bcachefs: fix the count of nr_freed_pcpu after changing bc->freed_nonpcpu list

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When allocating bkey_cached from bc->freed_pcpu list, it missed
decreasing the count of nr_freed_pcpu which would cause the mismatch
between the value of nr_freed_pcpu and the list items. This problem
also exists in moving new bkey_cached to bc->freed_pcpu list.
If these happened, the bug info may appear in
bch2_fs_btree_key_cache_exit by the follow code:

   BUG_ON(list_count_nodes(&bc->freed_pcpu) != bc->nr_freed_pcpu);
   BUG_ON(list_count_nodes(&bc->freed_nonpcpu) != bc->nr_freed_nonpcpu);

Fixes: c65c13f0ea ("bcachefs: Run btree key cache shrinker less aggressively")
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Hongbo Li 2024-03-26 12:04:56 +08:00 • committed by Kent Overstreet

parent 30e615a2ce

commit 09e913f582

1 changed files with 2 additions and 0 deletions

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fs/bcachefs/btree_key_cache.c

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