move bd_mutex to the gendisk (resend)
From: Christoph Hellwig <hch@lst.de>
Date: 2021-05-12 06:19:11
Also in:
linux-block, linux-s390, linux-scsi
Hi all, this series first cleans up gendisk allocation in the md driver to remove the ERESTARTSYS hack in blkdev_get, then further refactors blkdev_get and then finally moves bd_mutex into the gendisk as having separate locks for the whole device vs partitions just complicates locking in places that add an remove partitions a lot. Diffstat: Documentation/filesystems/locking.rst | 2 block/genhd.c | 59 +++------ block/ioctl.c | 2 block/partitions/core.c | 45 +++---- drivers/block/loop.c | 14 +- drivers/block/xen-blkfront.c | 8 - drivers/block/zram/zram_drv.c | 18 +-- drivers/block/zram/zram_drv.h | 2 drivers/md/md.h | 6 - drivers/s390/block/dasd_genhd.c | 8 - drivers/scsi/sd.c | 4 fs/block_dev.c | 204 ++++++++++++++++------------------ fs/btrfs/volumes.c | 2 fs/super.c | 8 - include/linux/blk_types.h | 4 include/linux/genhd.h | 6 - init/do_mounts.c | 10 - 17 files changed, 184 insertions(+), 218 deletions(-)