This is a note to let you know that I've just added the patch titled
md/raid0: apply base queue limits *before* disk_stack_limits
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
md-raid0-apply-base-queue-limits-before-disk_stack_limits.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 66eefe5de11db1e0d8f2edc3880d50e7c36a9d43 Mon Sep 17 00:00:00 2001
From: NeilBrown <[email protected]>
Date: Thu, 24 Sep 2015 15:47:47 +1000
Subject: md/raid0: apply base queue limits *before* disk_stack_limits
From: NeilBrown <[email protected]>
commit 66eefe5de11db1e0d8f2edc3880d50e7c36a9d43 upstream.
Calling e.g. blk_queue_max_hw_sectors() after calls to
disk_stack_limits() discards the settings determined by
disk_stack_limits().
So we need to make those calls first.
Fixes: 199dc6ed5179 ("md/raid0: update queue parameter in a safer location.")
Reported-by: Jes Sorensen <[email protected]>
Signed-off-by: NeilBrown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/md/raid0.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -431,12 +431,6 @@ static int raid0_run(struct mddev *mddev
struct md_rdev *rdev;
bool discard_supported = false;
- rdev_for_each(rdev, mddev) {
- disk_stack_limits(mddev->gendisk, rdev->bdev,
- rdev->data_offset << 9);
- if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
- discard_supported = true;
- }
blk_queue_max_hw_sectors(mddev->queue, mddev->chunk_sectors);
blk_queue_max_write_same_sectors(mddev->queue,
mddev->chunk_sectors);
blk_queue_max_discard_sectors(mddev->queue,
mddev->chunk_sectors);
@@ -445,6 +439,12 @@ static int raid0_run(struct mddev *mddev
blk_queue_io_opt(mddev->queue,
(mddev->chunk_sectors << 9) *
mddev->raid_disks);
+ rdev_for_each(rdev, mddev) {
+ disk_stack_limits(mddev->gendisk, rdev->bdev,
+ rdev->data_offset << 9);
+ if (blk_queue_discard(bdev_get_queue(rdev->bdev)))
+ discard_supported = true;
+ }
if (!discard_supported)
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD,
mddev->queue);
else
Patches currently in stable-queue which might be from [email protected] are
queue-4.1/md-raid0-update-queue-parameter-in-a-safer-location.patch
queue-4.1/md-raid0-apply-base-queue-limits-before-disk_stack_limits.patch
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