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authorJosef Bacik <[email protected]>2024-05-07 14:12:11 -0400
committerDavid Sterba <[email protected]>2024-07-11 15:33:25 +0200
commitb4236703eb50d03db867ce080823f43c18257d80 (patch)
tree140ae310167b34e39ada8fff8b25ba615790f384
parenta580fb2c3479d993556e1c31b237c9e5be4944a3 (diff)
btrfs: handle errors from ref mods during UPDATE_BACKREF in walk_down_proc()
We have blanket BUG_ON(ret) after every one of these reference mod attempts, which is just incorrect. If we encounter any errors during walk_down_tree() we will abort, so abort on any one of these failures. Signed-off-by: Josef Bacik <[email protected]> Reviewed-by: David Sterba <[email protected]> Signed-off-by: David Sterba <[email protected]>
-rw-r--r--fs/btrfs/extent-tree.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 915ae708ebc7..53f12a12ee77 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5417,11 +5417,20 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
if (!(wc->flags[level] & flag)) {
BUG_ON(!path->locks[level]);
ret = btrfs_inc_ref(trans, root, eb, 1);
- BUG_ON(ret); /* -ENOMEM */
+ if (ret) {
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
ret = btrfs_dec_ref(trans, root, eb, 0);
- BUG_ON(ret); /* -ENOMEM */
+ if (ret) {
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
ret = btrfs_set_disk_extent_flags(trans, eb, flag);
- BUG_ON(ret); /* -ENOMEM */
+ if (ret) {
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
wc->flags[level] |= flag;
}