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| author |   Mike Rapoport <rppt@linux.ibm.com> | 2021-04-09 13:27:23 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-09 14:54:23 -0700 |
| commit | a3a8833dffb7e7329c2586b8bfc531adb503f123 (patch) | |
| tree | 7fadf4a4abab241df784c017e8b9bb7efc2064c7 /arch/nds32 | |
| parent | mm/gup: check page posion status for coredump. (diff) | |
| download | linux-dev-a3a8833dffb7e7329c2586b8bfc531adb503f123.tar.xz linux-dev-a3a8833dffb7e7329c2586b8bfc531adb503f123.zip | |
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.c | 2 |
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 { |