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BACKPORT: mm: khugepaged: recalculate min_free_kbytes after stopping khugepaged

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When initializing transparent huge pages, min_free_kbytes would be
calculated according to what khugepaged expected.

So when transparent huge pages get disabled, min_free_kbytes should be
recalculated instead of the higher value set by khugepaged.

Link: https://lkml.kernel.org/r/1633937809-16558-1-git-send-email-liangcaifan19@gmail.com
Signed-off-by: Liangcai Fan <liangcaifan19@gmail.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

(cherry picked from commit bd3400ea173fb611cdf2030d03620185ff6c0b0e)

Bug: 235523176
Signed-off-by: Chinwen Chang <chinwen.chang@mediatek.com>
Change-Id: I815893d25186847933db2a0872528fb15a00b3c8
This commit is contained in:
Liangcai Fan
2021-11-05 13:41:36 -07:00
committed by Carlos Llamas
parent 62bb81afc5
commit bf46e6f5db
3 changed files with 15 additions and 3 deletions
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1
include/linux/mm.h
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@@ -2520,6 +2520,7 @@ extern void memmap_init_range(unsigned long, int, unsigned long,
unsigned long, unsigned long, enum meminit_context,
struct vmem_altmap *, int migratetype);
extern void setup_per_zone_wmarks(void);
extern void calculate_min_free_kbytes(void);
extern int __meminit init_per_zone_wmark_min(void);
extern void mem_init(void);
extern void __init mmap_init(void);