On Sun, Dec 26, 2021 at 10:34:39PM +0800, Shiyang Ruan wrote: > +#define FS_DAX_MAPPING_COW 1UL > + > +#define MAPPING_SET_COW(m) (m = (struct address_space *)FS_DAX_MAPPING_COW) > +#define MAPPING_TEST_COW(m) (((unsigned long)m & FS_DAX_MAPPING_COW) == \ > + FS_DAX_MAPPING_COW)
These really should be inline functions and probably use lower case names. But different question, how does this not conflict with: #define PAGE_MAPPING_ANON 0x1 in page-flags.h? Either way I think this flag should move to page-flags.h and be integrated with the PAGE_MAPPING_FLAGS infrastucture.
