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block: make sure writesame bio is aligned with logical block size
commit34ffec60b2
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:b49a0871be
("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>
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@ -161,7 +161,7 @@ static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
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return -EOPNOTSUPP;
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/* Ensure that max_write_same_sectors doesn't overflow bi_size */
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max_write_same_sectors = UINT_MAX >> 9;
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max_write_same_sectors = bio_allowed_max_sectors(q);
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while (nr_sects) {
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bio = next_bio(bio, 1, gfp_mask);
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