arm: uaccess: Remove memcpy_page_flushcache()

Commit 21b56c8 ("iov_iter: get rid of separate bvec and xarray
callbacks") removed the calls to memcpy_page_flushcache().

Remove the unnecessary memcpy_page_flushcache() call.

Cc: Al Viro <[email protected]>
Cc: "Dan Williams" <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Signed-off-by: Ira Weiny <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: weiny2

arch/arm64/include/asm/uaccess.h

@@ -449,8 +449,6 @@ extern long strncpy_from_user(char *dest, const char __user *src, long count);
 extern __must_check long strnlen_user(const char __user *str, long n);
 
 #ifdef CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE
-struct page;
-void memcpy_page_flushcache(char *to, struct page *page, size_t offset, size_t len);
 extern unsigned long __must_check __copy_user_flushcache(void *to, const void __user *from, unsigned long n);
 
 static inline int __copy_from_user_flushcache(void *dst, const void __user *src, unsigned size)

arch/arm64/lib/uaccess_flushcache.c

@@ -19,12 +19,6 @@ void memcpy_flushcache(void *dst, const void *src, size_t cnt)
 }
 EXPORT_SYMBOL_GPL(memcpy_flushcache);
 
-void memcpy_page_flushcache(char *to, struct page *page, size_t offset,
-			    size_t len)
-{
-	memcpy_flushcache(to, page_address(page) + offset, len);
-}
-
 unsigned long __copy_user_flushcache(void *to, const void __user *from,
 				     unsigned long n)
 {