diff options
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, |