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bcachefs: fix bch2_btree_key_cache_drop()

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When evicting, we shouldn't leave a pointer to the key cache entry lying
around - that screws up btree path asserts we're adding.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2024-12-21 04:14:28 -05:00
parent bc6fce7870
commit f908eacc34
1 changed files with 12 additions and 2 deletions
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14
fs/bcachefs/btree_key_cache.c
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@@ -613,8 +613,18 @@ void bch2_btree_key_cache_drop(struct btree_trans *trans,
bkey_cached_free(bc, ck);
mark_btree_node_locked(trans, path, 0, BTREE_NODE_UNLOCKED);
btree_path_set_dirty(path, BTREE_ITER_NEED_TRAVERSE);
path->should_be_locked = false;
struct btree_path *path2;
unsigned i;
trans_for_each_path(trans, path2, i)
if (path2->l[0].b == (void *) ck) {
__bch2_btree_path_unlock(trans, path2);
path2->l[0].b = ERR_PTR(-BCH_ERR_no_btree_node_drop);
path2->should_be_locked = false;
btree_path_set_dirty(path2, BTREE_ITER_NEED_TRAVERSE);
}
bch2_trans_verify_locks(trans);
}
static unsigned long bch2_btree_key_cache_scan(struct shrinker *shrink,