Messages in this thread Patch in this message | | | From | Wei Yang <> | Subject | [PATCH] mm/spase: never partially remove memmap for early section | Date | Tue, 23 Jun 2020 17:42:58 +0800 |
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For early sections, we assumes its memmap will never be partially removed. But current behavior breaks this.
Let's correct it.
Fixes: ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug") Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com> --- mm/sparse.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/sparse.c b/mm/sparse.c index b2b9a3e34696..1a0069f492f5 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -825,10 +825,10 @@ static void section_deactivate(unsigned long pfn, unsigned long nr_pages, ms->section_mem_map &= ~SECTION_HAS_MEM_MAP; } - if (section_is_early && memmap) - free_map_bootmem(memmap); - else + if (!section_is_early) depopulate_section_memmap(pfn, nr_pages, altmap); + else if (memmap) + free_map_bootmem(memmap); if (empty) ms->section_mem_map = (unsigned long)NULL; -- 2.20.1 (Apple Git-117)
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