[PATCH] md/raid0: attach correct cgroup info in bio
From: Shaohua Li <shli@kernel.org>
Date: 2017-08-18 18:59:07
Subsystem:
block layer, software raid (multiple disks) support, the rest · Maintainers:
Jens Axboe, Song Liu, Yu Kuai, Linus Torvalds
From: Shaohua Li <redacted> The discard bio doesn't attach the original bio cgroup info. Normal bio is cloned, so is fine. Signed-off-by: Shaohua Li <redacted> --- block/bio.c | 2 +- drivers/md/raid0.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/block/bio.c b/block/bio.c
index 9a63597aaacc..51189a1d9009 100644
--- a/block/bio.c
+++ b/block/bio.c@@ -2085,7 +2085,7 @@ void bio_clone_blkcg_association(struct bio *dst, struct bio *src) if (src->bi_css) WARN_ON(bio_associate_blkcg(dst, src->bi_css)); } - +EXPORT_SYMBOL_GPL(bio_clone_blkcg_association); #endif /* CONFIG_BLK_CGROUP */ static void __init biovec_init_slabs(void)
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 94d9ae9b0fd0..6fb81704aff4 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c@@ -539,6 +539,7 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio) !discard_bio) continue; bio_chain(discard_bio, bio); + bio_clone_blkcg_association(discard_bio, bio); if (mddev->gendisk) trace_block_bio_remap(bdev_get_queue(rdev->bdev), discard_bio, disk_devt(mddev->gendisk),
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2.11.0