diff options
Diffstat (limited to 'fs/btrfs/file-item.c')
| -rw-r--r-- | fs/btrfs/file-item.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index bb22a4435b2d1..08bcfa92a2226 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -177,6 +177,15 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root, WARN_ON(bio->bi_vcnt <= 0); + /* + * the free space stuff is only read when it hasn't been + * updated in the current transaction. So, we can safely + * read from the commit root and sidestep a nasty deadlock + * between reading the free space cache and updating the csum tree. + */ + if (btrfs_is_free_space_inode(root, inode)) + path->search_commit_root = 1; + disk_bytenr = (u64)bio->bi_sector << 9; if (dio) offset = logical_offset; |