Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 020/361] block: make sure writesame bio is aligned with logical block size | Date | Sun, 11 Nov 2018 14:16:07 -0800 |
| |
4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ming Lei <ming.lei@redhat.com>
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@vger.kernel.org Cc: Mike Snitzer <snitzer@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Xiao Ni <xni@redhat.com> Cc: Mariusz Dabrowski <mariusz.dabrowski@intel.com> Fixes: b49a0871be31a745b2ef ("block: remove split code in blkdev_issue_{discard,write_same}") Tested-by: Rui Salvaterra <rsalvaterra@gmail.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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);
| |