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94e76572b5
linux/drivers/md
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Mikulas Patocka 94e76572b5 dm snapshot: only take lock for statustype info not table 
Take snapshot lock only for STATUSTYPE_INFO, not STATUSTYPE_TABLE.

Commit 4c6fff445d
(dm-snapshot-lock-snapshot-while-supplying-status.patch)
introduced this use of the lock, but userspace applications using
libdevmapper have been found to request STATUSTYPE_TABLE while the device
is suspended and the lock is already held, leading to deadlock.  Since
the lock is not necessary in this case, don't try to take it.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-12-10 23:51:53 +00:00
..
raid6test md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
.gitignore
bitmap.c md: remove clumsy usage of do_sync_mapping_range from bitmap code 2009-10-16 15:56:01 +11:00
bitmap.h md: move headers out of include/linux/raid/ 2009-03-31 14:27:03 +11:00
dm-bio-record.h dm: preserve bi_io_vec when resubmitting bios 2009-04-02 19:55:23 +01:00
dm-crypt.c tree-wide: fix a very frequent spelling mistake 2009-11-09 09:40:54 +01:00
dm-delay.c dm table: pass correct dev area size to device_area_is_valid 2009-07-23 20:30:42 +01:00
dm-exception-store.c dm exception store: free tmp_store on persistent flag error 2009-12-10 23:51:52 +00:00
dm-exception-store.h dm snapshot: use unsigned integer chunk size 2009-10-16 23:18:17 +01:00
dm-io.c dm io: retry after barrier error 2009-06-22 10:12:26 +01:00
dm-ioctl.c dm: avoid _hash_lock deadlock 2009-12-10 23:51:52 +00:00
dm-kcopyd.c dm kcopyd: fix callback race 2009-04-09 00:27:17 +01:00
dm-linear.c dm table: pass correct dev area size to device_area_is_valid 2009-07-23 20:30:42 +01:00
dm-log-userspace-base.c dm log: userspace fix incorrect luid cast in userspace_ctr 2009-10-16 23:18:15 +01:00
dm-log-userspace-transfer.c dm/connector: Only process connector packages from privileged processes 2009-10-02 10:54:10 -07:00
dm-log-userspace-transfer.h dm log: userspace add luid to distinguish between concurrent log instances 2009-09-04 20:40:34 +01:00
dm-log.c dm log: fix create_log_context to use logical_block_size of log device 2009-06-22 10:12:33 +01:00
dm-mpath.c [SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronous 2009-12-04 12:00:46 -06:00
dm-mpath.h dm mpath: remove is_active from struct dm_path 2008-10-10 13:36:58 +01:00
dm-path-selector.c dm: path selector use module refcount directly 2009-04-02 19:55:27 +01:00
dm-path-selector.h dm mpath: add start_io and nr_bytes to path selectors 2009-06-22 10:12:27 +01:00
dm-queue-length.c dm mpath: add queue length load balancer 2009-06-22 10:12:27 +01:00
dm-raid1.c bio: first step in sanitizing the bio->bi_rw flag testing 2009-09-11 14:33:31 +02:00
dm-region-hash.c dm raid1: keep retrying alloc if mempool_alloc failed 2009-06-22 10:12:13 +01:00
dm-round-robin.c dm mpath: add start_io and nr_bytes to path selectors 2009-06-22 10:12:27 +01:00
dm-service-time.c dm mpath: add service time load balancer 2009-06-22 10:12:28 +01:00
dm-snap-persistent.c dm snapshot: use unsigned integer chunk size 2009-10-16 23:18:17 +01:00
dm-snap-transient.c dm snapshot: move status to exception store 2009-04-02 19:55:35 +01:00
dm-snap.c dm snapshot: only take lock for statustype info not table 2009-12-10 23:51:53 +00:00
dm-stripe.c block: Optimal I/O limit wrapper 2009-09-14 08:24:52 +02:00
dm-sysfs.c dm: sysfs add empty release function to avoid debug warning 2009-12-10 23:51:53 +00:00
dm-table.c dm stripe: expose correct io hints 2009-09-04 20:40:25 +01:00
dm-target.c dm target: remove struct tt_internal 2009-04-02 19:55:28 +01:00
dm-uevent.c dm: avoid _hash_lock deadlock 2009-12-10 23:51:52 +00:00
dm-uevent.h dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-zero.c dm: consolidate target deregistration error handling 2009-01-06 03:04:58 +00:00
dm.c dm: dec_pending needs locking to save error value 2009-10-16 23:18:15 +01:00
dm.h dm: remove queue next_ordered workaround for barriers 2009-07-23 20:30:40 +01:00
faulty.c md: Move check for bitmap presence to personality code. 2009-06-18 08:49:23 +10:00
Kconfig Merge branch 'dmaengine' into async-tx-next 2009-09-08 17:55:21 -07:00
linear.c md: report device as congested when suspended 2009-09-23 18:10:29 +10:00
linear.h md/linear: use call_rcu to free obsolete 'conf' structures. 2009-06-18 08:49:42 +10:00
Makefile md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
md.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6 2009-12-08 07:38:50 -08:00
md.h md: report device as congested when suspended 2009-09-23 18:10:29 +10:00
mktables.c md/raid6: move raid6 data processing to raid6_pq.ko 2009-03-31 15:09:39 +11:00
multipath.c md: remove unnecessary memset from multipath. 2009-09-23 18:16:31 +10:00
multipath.h md: remove mddev_to_conf "helper" macro 2009-06-16 16:54:21 +10:00
raid0.c md: report device as congested when suspended 2009-09-23 18:10:29 +10:00
raid0.h md: remove mddev_to_conf "helper" macro 2009-06-16 16:54:21 +10:00
raid1.c md: revert incorrect fix for read error handling in raid1. 2009-12-01 17:30:59 +11:00
raid1.h md: remove mddev_to_conf "helper" macro 2009-06-16 16:54:21 +10:00
raid5.c md/raid5: Allow dirty-degraded arrays to be assembled when only party is degraded. 2009-11-13 17:47:00 +11:00
raid5.h md: fix problems with RAID6 calculations for DDF. 2009-10-16 16:27:34 +11:00
raid6algos.c md/raid6: move raid6 data processing to raid6_pq.ko 2009-03-31 15:09:39 +11:00
raid6altivec.uc md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
raid6int.uc md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
raid6mmx.c md/raid6: move raid6 data processing to raid6_pq.ko 2009-03-31 15:09:39 +11:00
raid6recov.c md/raid6: move raid6 data processing to raid6_pq.ko 2009-03-31 15:09:39 +11:00
raid6sse1.c md/raid6: move raid6 data processing to raid6_pq.ko 2009-03-31 15:09:39 +11:00
raid6sse2.c md/raid6: move raid6 data processing to raid6_pq.ko 2009-03-31 15:09:39 +11:00
raid6x86.h md: fix typo in FSF address 2009-03-31 14:57:37 +11:00
raid10.c md: raid1/raid10: handle allocation errors during array setup. 2009-10-16 15:55:44 +11:00
raid10.h md: remove mddev_to_conf "helper" macro 2009-06-16 16:54:21 +10:00
unroll.awk md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00