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authorChristoph Hellwig <hch@lst.de>2021-05-25 09:12:56 +0300
committerJens Axboe <axboe@kernel.dk>2021-06-01 16:44:32 +0300
commita8698707a1835be3abd12a3b28079a80999f8dee (patch)
treeaa913e2f7ea74fc5514d052b8bb4c89734dc031b /include/linux/genhd.h
parent210a6d756f20f33fc546ec8682a538fbcb84ee8e (diff)
downloadlinux-a8698707a1835be3abd12a3b28079a80999f8dee.tar.xz
block: move bd_mutex to struct gendisk
Replace the per-block device bd_mutex with a per-gendisk open_mutex, thus simplifying locking wherever we deal with partitions. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com> Link: https://lore.kernel.org/r/20210525061301.2242282-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/genhd.h')
-rw-r--r--include/linux/genhd.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 782f0171d104..1fabb1559110 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -154,6 +154,9 @@ struct gendisk {
#define GD_NEED_PART_SCAN 0
#define GD_READ_ONLY 1
#define GD_QUEUE_REF 2
+
+ struct mutex open_mutex; /* open/close mutex */
+
struct kobject *slave_dir;
struct timer_rand_state *random;