Mike Snitzer 795e633a2d dm cache: fix device destroy hang due to improper prealloc_used accounting ... Commit 665022d72f ("dm cache: avoid calls to prealloc_free_structs() if possible") introduced a regression that caused the removal of a DM cache device to hang in cache_postsuspend()'s call to wait_for_migrations() with the following stack trace: [<ffffffff81651457>] schedule+0x37/0x80 [<ffffffffa041e21b>] cache_postsuspend+0xbb/0x470 [dm_cache] [<ffffffff810ba970>] ? prepare_to_wait_event+0xf0/0xf0 [<ffffffffa0006f77>] dm_table_postsuspend_targets+0x47/0x60 [dm_mod] [<ffffffffa0001eb5>] __dm_destroy+0x215/0x250 [dm_mod] [<ffffffffa0004113>] dm_destroy+0x13/0x20 [dm_mod] [<ffffffffa00098cd>] dev_remove+0x10d/0x170 [dm_mod] [<ffffffffa00097c0>] ? dev_suspend+0x240/0x240 [dm_mod] [<ffffffffa0009f85>] ctl_ioctl+0x255/0x4d0 [dm_mod] [<ffffffff8127ac00>] ? SYSC_semtimedop+0x280/0xe10 [<ffffffffa000a213>] dm_ctl_ioctl+0x13/0x20 [dm_mod] [<ffffffff811fd432>] do_vfs_ioctl+0x2d2/0x4b0 [<ffffffff81117d5f>] ? __audit_syscall_entry+0xaf/0x100 [<ffffffff81022636>] ? do_audit_syscall_entry+0x66/0x70 [<ffffffff811fd689>] SyS_ioctl+0x79/0x90 [<ffffffff81023e58>] ? syscall_trace_leave+0xb8/0x110 [<ffffffff81654f6e>] entry_SYSCALL_64_fastpath+0x12/0x71 Fix this by accounting for the call to prealloc_data_structs() immediately _before_ the call as opposed to after. This is needed because it is possible to break out of the control loop after the call to prealloc_data_structs() but before prealloc_used was set to true. Signed-off-by: Mike Snitzer <snitzer@redhat.com>		2015-07-29 14:32:09 -04:00
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bcache	…
persistent-data	…
Kconfig	dm crypt: update wiki page URL	2015-07-27 07:58:16 -04:00
Makefile	…
bitmap.c	Some md fixes for 4.2	2015-07-25 11:24:58 -07:00
bitmap.h	…
dm-bio-prison.c	…
dm-bio-prison.h	…
dm-bio-record.h	…
dm-bufio.c	…
dm-bufio.h	…
dm-builtin.c	…
dm-cache-block-types.h	…
dm-cache-metadata.c	…
dm-cache-metadata.h	…
dm-cache-policy-cleaner.c	…
dm-cache-policy-internal.h	…
dm-cache-policy-mq.c	…
dm-cache-policy-smq.c	dm cache policy smq: fix alloc_bitset check that always evaluates as false	2015-07-27 07:58:15 -04:00
dm-cache-policy.c	…
dm-cache-policy.h	…
dm-cache-target.c	dm cache: fix device destroy hang due to improper prealloc_used accounting	2015-07-29 14:32:09 -04:00
dm-crypt.c	…
dm-delay.c	…
dm-era-target.c	…
dm-exception-store.c	…
dm-exception-store.h	…
dm-flakey.c	…
dm-io.c	…
dm-ioctl.c	…
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-log.c	…
dm-mpath.c	…
dm-mpath.h	…
dm-path-selector.c	…
dm-path-selector.h	…
dm-queue-length.c	…
dm-raid.c	…
dm-raid1.c	…
dm-region-hash.c	…
dm-round-robin.c	…
dm-service-time.c	…
dm-snap-persistent.c	…
dm-snap-transient.c	…
dm-snap.c	…
dm-stats.c	…
dm-stats.h	…
dm-stripe.c	…
dm-switch.c	…
dm-sysfs.c	…
dm-table.c	…
dm-target.c	…
dm-thin-metadata.c	…
dm-thin-metadata.h	…
dm-thin.c	dm thin: return -ENOSPC when erroring retry list due to out of data space	2015-07-26 17:39:19 -04:00
dm-uevent.c	…
dm-uevent.h	…
dm-verity.c	…
dm-zero.c	…
dm.c	…
dm.h	…
faulty.c	…
linear.c	…
linear.h	…
md-cluster.c	Fix read-balancing during node failure	2015-07-24 13:37:59 +10:00
md-cluster.h	Fix read-balancing during node failure	2015-07-24 13:37:59 +10:00
md.c	Some md fixes for 4.2	2015-07-25 11:24:58 -07:00
md.h	…
multipath.c	…
multipath.h	…
raid0.c	…
raid0.h	…
raid1.c	Fix read-balancing during node failure	2015-07-24 13:37:59 +10:00
raid1.h	…
raid5.c	md/raid5: clear R5_NeedReplace when no longer needed.	2015-07-24 13:38:04 +10:00
raid5.h	…
raid10.c	md/raid10: always set reshape_safe when initializing reshape_position.	2015-07-22 14:08:24 +10:00
raid10.h	…