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| author | Chris Mason <chris.mason@oracle.com> | 2010-05-26 10:59:53 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2010-05-26 10:59:53 -0400 |
| commit | 3f7c579c41a3d20af76fd6ff1f6b949edf105fd1 (patch) | |
| tree | 374d50346763fb37299f5de93f48901596f21e59 /fs/btrfs/inode.c | |
| parent | 4845e44ffdb26be9b25610664228e8ecaf949a0d (diff) | |
| download | lwn-3f7c579c41a3d20af76fd6ff1f6b949edf105fd1.tar.gz lwn-3f7c579c41a3d20af76fd6ff1f6b949edf105fd1.zip | |
Btrfs: move O_DIRECT space reservation to btrfs_direct_IO
This moves the delalloc space reservation done for O_DIRECT
into btrfs_direct_IO. This way we don't leak reserved space
if the generic O_DIRECT write code errors out before it
calls into btrfs_direct_IO.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 00aefbdcc2df..ca9d5501d340 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5602,9 +5602,16 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, ssize_t ret; int writing = rw & WRITE; int write_bits = 0; + size_t count = iov_length(iov, nr_segs); lockstart = offset; - lockend = offset + iov_length(iov, nr_segs) - 1; + lockend = offset + count - 1; + + if (writing) { + ret = btrfs_delalloc_reserve_space(inode, count); + if (ret) + goto out; + } while (1) { lock_extent_bits(&BTRFS_I(inode)->io_tree, lockstart, lockend, |