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| author |   Liam R. Howlett <Liam.Howlett@oracle.com> | 2023-05-18 10:55:39 -0400 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2023-06-09 16:25:34 -0700 |
| commit | dd9a85138280d8caef2de6d3e533ee286ca200d6 (patch) | |
| tree | f03d568133213e4b67efb5df36e16fa616056768 /mm/page_alloc.c | |
| parent | maple_tree: relocate mas_rewalk() and mas_rewalk_if_dead() (diff) | |
| download | wireguard-linux-dd9a85138280d8caef2de6d3e533ee286ca200d6.tar.xz wireguard-linux-dd9a85138280d8caef2de6d3e533ee286ca200d6.zip | |
maple_tree: introduce mas_prev_slot() interface
Sometimes the user needs to revert to the previous slot, regardless of if
it is empty or not. Add an interface to go to the previous slot.
Since there can't be two consecutive NULLs in the tree, the mas_prev()
function can be implemented by calling mas_prev_slot() a maximum of 2
times. Change the underlying interface to use mas_prev_slot() to align
the code.
Link: https://lkml.kernel.org/r/20230518145544.1722059-31-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: David Binderman <dcb314@hotmail.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions