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authorMing Lei <ming.lei@redhat.com>2018-10-29 20:57:19 +0800
committerJens Axboe <axboe@kernel.dk>2018-11-09 06:23:18 -0700
commit34ffec60b27aa81d04e274e71e4c6ef740f75fc7 (patch)
tree242e7545cc12a3db2cba1831e21280955808c5b8 /block/blk-lib.c
parentba5d73851e71847ba7f7f4c27a1a6e1f5ab91c79 (diff)
downloadlwn-34ffec60b27aa81d04e274e71e4c6ef740f75fc7.tar.gz
lwn-34ffec60b27aa81d04e274e71e4c6ef740f75fc7.zip
block: make sure writesame bio is aligned with logical block size
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>
Diffstat (limited to 'block/blk-lib.c')
-rw-r--r--block/blk-lib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c
index d58d5d87dd88..e8b3bb9bf375 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -149,7 +149,7 @@ static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
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 = blk_next_bio(bio, 1, gfp_mask);