evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mm: memory: reduce fault_around_bytes

Browse source 
mapping multiple pages on a fault result in page_check_references
hitting more number of referenced inactive pages and this results
in increased pressure on reclaim. Reduce it to the lowest possible
value. Reduced kswapd wakeups are observed with this change.

Change-Id: I03c6cac9f28fa328abab7b40f5f01144084a147c
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
This commit is contained in:
Vinayak Menon 2015-12-17 08:35:36 +05:30 • committed by David Keitel
parent 0e1466b439
commit d7749d7f8e
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
mm/memory.c
View file

@ -2831,7 +2831,7 @@ void do_set_pte(struct vm_area_struct *vma, unsigned long address,
}
static unsigned long fault_around_bytes __read_mostly =
rounddown_pow_of_two(65536);
rounddown_pow_of_two(4096);
#ifdef CONFIG_DEBUG_FS
static int fault_around_bytes_get(void *data, u64 *val)