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| author | Vinayak Menon <vinmenon@codeaurora.org> | 2017-04-14 12:15:18 +0530 |
|---|---|---|
| committer | Vinayak Menon <vinmenon@codeaurora.org> | 2017-04-18 10:29:44 +0530 |
| commit | d8c98bb6aee804c47b6462d3012aae38d0b043e0 (patch) | |
| tree | 6a8d92e849da3737ff8a6f2abce8260692678ff6 /include/linux/shrinker.h | |
| parent | 0293b8a7d07a2ef84bd227b81f20b966af900c51 (diff) | |
mm: separate out the invocation of lowmemorykiller shrinker
The commit '6b4f77 (mm: vmscan: invoke slab shrinkers from shrink_zone())'
fixed the invocation of shrinkers but resulted in lowmemorykiller shrinker
being called more. Reduce the number of lowmemorykiller shrinker
invocations by separating out the lowmemorykiller shrinker from
shrink_slab. This will make lowmemorykiller invoked only once for all zones
reclaimed in the direct reclaim path, and once for each zone in the kswap
path. As a consequence the eligible pages passed to shrink_slab_lmk is now
the reclaimable pages of all zones. Reducing the number of lowmemorykiller
invocations reduces the unnecessary time spent in lowmemorykiller and thus
contention or failures on lowmemorykiller's scan_mutex.
Change-Id: Iaabb9e441711f1dc804980b5853b64b3f214698d
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Diffstat (limited to 'include/linux/shrinker.h')
| -rw-r--r-- | include/linux/shrinker.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h index 4fcacd915d45..e77f648f9662 100644 --- a/include/linux/shrinker.h +++ b/include/linux/shrinker.h @@ -66,6 +66,7 @@ struct shrinker { /* Flags */ #define SHRINKER_NUMA_AWARE (1 << 0) #define SHRINKER_MEMCG_AWARE (1 << 1) +#define SHRINKER_LMK (1 << 2) extern int register_shrinker(struct shrinker *); extern void unregister_shrinker(struct shrinker *); |