This is a note to let you know that I've just added the patch titled

block: fix the count of PGPGOUT for WRITE_SAME

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: block-fix-the-count-of-pgpgout-for-write_same.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 7c5a0dcf557c6511a61e092ba887de28882fe857 Mon Sep 17 00:00:00 2001

From: Jiufei Xue jiufei.xue@linux.alibaba.com Date: Tue, 27 Feb 2018 20:10:03 +0800 Subject: block: fix the count of PGPGOUT for WRITE_SAME

From: Jiufei Xue jiufei.xue@linux.alibaba.com

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

--- block/blk-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/block/blk-core.c +++ b/block/blk-core.c @@ -2401,7 +2401,7 @@ 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);

Patches currently in stable-queue which might be from jiufei.xue@linux.alibaba.com are

queue-4.15/block-fix-the-count-of-pgpgout-for-write_same.patch