lkml.org 
[lkml]   [2020]   [Jun]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mm/spase: never partially remove memmap for early section
Date
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)
\
 
 \ /
  Last update: 2020-06-23 11:44    [W:0.196 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site