This is a note to let you know that I've just added the patch titled
block: make sure writesame bio is aligned with logical block size
to the 4.19-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-make-sure-writesame-bio-is-aligned-with-logical-block-size.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 34ffec60b27aa81d04e274e71e4c6ef740f75fc7 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@xxxxxxxxxx>
Date: Mon, 29 Oct 2018 20:57:19 +0800
Subject: block: make sure writesame bio is aligned with logical block size
From: Ming Lei <ming.lei@xxxxxxxxxx>
commit 34ffec60b27aa81d04e274e71e4c6ef740f75fc7 upstream.
Obviously the created writesame bio has to be aligned with logical block
size, and use bio_allowed_max_sectors() to retrieve this number.
Cc: stable@xxxxxxxxxxxxxxx
Cc: Mike Snitzer <snitzer@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Xiao Ni <xni@xxxxxxxxxx>
Cc: Mariusz Dabrowski <mariusz.dabrowski@xxxxxxxxx>
Fixes: b49a0871be31a745b2ef ("block: remove split code in blkdev_issue_{discard,write_same}")
Tested-by: Rui Salvaterra <rsalvaterra@xxxxxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
block/blk-lib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -161,7 +161,7 @@ static int __blkdev_issue_write_same(str
return -EOPNOTSUPP;
/* Ensure that max_write_same_sectors doesn't overflow bi_size */
- max_write_same_sectors = UINT_MAX >> 9;
+ max_write_same_sectors = bio_allowed_max_sectors(q);
while (nr_sects) {
bio = next_bio(bio, 1, gfp_mask);
Patches currently in stable-queue which might be from ming.lei@xxxxxxxxxx are
queue-4.19/block-make-sure-discard-bio-is-aligned-with-logical-block-size.patch
queue-4.19/block-make-sure-writesame-bio-is-aligned-with-logical-block-size.patch
