diff options
| author |   Mel Gorman <mgorman@techsingularity.net> | 2018-12-28 00:35:48 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 12:11:48 -0800 |
| commit | 0a79cdad5eb213b3a629e624565b1b3bf9192b7c (patch) | |
| tree | 06aee01f5342cc975b477a9dc9e2987840453f59 /mm/internal.h | |
| parent | mm: move zone watermark accesses behind an accessor (diff) | |
| download | linux-dev-0a79cdad5eb213b3a629e624565b1b3bf9192b7c.tar.xz linux-dev-0a79cdad5eb213b3a629e624565b1b3bf9192b7c.zip | |
mm: use alloc_flags to record if kswapd can wake
This is a preparation patch that copies the GFP flag __GFP_KSWAPD_RECLAIM
into alloc_flags. This is a preparation patch only that avoids having to
pass gfp_mask through a long callchain in a future patch.
Note that the setting in the fast path happens in alloc_flags_nofragment()
and it may be claimed that this has nothing to do with ALLOC_NO_FRAGMENT.
That's true in this patch but is not true later so it's done now for
easier review to show where the flag needs to be recorded.
No functional change.
[mgorman@techsingularity.net: ALLOC_KSWAPD flag needs to be applied in the !CONFIG_ZONE_DMA32 case]
Link: http://lkml.kernel.org/r/20181126143503.GO23260@techsingularity.net
Link: http://lkml.kernel.org/r/20181123114528.28802-4-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <zi.yan@cs.rutgers.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index 2ffe0cd64c70..f4a7bb02decf 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -499,6 +499,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone, #else #define ALLOC_NOFRAGMENT 0x0 #endif +#define ALLOC_KSWAPD 0x200 /* allow waking of kswapd */ enum ttu_flags; struct tlbflush_unmap_batch; |