The patch titled
Subject: kernel.h: add IS_PTR_ALIGNED() macro
has been added to the -mm tree. Its filename is
kernelh-add-is_ptr_aligned-macro.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernelh-add-is_ptr_aligned-macro.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernelh-add-is_ptr_aligned-macro.patch
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------------------------------------------------------
From: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Subject: kernel.h: add IS_PTR_ALIGNED() macro
We often check if a pointer has a specific alignment. Because the '&'
(bitwise AND) operator cannot take a pointer for the operand, so we need a
cast like, IS_ALIGNED((unsigned long)p, a).
IS_PTR_ALIGNED will be useful as a shorthand.
Link: http://lkml.kernel.org/r/1490782930-30429-1-git-send-email-yamada.masahiro@xxxxxxxxxxxxx
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/kernel.h | 1 +
1 file changed, 1 insertion(+)
diff -puN include/linux/kernel.h~kernelh-add-is_ptr_aligned-macro include/linux/kernel.h
--- a/include/linux/kernel.h~kernelh-add-is_ptr_aligned-macro
+++ a/include/linux/kernel.h
@@ -50,6 +50,7 @@
#define __ALIGN_MASK(x, mask) __ALIGN_KERNEL_MASK((x), (mask))
#define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a)))
#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
+#define IS_PTR_ALIGNED(p, a) (IS_ALIGNED((unsigned long)p, a))
/* generic data direction definitions */
#define READ 0
_
Patches currently in -mm which might be from yamada.masahiro@xxxxxxxxxxxxx are
scripts-spellingtxt-add-intialised-pattern-and-fix-typo-instances.patch
kernelh-add-is_ptr_aligned-macro.patch
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