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 <bywxiao...@163.com>
---
 mm/page_alloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0a0acdb..b730f7d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6043,7 +6043,7 @@ 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)
@@ -6087,7 +6087,7 @@ 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().
  */
-- 
1.9.1


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