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 2/6] fs: add kiocb alloc cache flag
Date: Thu, 12 Aug 2021 09:41:45 -0600 [thread overview]
Message-ID: <20210812154149.1061502-3-axboe@kernel.dk> (raw)
In-Reply-To: <20210812154149.1061502-1-axboe@kernel.dk>
If this kiocb can safely use the polled bio allocation cache, then this
flag must be set. Generally this can be set for polled IO, where we will
not see IRQ completions of the request.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
include/linux/fs.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 640574294216..0dcc5de779c9 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -319,6 +319,8 @@ enum rw_hint {
/* iocb->ki_waitq is valid */
#define IOCB_WAITQ (1 << 19)
#define IOCB_NOIO (1 << 20)
+/* can use bio alloc cache */
+#define IOCB_ALLOC_CACHE (1 << 21)
struct kiocb {
struct file *ki_filp;
--
2.32.0
next prev parent reply other threads:[~2021-08-12 15:41 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-12 15:41 [PATCHSET v5 0/6] Enable bio recycling for polled IO Jens Axboe
2021-08-12 15:41 ` [PATCH 1/6] bio: optimize initialization of a bio Jens Axboe
2021-08-12 16:16 ` Christoph Hellwig
2021-08-12 15:41 ` Jens Axboe [this message]
2021-08-12 16:20 ` [PATCH 2/6] fs: add kiocb alloc cache flag Christoph Hellwig
2021-08-12 15:41 ` [PATCH 3/6] bio: add allocation cache abstraction Jens Axboe
2021-08-12 16:32 ` Christoph Hellwig
2021-08-12 16:39 ` Jens Axboe
2021-08-12 15:41 ` [PATCH 4/6] block: clear BIO_PERCPU_CACHE flag if polling isn't supported Jens Axboe
2021-08-12 16:33 ` Christoph Hellwig
2021-08-12 17:31 ` Keith Busch
2021-08-12 17:41 ` Jens Axboe
2021-08-13 20:17 ` Keith Busch
2021-08-13 20:19 ` Jens Axboe
2021-08-13 20:31 ` Keith Busch
2021-08-13 20:33 ` 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
2021-08-12 15:41 ` [PATCH 6/6] block: use the percpu bio cache in __blkdev_direct_IO Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2021-08-11 19:35 [PATCHSET v4 0/6] Enable bio recycling for polled IO 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
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