Christoph Hellwig c2b4bb8cb3 block: fix locking for struct block_device size updates ... Two different callers use two different mutexes for updating the block device size, which obviously doesn't help to actually protect against concurrent updates from the different callers. In addition one of the locks, bd_mutex is rather prone to deadlocks with other parts of the block stack that use it for high level synchronization. Switch to using a new spinlock protecting just the size updates, as that is all we need, and make sure everyone does the update through the proper helper. This fixes a bug reported with the nvme revalidating disks during a hot removal operation, which can currently deadlock on bd_mutex. Reported-by: Xianting Tian <xianting_tian@126.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-09-01 16:49:25 -06:00
..
bcache	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
persistent-data	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
dm-bio-prison-v1.c
dm-bio-prison-v1.h
dm-bio-prison-v2.c
dm-bio-prison-v2.h
dm-bio-record.h
dm-bufio.c	dm bufio: do buffer cleanup from a workqueue	2020-07-20 11:17:43 -04:00
dm-builtin.c
dm-cache-background-tracker.c
dm-cache-background-tracker.h
dm-cache-block-types.h
dm-cache-metadata.c
dm-cache-metadata.h
dm-cache-policy-internal.h
dm-cache-policy-smq.c
dm-cache-policy.c
dm-cache-policy.h
dm-cache-target.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
dm-clone-metadata.c
dm-clone-metadata.h
dm-clone-target.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
dm-core.h
dm-crypt.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
dm-delay.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-dust.c	dm dust: add interface to list all badblocks	2020-07-20 11:17:41 -04:00
dm-ebs-target.c	dm ebs: Fix incorrect checking for REQ_OP_FLUSH	2020-08-04 16:01:40 -04:00
dm-era-target.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
dm-exception-store.c
dm-exception-store.h
dm-flakey.c
dm-historical-service-time.c	dm mpath: add Historical Service Time Path Selector	2020-05-15 10:29:36 -04:00
dm-init.c	dm init: Set file local variable static	2020-08-04 15:51:28 -04:00
dm-integrity.c	mm, treewide: rename kzfree() to kfree_sensitive()	2020-08-07 11:33:22 -07:00
dm-io.c	treewide: Remove uninitialized_var() usage	2020-07-16 12:35:15 -07:00
dm-ioctl.c	- DM multipath locking fixes around m->flags tests and improvements to	2020-08-07 13:08:09 -07:00
dm-kcopyd.c
dm-linear.c
dm-log-userspace-base.c
dm-log-userspace-transfer.c
dm-log-userspace-transfer.h
dm-log-writes.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-log.c
dm-mpath.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-queue-length.c	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-raid1.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-raid.c	- DM multipath locking fixes around m->flags tests and improvements to	2020-08-07 13:08:09 -07:00
dm-region-hash.c
dm-round-robin.c
dm-rq.c	- DM multipath locking fixes around m->flags tests and improvements to	2020-08-07 13:08:09 -07:00
dm-rq.h
dm-service-time.c	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-snap-persistent.c	Remove uninitialized_var() macro for v5.9-rc1	2020-08-04 13:49:43 -07:00
dm-snap-transient.c
dm-snap.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-stats.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-stats.h
dm-stripe.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-switch.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-sysfs.c
dm-table.c	for-5.9/block-merge-20200804	2020-08-05 11:12:34 -07:00
dm-target.c
dm-thin-metadata.c
dm-thin-metadata.h
dm-thin.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
dm-uevent.c
dm-uevent.h
dm-unstripe.c
dm-verity-fec.c	dm verity fec: fix hash block number in verity_fec_decode	2020-04-16 16:16:38 -04:00
dm-verity-fec.h
dm-verity-target.c	- DM multipath locking fixes around m->flags tests and improvements to	2020-08-07 13:08:09 -07:00
dm-verity-verify-sig.c
dm-verity-verify-sig.h	dm verity: Fix compilation warning	2020-08-04 15:48:13 -04:00
dm-verity.h	dm verity: add "panic_on_corruption" error handling mode	2020-07-13 11:47:33 -04:00
dm-writecache.c	powerpc updates for 5.9	2020-08-07 10:33:50 -07:00
dm-zero.c
dm-zoned-metadata.c	dm zoned: Fix zone reclaim trigger	2020-07-08 12:21:53 -04:00
dm-zoned-reclaim.c	dm zoned: Fix zone reclaim trigger	2020-07-08 12:21:53 -04:00
dm-zoned-target.c	for-5.9/block-20200802	2020-08-03 11:57:03 -07:00
dm-zoned.h	dm zoned: select reclaim zone based on device index	2020-06-05 14:59:53 -04:00
dm.c	block: fix locking for struct block_device size updates	2020-09-01 16:49:25 -06:00
dm.h	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
Kconfig	Replace HTTP links with HTTPS ones: LVM	2020-07-05 14:28:27 -06:00
Makefile	md: move the early init autodetect code to drivers/md/	2020-07-16 15:34:47 +02:00
md-autodetect.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
md-bitmap.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
md-bitmap.h
md-cluster.c	md-cluster: Fix potential error pointer dereference in resize_bitmaps()	2020-08-05 17:07:48 -07:00
md-cluster.h
md-faulty.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
md-linear.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
md-linear.h	md/raid1: Replace zero-length array with flexible-array	2020-05-13 12:02:23 -07:00
md-multipath.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
md-multipath.h
md.c	block-5.9-2020-08-14	2020-08-15 20:36:42 -07:00
md.h	Merge branch 'hch.init_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-08-07 09:40:34 -07:00
raid0.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
raid0.h
raid1-10.c
raid1.c	writeback: remove bdi->congested_fn	2020-07-08 17:20:46 -06:00
raid1.h	md/raid1: Replace zero-length array with flexible-array	2020-05-13 12:02:23 -07:00
raid5-cache.c	raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show	2020-08-02 23:03:52 -07:00
raid5-log.h
raid5-ppl.c	md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*	2020-07-21 17:18:12 -07:00
raid5.c	block-5.9-2020-08-28	2020-08-28 16:38:29 -07:00
raid5.h	A set of locking fixes and updates:	2020-08-10 19:07:44 -07:00
raid10.c	for-5.9/drivers-20200803	2020-08-05 10:51:40 -07:00
raid10.h	md/raid1: Replace zero-length array with flexible-array	2020-05-13 12:02:23 -07:00