#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/scatterlist.h>
+#include <linux/blk-cgroup.h>
#include <trace/events/block.h>
static inline int ll_new_hw_segment(struct request *req, struct bio *bio,
unsigned int nr_phys_segs)
{
+ if (!blk_cgroup_mergeable(req, bio))
+ goto no_merge;
+
if (blk_integrity_merge_bio(req->q, req, bio) == false)
goto no_merge;
if (total_phys_segments > blk_rq_get_max_segments(req))
return 0;
+ if (!blk_cgroup_mergeable(req, next->bio))
+ return 0;
+
if (blk_integrity_merge_rq(q, req, next) == false)
return 0;
if (rq->rq_disk != bio->bi_bdev->bd_disk)
return false;
+ /* don't merge across cgroup boundaries */
+ if (!blk_cgroup_mergeable(rq, bio))
+ return false;
+
/* only merge integrity protected bio into ditto rq */
if (blk_integrity_merge_bio(rq->q, rq, bio) == false)
return false;