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mm: Make {,set}page_address() static inline if WANT_PAGE_VIRTUAL
{,set}page_address() are macros if WANT_PAGE_VIRTUAL. If !WANT_PAGE_VIRTUAL, they're plain C functions. If someone calls them with a void *, this pointer is auto-converted to struct page * if !WANT_PAGE_VIRTUAL, but causes a build failure on architectures using WANT_PAGE_VIRTUAL (arc, m68k and sparc64): drivers/md/bcache/bset.c: In function `__btree_sort': drivers/md/bcache/bset.c:1190: warning: dereferencing `void *' pointer drivers/md/bcache/bset.c:1190: error: request for member `virtual' in something not a structure or union Convert them to static inline functions to fix this. There are already plenty of users of struct page members inside <linux/mm.h>, so there's no reason to keep them as macros. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 8 additions and 5 deletions
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@ -846,11 +846,14 @@ static __always_inline void *lowmem_page_address(const struct page *page)
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#endif
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#if defined(WANT_PAGE_VIRTUAL)
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#define page_address(page) ((page)->virtual)
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#define set_page_address(page, address) \
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do { \
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(page)->virtual = (address); \
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} while(0)
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static inline void *page_address(const struct page *page)
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{
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return page->virtual;
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}
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static inline void set_page_address(struct page *page, void *address)
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{
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page->virtual = address;
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}
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#define page_address_init() do { } while(0)
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#endif
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