Commit b9da86e3 authored by Ira Weiny's avatar Ira Weiny Committed by Dave Hansen
Browse files

x86/uaccess: Remove memcpy_page_flushcache() 



Commit 21b56c84 ("iov_iter: get rid of separate bvec and xarray
callbacks") removed the calls to memcpy_page_flushcache().

In addition, memcpy_page_flushcache() uses the deprecated
kmap_atomic().

Remove the unused x86 memcpy_page_flushcache() implementation and
also get rid of one more kmap_atomic() user.

[ dhansen: tweak changelog ]

Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20221230-kmap-x86-v1-1-15f1ecccab50%40intel.com
parent 8c3223a5

arch/x86/include/asm/uaccess_64.h

+0 −2
Original line number Diff line number Diff line
@@ -62,8 +62,6 @@ extern long __copy_user_nocache(void *dst, const void __user *src, 
				unsigned size, int zerorest);



extern long __copy_user_flushcache(void *dst, const void __user *src, unsigned size);

extern void memcpy_page_flushcache(char *to, struct page *page, size_t offset,

			   size_t len);



static inline int

__copy_from_user_inatomic_nocache(void *dst, const void __user *src,

arch/x86/lib/usercopy_64.c

+0 −9
Original line number Diff line number Diff line
@@ -136,13 +136,4 @@ void __memcpy_flushcache(void *_dst, const void *_src, size_t size) 
	}

}

EXPORT_SYMBOL_GPL(__memcpy_flushcache);



void memcpy_page_flushcache(char *to, struct page *page, size_t offset,

		size_t len)

{

	char *from = kmap_atomic(page);



	memcpy_flushcache(to, from + offset, len);

	kunmap_atomic(from);

}

#endif