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From: Jens Axboe <axboe@kernel.dk>
To: linux-fsdevel@vger.kernel.org
Cc: viro@zeniv.linux.org.uk, akpm@linux-foundation.org,
	Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 3/3] ext4: readpages() should submit IO as read-ahead
Date: Thu, 24 May 2018 10:02:54 -0600	[thread overview]
Message-ID: <1527177774-21414-4-git-send-email-axboe@kernel.dk> (raw)
In-Reply-To: <1527177774-21414-1-git-send-email-axboe@kernel.dk>

a_ops->readpages() is only ever used for read-ahead. Ensure that we
pass this information down to the block layer.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 fs/ext4/readpage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 9ffa6fad18db..92b28273b223 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -259,7 +259,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
 			bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9);
 			bio->bi_end_io = mpage_end_io;
 			bio->bi_private = ctx;
-			bio_set_op_attrs(bio, REQ_OP_READ, 0);
+			bio_set_op_attrs(bio, REQ_OP_READ, REQ_RAHEAD);
 		}
 
 		length = first_hole << blkbits;
-- 
2.7.4

  parent reply	other threads:[~2018-05-24 16:03 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-24 16:02 [PATCHSET 0/3] Submit ->readpages() " Jens Axboe
2018-05-24 16:02 ` [PATCH 1/3] mpage: mpage_readpages() should submit " Jens Axboe
2018-05-24 19:43   ` Andrew Morton
2018-05-24 19:57     ` Matthew Wilcox
2018-05-24 20:24       ` Jens Axboe
2018-05-29 14:36     ` Jens Axboe
2018-05-29 21:59       ` Andrew Morton
2018-05-29 22:18         ` Jens Axboe
2018-05-29 22:37           ` Jens Axboe
2018-05-24 16:02 ` [PATCH 2/3] btrfs: readpages() " Jens Axboe
2018-05-24 16:02 ` Jens Axboe [this message]
2018-05-24 20:47   ` [PATCH 3/3] ext4: " Theodore Y. Ts'o
2018-05-24 20:53     ` Jens Axboe
2018-05-24 21:05       ` Jens Axboe
2018-05-25  8:32 ` [PATCHSET 0/3] Submit ->readpages() " Christoph Hellwig
2018-05-25 14:21   ` Jens Axboe

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