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authorJosef Bacik <jbacik@fb.com>2015-03-16 17:38:52 -0400
committerJosef Bacik <jbacik@fb.com>2015-03-17 16:36:31 -0400
commit6a3891c551268dd4ff0969b883c4c8b8d974db8f (patch)
treee9727d171e09a8468fc8ac759de743b84e018ad6 /fs/btrfs/extent-tree.c
parentbcb7e449ec6350121ac7ca138c0b050ba7caca47 (diff)
downloadtalos-obmc-linux-6a3891c551268dd4ff0969b883c4c8b8d974db8f.tar.gz
talos-obmc-linux-6a3891c551268dd4ff0969b883c4c8b8d974db8f.zip
Btrfs: add sanity test for outstanding_extents accounting
I introduced a regression wrt outstanding_extents accounting. These are tricky areas that aren't easily covered by xfstests as we could change MAX_EXTENT_SIZE at any time. So add sanity tests to cover the various conditions that are tricky in order to make sure we don't introduce regressions in the future. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 3ac3fefb1625..d1ca86ea9993 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5285,6 +5285,9 @@ void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes)
if (dropped > 0)
to_free += btrfs_calc_trans_metadata_size(root, dropped);
+ if (btrfs_test_is_dummy_root(root))
+ return;
+
trace_btrfs_space_reservation(root->fs_info, "delalloc",
btrfs_ino(inode), to_free, 0);
if (root->fs_info->quota_enabled) {
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