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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-04-03 20:29:04 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-05-06 23:39:41 +0200 |
| commit | b30ac0fc4109701fc122d41ee085c65b52dc44a3 (patch) | |
| tree | cce87ce1f0b03f0d82d2f82df949b5e4548a0abc /fs | |
| parent | ocfs2: switch to ->write_iter() (diff) | |
| download | linux-b30ac0fc4109701fc122d41ee085c65b52dc44a3.tar.xz linux-b30ac0fc4109701fc122d41ee085c65b52dc44a3.zip | |
btrfs: switch to ->write_iter()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/file.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 39014d5db9d5..17e7393c50f0 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -447,7 +447,7 @@ static noinline int btrfs_copy_from_user(loff_t pos, int num_pages, write_bytes -= copied; total_copied += copied; - /* Return to btrfs_file_aio_write to fault page */ + /* Return to btrfs_file_write_iter to fault page */ if (unlikely(copied == 0)) break; @@ -1708,9 +1708,8 @@ static void update_time_for_write(struct inode *inode) inode_inc_iversion(inode); } -static ssize_t btrfs_file_aio_write(struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +static ssize_t btrfs_file_write_iter(struct kiocb *iocb, + struct iov_iter *from) { struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); @@ -1719,15 +1718,12 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, u64 end_pos; ssize_t num_written = 0; ssize_t err = 0; - size_t count; + size_t count = iov_iter_count(from); bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host); - struct iov_iter i; + loff_t pos = iocb->ki_pos; mutex_lock(&inode->i_mutex); - count = iov_length(iov, nr_segs); - iov_iter_init(&i, WRITE, iov, nr_segs, count); - current->backing_dev_info = inode->i_mapping->backing_dev_info; err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode)); if (err) { @@ -1740,7 +1736,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, goto out; } - iov_iter_truncate(&i, count); + iov_iter_truncate(from, count); err = file_remove_suid(file); if (err) { @@ -1783,9 +1779,9 @@ 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, &i, pos); + num_written = __btrfs_direct_write(iocb, from, pos); } else { - num_written = __btrfs_buffered_write(file, &i, pos); + num_written = __btrfs_buffered_write(file, from, pos); if (num_written > 0) iocb->ki_pos = pos + num_written; } @@ -2623,10 +2619,10 @@ out: const struct file_operations btrfs_file_operations = { .llseek = btrfs_file_llseek, .read = new_sync_read, - .write = do_sync_write, + .write = new_sync_write, .read_iter = generic_file_read_iter, .splice_read = generic_file_splice_read, - .aio_write = btrfs_file_aio_write, + .write_iter = btrfs_file_write_iter, .mmap = btrfs_file_mmap, .open = generic_file_open, .release = btrfs_release_file, |