Joe Thornber 2871c69e02 dm btree remove: fix a bug when rebalancing nodes after removal ...

Commit 4c7e309340 ("dm btree remove: fix bug in redistribute3") wasn't
a complete fix for redistribute3().

The redistribute3 function takes 3 btree nodes and shares out the entries
evenly between them.  If the three nodes in total contained
(MAX_ENTRIES * 3) - 1 entries between them then this was erroneously getting
rebalanced as (MAX_ENTRIES - 1) on the left and right, and (MAX_ENTRIES + 1) in
the center.

Fix this issue by being more careful about calculating the target number
of entries for the left and right nodes.

Unit tested in userspace using this program:
https://github.com/jthornber/redistribute3-test/blob/master/redistribute3_t.c

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org

2015-10-23 14:02:55 -04:00

..

dm-array.c

dm array: if resizing the array is a noop set the new root to the old one

2014-12-01 11:30:07 -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: remove unlikely() before IS_ERR()

2015-08-12 11:32:21 -04:00

dm-block-manager.h

dm thin metadata: remove in-core 'read_only' flag

2015-05-29 14:18:59 -04:00

dm-btree-internal.h

dm btree: add ref counting ops for the leaves of top level btrees

2015-08-12 10:50:37 -04:00

dm-btree-remove.c

dm btree remove: fix a bug when rebalancing nodes after removal

2015-10-23 14:02:55 -04:00

dm-btree-spine.c

dm btree: add ref counting ops for the leaves of top level btrees

2015-08-12 10:50:37 -04:00

dm-btree.c

dm btree: remove unused "dm_block_t root" parameter in btree_split_sibling()

2015-08-12 11:32:19 -04:00

dm-btree.h

dm btree: add dm_btree_remove_leaves()

2015-06-11 17:13:03 -04:00

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: fix sm_disk_count_is_more_than_one()

2015-02-13 19:32:58 -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 occasional leak of a metadata block on resize

2015-06-17 10:09:23 -04:00

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: add support for prefetching blocks of metadata

2014-11-10 15:25:26 -05:00

dm-transaction-manager.h

dm transaction manager: add support for prefetching blocks of metadata

2014-11-10 15:25:26 -05:00

Kconfig

kconfig: use bool instead of boolean for type definition attributes

2015-01-07 13:08:04 +01:00

Makefile

dm persistent data: add bitset

2013-03-01 22:45:51 +00:00