diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-11-02 16:18:21 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-11-16 17:44:26 +0100 |
| commit | f25cf75a452150c243f74ab1f1836822137d5d2c (patch) | |
| tree | d6d86ede5e7ba7bad967309d25ed564595de3e04 /block/bio.c | |
| parent | bio: don't rob starving biosets of bios (diff) | |
| download | linux-f25cf75a452150c243f74ab1f1836822137d5d2c.tar.xz linux-f25cf75a452150c243f74ab1f1836822137d5d2c.zip | |
bio: split pcpu cache part of bio_put into a helper
Extract a helper out of bio_put for recycling into percpu caches.
It's a preparation patch without functional changes.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e97ab2026a89098ee1bfdd09bcb9451fced95f87.1667384020.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bio.c')
| -rw-r--r-- | block/bio.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/block/bio.c b/block/bio.c index 91f4a6926a1b..0d03b8d36447 100644 --- a/block/bio.c +++ b/block/bio.c @@ -727,6 +727,28 @@ static void bio_alloc_cache_destroy(struct bio_set *bs) bs->cache = NULL; } +static inline void bio_put_percpu_cache(struct bio *bio) +{ + struct bio_alloc_cache *cache; + + cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu()); + bio_uninit(bio); + + if ((bio->bi_opf & REQ_POLLED) && !WARN_ON_ONCE(in_interrupt())) { + bio->bi_next = cache->free_list; + cache->free_list = bio; + cache->nr++; + } else { + put_cpu(); + bio_free(bio); + return; + } + + if (cache->nr > ALLOC_CACHE_MAX + ALLOC_CACHE_SLACK) + bio_alloc_cache_prune(cache, ALLOC_CACHE_SLACK); + put_cpu(); +} + /** * bio_put - release a reference to a bio * @bio: bio to release reference to @@ -742,20 +764,10 @@ void bio_put(struct bio *bio) if (!atomic_dec_and_test(&bio->__bi_cnt)) return; } - - if ((bio->bi_opf & REQ_ALLOC_CACHE) && !WARN_ON_ONCE(in_interrupt())) { - struct bio_alloc_cache *cache; - - bio_uninit(bio); - cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu()); - bio->bi_next = cache->free_list; - cache->free_list = bio; - if (++cache->nr > ALLOC_CACHE_MAX + ALLOC_CACHE_SLACK) - bio_alloc_cache_prune(cache, ALLOC_CACHE_SLACK); - put_cpu(); - } else { + if (bio->bi_opf & REQ_ALLOC_CACHE) + bio_put_percpu_cache(bio); + else bio_free(bio); - } } EXPORT_SYMBOL(bio_put); |