From: majianpeng <majianpeng@gmail.com>
To: Neil Brown <neilb@suse.de>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: [PATCH 1/2] md/raid5:Change the order of md_write_start() and chunk_aligned_read() in function make_request().
Date: Sat, 2 Jun 2012 16:15:57 +0800 [thread overview]
Message-ID: <201206021615544687310@gmail.com> (raw)
If exec chunk_aligned_read(),it did not neccessary to exec
md_write_start().
Signed-off-by: majianpeng <majianpeng@gmail.com>
---
drivers/md/raid5.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d267672..5653125 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3978,13 +3978,13 @@ static void make_request(struct mddev *mddev, struct bio * bi)
return;
}
- md_write_start(mddev, bi);
-
if (rw == READ &&
mddev->reshape_position == MaxSector &&
chunk_aligned_read(mddev,bi))
return;
+ md_write_start(mddev, bi);
+
logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1);
last_sector = bi->bi_sector + (bi->bi_size>>9);
bi->bi_next = NULL;
--
1.7.5.4
--------------
majianpeng
reply other threads:[~2012-06-02 8:15 UTC|newest]
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