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mm/page_alloc.c: change sysctl_lower_zone_reserve_ratio to sysctl_lowmem_reserve_ratio in comments 

We use sysctl_lowmem_reserve_ratio rather than
sysctl_lower_zone_reserve_ratio to determine how aggressive the kernel
is in defending lowmem from the possibility of being captured into
pinned user memory.  To avoid misleading, correct it in some comments.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yaowei Bai 2015-09-08 15:04:13 -07:00 committed by Linus Torvalds
parent 013110a73d
commit 34b100605c
1 changed files with 2 additions and 2 deletions
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4
mm/page_alloc.c
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@ -6075,7 +6075,7 @@ void __init page_alloc_init(void)
}
/*
* calculate_totalreserve_pages - called when sysctl_lower_zone_reserve_ratio
* calculate_totalreserve_pages - called when sysctl_lowmem_reserve_ratio
* or min_free_kbytes changes.
*/
static void calculate_totalreserve_pages(void)
@ -6119,7 +6119,7 @@ static void calculate_totalreserve_pages(void)
/*
* setup_per_zone_lowmem_reserve - called whenever
* sysctl_lower_zone_reserve_ratio changes. Ensures that each zone
* sysctl_lowmem_reserve_ratio changes. Ensures that each zone
* has a correct pages reserved value, so an adequate number of
* pages are left in the zone after a successful __alloc_pages().
*/