From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org
Cc: linux-block@vger.kernel.org, hch@infradead.org,
Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 6/6] block: enable use of bio allocation cache
Date: Wed, 11 Aug 2021 13:35:33 -0600 [thread overview]
Message-ID: <20210811193533.766613-7-axboe@kernel.dk> (raw)
In-Reply-To: <20210811193533.766613-1-axboe@kernel.dk>
Initialize the bio_set used for IO with per-cpu bio caching enabled,
and use the new bio_alloc_kiocb() helper to dip into that cache.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/block_dev.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 9ef4f1fc2cb0..798bb9d8f533 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -385,7 +385,7 @@ static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
(bdev_logical_block_size(bdev) - 1))
return -EINVAL;
- bio = bio_alloc_bioset(GFP_KERNEL, nr_pages, &blkdev_dio_pool);
+ bio = bio_alloc_kiocb(iocb, GFP_KERNEL, nr_pages, &blkdev_dio_pool);
dio = container_of(bio, struct blkdev_dio, bio);
dio->is_sync = is_sync = is_sync_kiocb(iocb);
@@ -513,7 +513,9 @@ blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
static __init int blkdev_init(void)
{
- return bioset_init(&blkdev_dio_pool, 4, offsetof(struct blkdev_dio, bio), BIOSET_NEED_BVECS);
+ return bioset_init(&blkdev_dio_pool, 4,
+ offsetof(struct blkdev_dio, bio),
+ BIOSET_NEED_BVECS|BIOSET_PERCPU_CACHE);
}
module_init(blkdev_init);
--
2.32.0
next prev parent reply other threads:[~2021-08-11 19:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-11 19:35 [PATCHSET v4 0/6] Enable bio recycling for polled IO Jens Axboe
2021-08-11 19:35 ` [PATCH 1/6] bio: optimize initialization of a bio Jens Axboe
2021-08-12 6:51 ` Christoph Hellwig
2021-08-12 15:29 ` Jens Axboe
2021-08-11 19:35 ` [PATCH 2/6] fs: add kiocb alloc cache flag Jens Axboe
2021-08-12 6:54 ` Christoph Hellwig
2021-08-12 14:52 ` Jens Axboe
2021-08-11 19:35 ` [PATCH 3/6] bio: add allocation cache abstraction Jens Axboe
2021-08-12 7:01 ` Christoph Hellwig
2021-08-12 15:08 ` Jens Axboe
2021-08-12 15:18 ` Christoph Hellwig
2021-08-12 15:26 ` Jens Axboe
2021-08-11 19:35 ` [PATCH 4/6] block: clear BIO_PERCPU_CACHE flag if polling isn't supported Jens Axboe
2021-08-11 19:35 ` [PATCH 5/6] io_uring: enable use of bio alloc cache Jens Axboe
2021-08-11 19:35 ` Jens Axboe [this message]
2021-08-12 7:04 ` [PATCH 6/6] block: enable use of bio allocation cache Christoph Hellwig
2021-08-12 14:52 ` Jens Axboe
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