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raid5: allow arbitrary max_hw_sectors

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raid5 will split bio to proper size internally, there is no point to use
underlayer disk's max_hw_sectors. In my qemu system, without the change,
the raid5 only receives 128k size bio, which reduces the chance of bio
merge sending to underlayer disks.

Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Shaohua Li 2016-09-08 10:49:06 -07:00
parent 694dda62d2
commit 1dffddddd8
1 changed files with 2 additions and 0 deletions
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2
drivers/md/raid5.c
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@ -7066,6 +7066,8 @@ static int raid5_run(struct mddev *mddev)
else
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD,
mddev->queue);
blk_queue_max_hw_sectors(mddev->queue, UINT_MAX);
}
if (journal_dev) {