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authorAl Viro <viro@zeniv.linux.org.uk>2014-03-04 07:09:39 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2014-05-07 01:32:43 +0400
commit0ae5e4d370599592eab845527b31708a4f3411be (patch)
treee4116194315802a5911b3cfcb5a9af82896c5e22 /fs/btrfs/file.c
parentf8579f8673b7ecdb7a81d5d5bb1d981093d9aa94 (diff)
downloadlinux-0ae5e4d370599592eab845527b31708a4f3411be.tar.xz
__btrfs_direct_write(): switch to iov_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/btrfs/file.c')
-rw-r--r--fs/btrfs/file.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 9fe20c2052af..1dafe0701daf 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1658,25 +1658,23 @@ again:
}
static ssize_t __btrfs_direct_write(struct kiocb *iocb,
- const struct iovec *iov,
- unsigned long nr_segs, loff_t pos,
+ struct iov_iter *from,
+ loff_t pos,
size_t count, size_t ocount)
{
struct file *file = iocb->ki_filp;
- struct iov_iter i;
ssize_t written;
ssize_t written_buffered;
loff_t endbyte;
int err;
- iov_iter_init(&i, iov, nr_segs, count, 0);
- written = generic_file_direct_write(iocb, &i, pos, count, ocount);
+ written = generic_file_direct_write(iocb, from, pos, count, ocount);
if (written < 0 || written == count)
return written;
pos += written;
- written_buffered = __btrfs_buffered_write(file, &i, pos);
+ written_buffered = __btrfs_buffered_write(file, from, pos);
if (written_buffered < 0) {
err = written_buffered;
goto out;
@@ -1724,6 +1722,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
ssize_t err = 0;
size_t count, ocount;
bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host);
+ struct iov_iter i;
mutex_lock(&inode->i_mutex);
@@ -1746,6 +1745,8 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
goto out;
}
+ iov_iter_init(&i, iov, nr_segs, count, 0);
+
err = file_remove_suid(file);
if (err) {
mutex_unlock(&inode->i_mutex);
@@ -1787,13 +1788,9 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
atomic_inc(&BTRFS_I(inode)->sync_writers);
if (unlikely(file->f_flags & O_DIRECT)) {
- num_written = __btrfs_direct_write(iocb, iov, nr_segs,
+ num_written = __btrfs_direct_write(iocb, &i,
pos, count, ocount);
} else {
- struct iov_iter i;
-
- iov_iter_init(&i, iov, nr_segs, count, num_written);
-
num_written = __btrfs_buffered_write(file, &i, pos);
if (num_written > 0)
iocb->ki_pos = pos + num_written;