diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-08-01 08:59:31 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-08-01 08:59:31 -0300 |
| commit | 18808564aa3bc9ae3309fd8a5c0a93f7f9a23f9a (patch) | |
| tree | 4c1732a2dddb246f0d39a492cbf8e6db31f3af3e /mm/page_alloc.c | |
| parent | 9a0b36266f7a83912592052035b84f13b12e30da (diff) | |
| parent | 3d7cb6b04c3f3115719235cc6866b10326de34cd (diff) | |
Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up the fixes that went upstream via acme/perf/urgent and to get
to v5.19.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e008a3df0485c..b5b14b78c4fd4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3968,11 +3968,15 @@ static inline bool zone_watermark_fast(struct zone *z, unsigned int order, * need to be calculated. */ if (!order) { - long fast_free; + long usable_free; + long reserved; - fast_free = free_pages; - fast_free -= __zone_watermark_unusable_free(z, 0, alloc_flags); - if (fast_free > mark + z->lowmem_reserve[highest_zoneidx]) + usable_free = free_pages; + reserved = __zone_watermark_unusable_free(z, 0, alloc_flags); + + /* reserved may over estimate high-atomic reserves. */ + usable_free -= min(usable_free, reserved); + if (usable_free > mark + z->lowmem_reserve[highest_zoneidx]) return true; } |