Joe Thornber 9b460d3699 dm btree: fix a recursion depth bug in btree walking code ... The walk code was using a 'ro_spine' to hold it's locked btree nodes. But this data structure is designed for the rolling lock scheme, and as such automatically unlocks blocks that are two steps up the call chain. This is not suitable for the simple recursive walk algorithm, which retraces its steps. This code is only used by the persistent array code, which in turn is only used by dm-cache. In order to trigger it you need to have a mapping tree that is more than 2 levels deep; which equates to 8-16 million cache blocks. For instance a 4T ssd with a very small block size of 32k only just triggers this bug. The fix just places the locked blocks on the stack, and stops using the ro_spine altogether. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org		2014-11-10 15:23:58 -05:00
..
dm-array.c	dm array: fix a reference counting bug in shadow_ablock	2013-12-13 14:22:10 -05:00
dm-array.h	dm persistent data: add transactional array	2013-03-01 22:45:51 +00:00
dm-bitset.c	dm bitset: only flush the current word if it has been dirtied	2014-03-27 16:56:23 -04:00
dm-bitset.h	dm bitset: only flush the current word if it has been dirtied	2014-03-27 16:56:23 -04:00
dm-block-manager.c	dm transaction manager: fix corruption due to non-atomic transaction commit	2014-03-27 16:56:23 -04:00
dm-block-manager.h	dm transaction manager: fix corruption due to non-atomic transaction commit	2014-03-27 16:56:23 -04:00
dm-btree-internal.h	dm btree: fix a recursion depth bug in btree walking code	2014-11-10 15:23:58 -05:00
dm-btree-remove.c	dm thin: fix discard corruption	2013-03-20 17:21:24 +00:00
dm-btree-spine.c	dm btree: fix a recursion depth bug in btree walking code	2014-11-10 15:23:58 -05:00
dm-btree.c	dm btree: fix a recursion depth bug in btree walking code	2014-11-10 15:23:58 -05:00
dm-btree.h	dm btree: add dm_btree_find_lowest_key	2014-01-09 16:29:17 -05:00
dm-persistent-data-internal.h	dm: add persistent data library	2011-10-31 20:19:11 +00:00
dm-space-map-common.c	dm space map common: make sure new space is used during extend	2014-01-07 21:05:17 -05:00
dm-space-map-common.h	dm persistent data: only commit space map if index changed	2012-07-27 15:08:06 +01:00
dm-space-map-disk.c	dm space map disk: optimise sm_disk_dec_block	2013-11-09 18:20:24 -05:00
dm-space-map-disk.h	dm: add persistent data library	2011-10-31 20:19:11 +00:00
dm-space-map-metadata.c	dm space map metadata: fix refcount decrement below 0 which caused corruption	2014-03-07 12:02:47 -05:00
dm-space-map-metadata.h	dm thin: allow metadata space larger than supported to go unused	2014-02-27 11:49:08 -05:00
dm-space-map.h	dm persistent data: add threshold callback to space map	2013-05-10 14:37:20 +01:00
dm-transaction-manager.c	dm transaction manager: fix corruption due to non-atomic transaction commit	2014-03-27 16:56:23 -04:00
dm-transaction-manager.h	dm transaction manager: fix corruption due to non-atomic transaction commit	2014-03-27 16:56:23 -04:00
Kconfig	dm: fix Kconfig indentation	2014-03-03 17:31:07 -05:00
Makefile	dm persistent data: add bitset	2013-03-01 22:45:51 +00:00