaking level2 oplock if a write