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path: root/drivers/md/persistent-data/dm-array.c
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2017-02-16dm persistent data: add cursor skip functions to the cursor APIsJoe Thornber1-0/+21
Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2016-12-08dm array: remove a dead assignment in populate_ablock_with_values()Bart Van Assche1-2/+0
A value is assigned to 'nr_entries' but is never used, remove it. Signed-off-by: Bart Van Assche <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2016-09-22dm array: introduce cursor apiJoe Thornber1-0/+86
More efficient way to iterate an array due to prefetching (makes use of the new dm_btree_cursor_* api). Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2016-09-22dm array: add dm_array_new()Joe Thornber1-31/+111
dm_array_new() creates a new, populated array more efficiently than starting with an empty one and resizing. Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2015-10-31dm persistent data: eliminate unnecessary return valuesMikulas Patocka1-2/+2
dm_bm_unlock and dm_tm_unlock return an integer value but the returned value is always 0. The calling code sometimes checks the return value and sometimes doesn't. Eliminate these unnecessary return values and also the checks for them. Signed-off-by: Mikulas Patocka <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2014-12-01dm array: if resizing the array is a noop set the new root to the old oneJoe Thornber1-1/+3
This could've been quite bad (to return success but not update the new root to point at the old) but in practice the only known consumer of the dm array code is the DM cache target. And the DM cache target passes in the same old root to array_resize() anyway. Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2013-12-13dm array: fix a reference counting bug in shadow_ablockJoe Thornber1-1/+9
An old array block could have its reference count decremented below zero when it is being replaced in the btree by a new array block. The fix is to increment the old ablock's reference count just before inserting a new ablock into the btree. Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]> Cc: [email protected] # 3.9+
2013-11-05dm array: fix bug in growing arrayJoe Thornber1-1/+4
Entries would be lost if the old tail block was partially filled. Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]> Cc: [email protected] # 3.9+
2013-03-01dm persistent data: add transactional arrayJoe Thornber1-0/+808
Add a transactional array. Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Alasdair G Kergon <[email protected]>
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