GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-04 21:31:51 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

thp: use compaction in kswapd for GFP_ATOMIC order > 0

Browse source 
This takes advantage of memory compaction to properly generate pages of
order > 0 if regular page reclaim fails and priority level becomes more
severe and we don't reach the proper watermarks.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrea Arcangeli 2011-01-13 15:47:11 -08:00 • committed by Linus Torvalds
parent 878aee7d6b
commit 5a03b051ed
3 changed files with 54 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

11
include/linux/compaction.h
View file

@ -11,6 +11,9 @@
/* The full zone was compacted */
#define COMPACT_COMPLETE 3
#define COMPACT_MODE_DIRECT_RECLAIM 0
#define COMPACT_MODE_KSWAPD 1
#ifdef CONFIG_COMPACTION
extern int sysctl_compact_memory;
extern int sysctl_compaction_handler(struct ctl_table *table, int write,
@ -25,7 +28,8 @@ extern unsigned long try_to_compact_pages(struct zonelist *zonelist,
bool sync);
extern unsigned long compaction_suitable(struct zone *zone, int order);
extern unsigned long compact_zone_order(struct zone *zone, int order,
gfp_t gfp_mask, bool sync);
gfp_t gfp_mask, bool sync,
int compact_mode);
/* Do not skip compaction more than 64 times */
#define COMPACT_MAX_DEFER_SHIFT 6
@ -70,9 +74,10 @@ static inline unsigned long compaction_suitable(struct zone *zone, int order)
}
static inline unsigned long compact_zone_order(struct zone *zone, int order,
gfp_t gfp_mask, bool sync)
gfp_t gfp_mask, bool sync,
int compact_mode)
{
return 0;
return COMPACT_CONTINUE;
}
static inline void defer_compaction(struct zone *zone)