Re: [RFC for-next v2 3/4] block/bio: add pcpu caching for non-polling bio_put

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On 10/20/22 09:31, Christoph Hellwig wrote:
+	unsigned long flags;
cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu());
  	bio_uninit(bio);
@@ -737,12 +776,15 @@ static inline void bio_put_percpu_cache(struct bio *bio)
  		cache->free_list = bio;
  		cache->nr++;
  	} else {
-		put_cpu();
-		bio_free(bio);
-		return;
+		local_irq_save(flags);
+		bio->bi_next = cache->free_list_irq;
+		cache->free_list_irq = bio;
+		cache->nr_irq++;
+		local_irq_restore(flags);
  	}

Ok, I guess with that my previous comments don't make quite
as much sense any more.  I think youcan keep flags local in

Yeah, a little bit of oracle coding

the branch here, though.

Not like it makes any difference but can move it

--
Pavel Begunkov



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