Joe Thornber 71fd5ae25d dm persistent data: remove space map ref_count entries if redundant ... Save space by removing entries from the space map ref_count tree if they're no longer needed. Ref counts are stored in two places: a bitmap if the ref_count is below 3, or a btree of uint32_t if 3 or above. When a ref_count that was above 3 drops below we can remove it from the tree and save some metadata space. This removal was commented out before because I was unsure why this was causing under-populated btree nodes. Earlier patches have fixed this issue. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>		2012-03-28 18:41:27 +01:00
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dm-block-manager.c
dm-block-manager.h
dm-btree-internal.h	dm persistent data: remove redundant value_size arg from value_ptr	2012-03-28 18:41:25 +01:00
dm-btree-remove.c	dm persistent data: remove redundant value_size arg from value_ptr	2012-03-28 18:41:25 +01:00
dm-btree-spine.c
dm-btree.c	dm persistent data: remove redundant value_size arg from value_ptr	2012-03-28 18:41:25 +01:00
dm-btree.h
dm-persistent-data-internal.h
dm-space-map-checker.c	device-mapper: using EXPORT_SYBOL in dm-space-map-checker.c needs export.h	2011-11-07 10:29:10 -08:00
dm-space-map-checker.h
dm-space-map-common.c	dm persistent data: remove space map ref_count entries if redundant	2012-03-28 18:41:27 +01:00
dm-space-map-common.h
dm-space-map-disk.c
dm-space-map-disk.h
dm-space-map-metadata.c
dm-space-map-metadata.h
dm-space-map.h
dm-transaction-manager.c
dm-transaction-manager.h
Kconfig
Makefile