From: Jens Axboe <[email protected]>
To: [email protected]
Cc: [email protected], [email protected],
[email protected], Jens Axboe <[email protected]>
Subject: [PATCH 01/11] block: read-ahead submission should imply no-wait as well
Date: Fri, 22 May 2020 19:50:39 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
As read-ahead is opportunistic, don't block for request allocation.
Signed-off-by: Jens Axboe <[email protected]>
---
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:[~2020-05-23 1:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-23 1:50 [PATCHSET v2 RFC 0/11] Add support for async buffered reads Jens Axboe
2020-05-23 1:50 ` Jens Axboe [this message]
2020-05-23 1:50 ` [PATCH 02/11] mm: allow read-ahead with IOCB_NOWAIT set Jens Axboe
2020-05-23 1:50 ` [PATCH 03/11] mm: add support for async page locking Jens Axboe
2020-05-23 1:50 ` [PATCH 04/11] mm: support async buffered reads in generic_file_buffered_read() Jens Axboe
2020-05-23 1:50 ` [PATCH 05/11] fs: add FMODE_BUF_RASYNC Jens Axboe
2020-05-23 1:50 ` [PATCH 06/11] ext4: flag as supporting buffered async reads Jens Axboe
2020-05-23 1:50 ` [PATCH 07/11] block: flag block devices as supporting IOCB_WAITQ Jens Axboe
2020-05-23 1:50 ` [PATCH 08/11] xfs: flag files as supporting buffered async reads Jens Axboe
2020-05-23 1:50 ` [PATCH 09/11] btrfs: " Jens Axboe
2020-05-23 1:50 ` [PATCH 10/11] mm: add kiocb_wait_page_async_init() helper Jens Axboe
2020-05-23 1:50 ` [PATCH 11/11] io_uring: support true async buffered reads, if file provides it Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2020-05-22 20:23 [PATCHSET RFC 0/11] Add support for async buffered reads Jens Axboe
2020-05-22 20:23 ` [PATCH 01/11] block: read-ahead submission should imply no-wait as well Jens Axboe
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