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5 Commits

Author SHA1 Message Date
Joe Thornber f164e6900f dm btree: add dm_btree_find_lowest_key 
dm_btree_find_lowest_key is the reciprocal of dm_btree_find_highest_key.
Factor out common code for dm_btree_find_{highest,lowest}_key.

dm_btree_find_lowest_key is needed for an upcoming DM target, as such it
is best to get this interface in place.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
 2014-01-09 16:29:17 -05:00
Joe Thornber 4e7f1f9089 dm persistent data: add btree_walk 
Add dm_btree_walk to iterate through the contents of a btree.
This will be used by the dm cache target.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
 2013-03-01 22:45:50 +00:00
Mike Snitzer 018cede93c dm persistent data: set some btree fn parms const 
Mark some constant parameters constant in some dm-btree functions.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
 2013-03-01 22:45:47 +00:00
Masanari Iida 83f0d77a7f md: Fix typo in drivers/md 
Correct spelling typo in drivers/md.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2012-10-29 22:57:50 +01:00
Joe Thornber 3241b1d3e0 dm: add persistent data library 
The persistent-data library offers a re-usable framework for the storage
and management of on-disk metadata in device-mapper targets.

It's used by the thin-provisioning target in the next patch and in an
upcoming hierarchical storage target.

For further information, please read
Documentation/device-mapper/persistent-data.txt

Signed-off-by: Joe Thornber <thornber@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
 2011-10-31 20:19:11 +00:00