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 5/6] io_uring: enable use of bio alloc cache
Date: Wed, 11 Aug 2021 13:35:32 -0600 [thread overview]
Message-ID: <20210811193533.766613-6-axboe@kernel.dk> (raw)
In-Reply-To: <20210811193533.766613-1-axboe@kernel.dk>
Mark polled IO as being safe for dipping into the bio allocation
cache, in case the targeted bio_set has it enabled.
This brings an IOPOLL gen2 Optane QD=128 workload from ~3.0M IOPS to
~3.3M IOPS.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index bd3f8529fe6f..00da7bdd2b53 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2667,7 +2667,7 @@ static int io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe)
!kiocb->ki_filp->f_op->iopoll)
return -EOPNOTSUPP;
- kiocb->ki_flags |= IOCB_HIPRI;
+ kiocb->ki_flags |= IOCB_HIPRI | IOCB_ALLOC_CACHE;
kiocb->ki_complete = io_complete_rw_iopoll;
req->iopoll_completed = 0;
} else {
--
2.32.0
next prev parent reply other threads:[~2021-08-11 19:35 UTC|newest]
Thread overview: 20+ 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 ` Jens Axboe [this message]
2021-08-11 19:35 ` [PATCH 6/6] block: enable use of bio allocation cache Jens Axboe
2021-08-12 7:04 ` Christoph Hellwig
2021-08-12 14:52 ` Jens Axboe
2021-08-12 15:41 [PATCHSET v5 0/6] Enable bio recycling for polled IO Jens Axboe
2021-08-12 15:41 ` [PATCH 5/6] io_uring: enable use of bio alloc cache Jens Axboe
2021-08-12 16:39 ` Christoph Hellwig
2021-08-12 16:46 ` Jens Axboe
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