Re: [PATCH v11 8/8] fsdax: set a CoW flag when associate reflink mappings

Hi Shiyang, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on xfs-linux/for-next] [also build test WARNING on linux/master] [cannot apply to hnaz-mm/master linus/master v5.17-rc5 next-20220225] [If your patch is applied to the wrong git tree, kindly drop us a

[PATCH v11 8/8] fsdax: set a CoW flag when associate reflink mappings

Introduce a PAGE_MAPPING_DAX_COW flag to support association with CoW file mappings. In this case, since the dax-rmap has already took the responsibility to look up for shared files by given dax page, the page->mapping is no longer to used for rmap but for marking that this dax page is shared.