From: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Date: Tue, 27 Feb 2018 12:10:03 +0000 (+0800)
Subject: block: fix the count of PGPGOUT for WRITE_SAME
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=17644a0bbb190b6286106e98392f3d60ee020a23;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

block: fix the count of PGPGOUT for WRITE_SAME

commit 7c5a0dcf557c6511a61e092ba887de28882fe857 upstream.

The vm counters is counted in sectors, so we should do the conversation
in submit_bio.

Fixes: 74d46992e0d9 ("block: replace bi_bdev with a gendisk pointer and partitions index")
Cc: stable@vger.kernel.org
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/block/blk-core.c b/block/blk-core.c
index 95b7ea996ac2..c01f4907dbbc 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2277,7 +2277,7 @@ blk_qc_t submit_bio(struct bio *bio)
 		unsigned int count;
 
 		if (unlikely(bio_op(bio) == REQ_OP_WRITE_SAME))
-			count = queue_logical_block_size(bio->bi_disk->queue);
+			count = queue_logical_block_size(bio->bi_disk->queue) >> 9;
 		else
 			count = bio_sectors(bio);