[PATCH 5.9 244/252] blk-cgroup: fix a hd_struct leak in blkcg_fill_root_iostats

From: Christoph Hellwig hch@lst.de

commit b7131ee0bac5e5df73e4098e77bbddb3a31d06ff upstream.

disk_get_part needs to be paired with a disk_put_part.

Cc: stable@vger.kernel.org Fixes: ef45fe470e1 ("blk-cgroup: show global disk stats in root cgroup io.stat") Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- block/blk-cgroup.c | 1 + 1 file changed, 1 insertion(+)

--- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -840,6 +840,7 @@ static void blkcg_fill_root_iostats(void blkg_iostat_set(&blkg->iostat.cur, &tmp); u64_stats_update_end(&blkg->iostat.sync); } + disk_put_part(part); } }