Messages in this thread | | | From | Greentime Hu <> | Date | Wed, 31 Mar 2021 15:30:51 +0800 | Subject | Re: [PATCH] nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff |
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Greentime Hu <green.hu@gmail.com> 於 2021年3月31日 週三 下午3:30寫道: > > Matthew Wilcox <willy@infradead.org> 於 2021年3月31日 週三 上午2:14寫道: > > > > On Tue, Mar 30, 2021 at 08:51:26PM +0300, Mike Rapoport wrote: > > > From: Mike Rapoport <rppt@linux.ibm.com> > > > > > > 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(). > > > > > > 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: Greentiime Hu <green.hu@gmail.com> Typo. Acked-by: Greentime Hu <green.hu@gmail.com>
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