author: Linus Torvalds <torvalds@linux-foundation.org> 2021-05-22 07:40:34 -1000
committer: Linus Torvalds <torvalds@linux-foundation.org> 2021-05-22 07:40:34 -1000
commit: 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c
parent: b9231dfbcbc0034cf333fee33c190853daee48c0
Commit Summary:
Diffstat:
1 file changed, 1 insertion, 10 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 39ca97b0edc6..9f8cb7beaad1 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -29,8 +29,6 @@
static struct kobject *block_depr;
-DECLARE_RWSEM(bdev_lookup_sem);
-
/* for extended dynamic devt allocation, currently only one major is used */
#define NR_EXT_DEVT (1 << MINORBITS)
static DEFINE_IDA(ext_devt_ida);
@@ -609,13 +607,8 @@ void del_gendisk(struct gendisk *disk)
blk_integrity_del(disk);
disk_del_events(disk);
- /*
- * Block lookups of the disk until all bdevs are unhashed and the
- * disk is marked as dead (GENHD_FL_UP cleared).
- */
- down_write(&bdev_lookup_sem);
-
mutex_lock(&disk->part0->bd_mutex);
+ disk->flags &= ~GENHD_FL_UP;
blk_drop_partitions(disk);
mutex_unlock(&disk->part0->bd_mutex);
@@ -629,8 +622,6 @@ void del_gendisk(struct gendisk *disk)
remove_inode_hash(disk->part0->bd_inode);
set_capacity(disk, 0);
- disk->flags &= ~GENHD_FL_UP;
- up_write(&bdev_lookup_sem);
if (!(disk->flags & GENHD_FL_HIDDEN)) {
sysfs_remove_link(&disk_to_dev(disk)->kobj, "bdi");