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authorFilipe Manana <fdmanana@suse.com>2023-06-08 13:27:46 +0300
committerDavid Sterba <dsterba@suse.com>2023-06-19 14:59:39 +0300
commit11d6ae03557e34dd2bc9e57d1a5139ab3c7be54f (patch)
tree83a2a791df72ec21d129f6543f276d560d38db7c /fs/btrfs
parenteced687e224eb3cc5a501cf53ad9291337c8dbc5 (diff)
downloadlinux-11d6ae03557e34dd2bc9e57d1a5139ab3c7be54f.tar.xz
btrfs: do not BUG_ON() on tree mod log failures at push_nodes_for_insert()
At push_nodes_for_insert(), instead of doing a BUG_ON() in case we fail to record tree mod log operations, do a transaction abort and return the error to the caller. There's really no need for the BUG_ON() as we can release all resources in this context, and we have to abort because other future tree searches that use the tree mod log (btrfs_search_old_slot()) may get inconsistent results if other operations modify the tree after that failure and before the tree mod log based search. Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/ctree.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index b643bd8656bf..dc60ece85664 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1308,7 +1308,12 @@ static noinline int push_nodes_for_insert(struct btrfs_trans_handle *trans,
btrfs_node_key(mid, &disk_key, 0);
ret = btrfs_tree_mod_log_insert_key(parent, pslot,
BTRFS_MOD_LOG_KEY_REPLACE);
- BUG_ON(ret < 0);
+ if (ret < 0) {
+ btrfs_tree_unlock(left);
+ free_extent_buffer(left);
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
btrfs_set_node_key(parent, &disk_key, pslot);
btrfs_mark_buffer_dirty(parent);
if (btrfs_header_nritems(left) > orig_slot) {
@@ -1363,7 +1368,12 @@ static noinline int push_nodes_for_insert(struct btrfs_trans_handle *trans,
btrfs_node_key(right, &disk_key, 0);
ret = btrfs_tree_mod_log_insert_key(parent, pslot + 1,
BTRFS_MOD_LOG_KEY_REPLACE);
- BUG_ON(ret < 0);
+ if (ret < 0) {
+ btrfs_tree_unlock(right);
+ free_extent_buffer(right);
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
btrfs_set_node_key(parent, &disk_key, pslot + 1);
btrfs_mark_buffer_dirty(parent);