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bcachefs: Improve bkey_cached_lock_for_evict()

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We don't need a write lock to check if a key is dirty.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-01-08 00:05:30 -05:00
parent c82ed3047b
commit 7af365eb36
1 changed files with 2 additions and 3 deletions
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5
fs/bcachefs/btree_key_cache.c
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@ -56,13 +56,12 @@ static bool bkey_cached_lock_for_evict(struct bkey_cached *ck)
if (!six_trylock_intent(&ck->c.lock))
return false;
if (!six_trylock_write(&ck->c.lock)) {
if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {
six_unlock_intent(&ck->c.lock);
return false;
}
if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {
six_unlock_write(&ck->c.lock);
if (!six_trylock_write(&ck->c.lock)) {
six_unlock_intent(&ck->c.lock);
return false;
}