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x86/uaccess: Remove memcpy_page_flushcache()

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Commit 21b56c8477 ("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: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20221230-kmap-x86-v1-1-15f1ecccab50%40intel.com
This commit is contained in:
Ira Weiny
2023-03-15 16:20:54 -07:00
committed by Dave Hansen
parent 8c3223a50f
commit b9da86e3aa
2 changed files with 0 additions and 11 deletions
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2
arch/x86/include/asm/uaccess_64.h
View File

@@ -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,

9
arch/x86/lib/usercopy_64.c
View File

@@ -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