On 11/16/20 3:58 PM, Christoph Hellwig wrote:
bd_mutex is primarily used for synchronizing the block device open and
release path, which recurses from partitions to the whole disk device.
The fact that we have two locks makes life unnecessarily complex due
to lock order constrains. Replace the two levels of locking with a
single mutex in the gendisk structure.
Signed-off-by: Christoph Hellwig <h...@lst.de>
---
block/genhd.c | 7 ++--
block/ioctl.c | 4 +-
block/partitions/core.c | 22 +++++-----
drivers/block/loop.c | 14 +++----
drivers/block/xen-blkfront.c | 8 ++--
drivers/block/zram/zram_drv.c | 4 +-
drivers/block/zram/zram_drv.h | 2 +-
drivers/md/md.h | 7 +---
drivers/s390/block/dasd_genhd.c | 8 ++--
drivers/scsi/sd.c | 4 +-
fs/block_dev.c | 71 +++++++++++++++++----------------
fs/btrfs/volumes.c | 2 +-
fs/super.c | 8 ++--
include/linux/blk_types.h | 1 -
include/linux/genhd.h | 1 +
15 files changed, 80 insertions(+), 83 deletions(-)
Reviewed-by: Hannes Reinecke <h...@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
h...@suse.de +49 911 74053 688
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