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authorMike Rapoport <rppt@linux.ibm.com>2021-04-09 23:27:23 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-04-10 00:54:23 +0300
commita3a8833dffb7e7329c2586b8bfc531adb503f123 (patch)
tree7fadf4a4abab241df784c017e8b9bb7efc2064c7 /arch/nds32
parentd3378e86d1822b6d0bebfbc18a8348691c05dfa0 (diff)
downloadlinux-a3a8833dffb7e7329c2586b8bfc531adb503f123.tar.xz
nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff
Commit cb9f753a3731 ("mm: fix races between swapoff and flush dcache") updated flush_dcache_page implementations on several architectures to use page_mapping_file() in order to avoid races between page_mapping() and swapoff(). This update missed arch/nds32 and there is a possibility of a race there. Replace page_mapping() with page_mapping_file() in nds32 implementation of flush_dcache_page(). Link: https://lkml.kernel.org/r/20210330175126.26500-1-rppt@kernel.org Fixes: cb9f753a3731 ("mm: fix races between swapoff and flush dcache") Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Greentime Hu <green.hu@gmail.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/nds32')
-rw-r--r--arch/nds32/mm/cacheflush.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c
index 6eb98a7ad27d..ad5344ef5d33 100644
--- a/arch/nds32/mm/cacheflush.c
+++ b/arch/nds32/mm/cacheflush.c
@@ -238,7 +238,7 @@ void flush_dcache_page(struct page *page)
{
struct address_space *mapping;
- mapping = page_mapping(page);
+ mapping = page_mapping_file(page);
if (mapping && !mapping_mapped(mapping))
set_bit(PG_dcache_dirty, &page->flags);
else {