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authorChristoph Hellwig <hch@lst.de>2021-08-09 17:17:43 +0300
committerJens Axboe <axboe@kernel.dk>2021-08-09 20:53:23 +0300
commitedb0872f44ec9976ea6d052cb4b93cd2d23ac2ba (patch)
tree077c52abab520da5223f99729c41dc0119f73b4b /block/blk-cgroup.c
parent1008162b2782a3624d12b0aee8da58bc75d12e19 (diff)
downloadlinux-edb0872f44ec9976ea6d052cb4b93cd2d23ac2ba.tar.xz
block: move the bdi from the request_queue to the gendisk
The backing device information only makes sense for file system I/O, and thus belongs into the gendisk and not the lower level request_queue structure. Move it there. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20210809141744.1203023-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
-rw-r--r--block/blk-cgroup.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 575d7a2e7203..db034e35ae20 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -489,10 +489,9 @@ static int blkcg_reset_stats(struct cgroup_subsys_state *css,
const char *blkg_dev_name(struct blkcg_gq *blkg)
{
- /* some drivers (floppy) instantiate a queue w/o disk registered */
- if (blkg->q->backing_dev_info->dev)
- return bdi_dev_name(blkg->q->backing_dev_info);
- return NULL;
+ if (!queue_has_disk(blkg->q) || !queue_to_disk(blkg->q)->bdi->dev)
+ return NULL;
+ return bdi_dev_name(queue_to_disk(blkg->q)->bdi);
}
/**