This is a note to let you know that I've just added the patch titled
block: fix blk_integrity_register to use template's interval_exp if not 0
to the 4.4-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:
block-fix-blk_integrity_register-to-use-template-s-interval_exp-if-not-0.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2859323e35ab5fc42f351fbda23ab544eaa85945 Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer@xxxxxxxxxx>
Date: Sat, 22 Apr 2017 17:22:09 -0400
Subject: block: fix blk_integrity_register to use template's interval_exp if not 0
From: Mike Snitzer <snitzer@xxxxxxxxxx>
commit 2859323e35ab5fc42f351fbda23ab544eaa85945 upstream.
When registering an integrity profile: if the template's interval_exp is
not 0 use it, otherwise use the ilog2() of logical block size of the
provided gendisk.
This fixes a long-standing DM linear target bug where it cannot pass
integrity data to the underlying device if its logical block size
conflicts with the underlying device's logical block size.
Reported-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Acked-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
block/blk-integrity.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -412,7 +412,8 @@ void blk_integrity_register(struct gendi
bi->flags = BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE |
template->flags;
- bi->interval_exp = ilog2(queue_logical_block_size(disk->queue));
+ bi->interval_exp = template->interval_exp ? :
+ ilog2(queue_logical_block_size(disk->queue));
bi->profile = template->profile ? template->profile : &nop_profile;
bi->tuple_size = template->tuple_size;
bi->tag_size = template->tag_size;
Patches currently in stable-queue which might be from snitzer@xxxxxxxxxx are
queue-4.4/block-fix-blk_integrity_register-to-use-template-s-interval_exp-if-not-0.patch
queue-4.4/dm-era-save-spacemap-metadata-root-after-the-pre-commit.patch