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From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 01/12] block: read-ahead submission should imply no-wait as well
Date: Sun, 24 May 2020 13:21:55 -0600 [thread overview]
Message-ID: <20200524192206.4093-2-axboe@kernel.dk> (raw)
In-Reply-To: <20200524192206.4093-1-axboe@kernel.dk>
As read-ahead is opportunistic, don't block for request allocation.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
include/linux/blk_types.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index ccb895f911b1..c296463c15eb 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -374,7 +374,8 @@ enum req_flag_bits {
#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY)
#define REQ_FUA (1ULL << __REQ_FUA)
#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
-#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
+#define REQ_RAHEAD \
+ ((1ULL << __REQ_RAHEAD) | (1ULL << __REQ_NOWAIT))
#define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND)
#define REQ_NOWAIT (1ULL << __REQ_NOWAIT)
#define REQ_CGROUP_PUNT (1ULL << __REQ_CGROUP_PUNT)
--
2.26.2
next prev parent reply other threads:[~2020-05-24 19:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-24 19:21 [PATCHSET v4 0/12] Add support for async buffered reads Jens Axboe
2020-05-24 19:21 ` Jens Axboe [this message]
2020-05-24 19:21 ` [PATCH 02/12] mm: allow read-ahead with IOCB_NOWAIT set Jens Axboe
2020-05-24 19:21 ` [PATCH 03/12] mm: abstract out wake_page_match() from wake_page_function() Jens Axboe
2020-05-24 19:21 ` [PATCH 04/12] mm: add support for async page locking Jens Axboe
2020-05-24 19:21 ` [PATCH 05/12] mm: support async buffered reads in generic_file_buffered_read() Jens Axboe
2020-05-24 19:22 ` [PATCH 06/12] fs: add FMODE_BUF_RASYNC Jens Axboe
2020-05-24 19:22 ` [PATCH 07/12] ext4: flag as supporting buffered async reads Jens Axboe
2020-05-24 19:22 ` [PATCH 08/12] block: flag block devices as supporting IOCB_WAITQ Jens Axboe
2020-05-24 19:22 ` [PATCH 09/12] xfs: flag files as supporting buffered async reads Jens Axboe
2020-05-24 19:22 ` [PATCH 10/12] btrfs: " Jens Axboe
2020-05-24 19:22 ` [PATCH 11/12] mm: add kiocb_wait_page_queue_init() helper Jens Axboe
2020-05-24 19:22 ` [PATCH 12/12] io_uring: support true async buffered reads, if file provides it Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2020-05-26 19:51 [PATCHSET v5 0/12] Add support for async buffered reads Jens Axboe
2020-05-26 19:51 ` [PATCH 01/12] block: read-ahead submission should imply no-wait as well Jens Axboe
2020-05-23 18:57 [PATCHSET v2 0/12] Add support for async buffered reads Jens Axboe
2020-05-23 18:57 ` [PATCH 01/12] block: read-ahead submission should imply no-wait as well Jens Axboe
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