diff options
| author | Mel Gorman <mgorman@techsingularity.net> | 2023-01-13 11:12:15 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-02 22:33:12 -0800 |
| commit | ab3508854353793cd35e348fde89a5c09b2fd8b5 (patch) | |
| tree | 62c3084c0964c245a4800191b58a5c3da3b07fad /mm/internal.h | |
| parent | eb2e2b425c6984ca8034448a3f2c680622bd3d4d (diff) | |
| download | lwn-ab3508854353793cd35e348fde89a5c09b2fd8b5.tar.gz lwn-ab3508854353793cd35e348fde89a5c09b2fd8b5.zip | |
mm/page_alloc: explicitly define what alloc flags deplete min reserves
As there are more ALLOC_ flags that affect reserves, define what flags
affect reserves and clarify the effect of each flag.
Link: https://lkml.kernel.org/r/20230113111217.14134-5-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: NeilBrown <neilb@suse.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index 62428467d7cf..f7c3bc80c475 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -792,6 +792,9 @@ unsigned int reclaim_clean_pages_from_list(struct zone *zone, #define ALLOC_HIGHATOMIC 0x200 /* Allows access to MIGRATE_HIGHATOMIC */ #define ALLOC_KSWAPD 0x800 /* allow waking of kswapd, __GFP_KSWAPD_RECLAIM set */ +/* Flags that allow allocations below the min watermark. */ +#define ALLOC_RESERVES (ALLOC_HARDER|ALLOC_MIN_RESERVE|ALLOC_HIGHATOMIC|ALLOC_OOM) + enum ttu_flags; struct tlbflush_unmap_batch; |