bcachefs: Fix bch2_btree_path_traverse_all()

We need to take a ref on a path while we're traversing it: this fixes a
bug with paths getting reused while being traversed, in the key cache
fill code.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-01-08 00:04:30 -05:00
parent ee94c413a7
commit c82ed3047b

View File

@ -999,7 +999,10 @@ retry_all:
* the same position:
*/
if (path->uptodate) {
__btree_path_get(path, false);
ret = btree_path_traverse_one(trans, path, 0, _THIS_IP_);
__btree_path_put(path, false);
if (bch2_err_matches(ret, BCH_ERR_transaction_restart) ||
ret == -ENOMEM)
goto retry_all;