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| author | Kemeng Shi <shikemeng@huaweicloud.com> | 2023-07-14 19:47:48 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 10:12:31 -0700 |
| commit | 3c09be5a2be861d7f74b0251a8e77859b4c654cc (patch) | |
| tree | f75f55f9b98747cbb94d47a54fdb28736b425872 /mm/page_ext.c | |
| parent | 063ff7cd8bf24aa14c897b6168591d3d0dae2a5e (diff) | |
| download | linux-stable-3c09be5a2be861d7f74b0251a8e77859b4c654cc.tar.gz linux-stable-3c09be5a2be861d7f74b0251a8e77859b4c654cc.tar.bz2 linux-stable-3c09be5a2be861d7f74b0251a8e77859b4c654cc.zip | |
mm/page_ext: remove rollback for untouched mem_section in online_page_ext
If init_section_page_ext failed, we only need rollback for mem_section
before failed mem_section. Make rollback end point to failed mem_section
to remove unnecessary rollback.
As pfn += PAGES_PER_SECTION will be executed even if init_section_page_ext
failed. So pfn points to mem_section after failed mem_section. Subtract
one mem_section from pfn to get failed mem_section.
Link: https://lkml.kernel.org/r/20230714114749.1743032-3-shikemeng@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_ext.c')
| -rw-r--r-- | mm/page_ext.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/page_ext.c b/mm/page_ext.c index 096451df1c87..f052397dc70f 100644 --- a/mm/page_ext.c +++ b/mm/page_ext.c @@ -424,6 +424,7 @@ static int __meminit online_page_ext(unsigned long start_pfn, return 0; /* rollback */ + end = pfn - PAGES_PER_SECTION; for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION) __free_page_ext(pfn); |