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| author | Wonhyuk Yang <vvghjk1234@gmail.com> | 2022-05-12 20:22:51 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-05-13 07:20:09 -0700 |
| commit | 8a87d6959f0d81108d95b0dbd3d7dc2cecea853d (patch) | |
| tree | ec0296f866a992891ac6e87de4d2f9d272cecfbb /mm/cma_debug.c | |
| parent | 81a84182c3430c8f5f7ccf9e95a10b99f727f727 (diff) | |
| download | linux-8a87d6959f0d81108d95b0dbd3d7dc2cecea853d.tar.bz2 | |
mm/page_alloc: cache the result of node_dirty_ok()
To spread dirty pages, nodes are checked whether they have reached the
dirty limit using the expensive node_dirty_ok(). To reduce the frequency
of calling node_dirty_ok(), the last node that hit the dirty limit can be
cached.
Instead of caching the node, caching both the node and its node_dirty_ok()
status can reduce the number of calle to node_dirty_ok().
[akpm@linux-foundation.org: rename last_pgdat_dirty_limit to last_pgdat_dirty_ok]
Link: https://lkml.kernel.org/r/20220430011032.64071-1-vvghjk1234@gmail.com
Signed-off-by: Wonhyuk Yang <vvghjk1234@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Donghyeok Kim <dthex5d@gmail.com>
Cc: JaeSang Yoo <jsyoo5b@gmail.com>
Cc: Jiyoup Kim <lakroforce@gmail.com>
Cc: Ohhoon Kwon <ohkwon1043@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/cma_debug.c')
0 files changed, 0 insertions, 0 deletions