forked from Minki/linux
linux/mm.h: canonicalize macro PAGE_ALIGNED() definition
The macro PAGE_ALIGNED() is prone to cause error because it doesn't follow convention to parenthesize parameter @addr within macro body, for example unsigned long *ptr = kmalloc(...); PAGE_ALIGNED(ptr + 16); for the left parameter of macro IS_ALIGNED(), (unsigned long)(ptr + 16) is desired but the actual one is (unsigned long)ptr + 16. It is fixed by simply canonicalizing macro PAGE_ALIGNED() definition. Link: http://lkml.kernel.org/r/57EA6AE7.7090807@zoho.com Signed-off-by: zijun_hu <zijun_hu@htc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -126,7 +126,7 @@ extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *,
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#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
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/* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */
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#define PAGE_ALIGNED(addr) IS_ALIGNED((unsigned long)addr, PAGE_SIZE)
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#define PAGE_ALIGNED(addr) IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
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/*
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* Linux kernel virtual memory manager primitives.
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