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mm/mincore: use offset_in_page macro 

linux/mm.h provides offset_in_page() macro.  Let's use already predefined
macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexander Kuleshov 2015-11-05 18:46:38 -08:00 committed by Linus Torvalds
parent 1824cb7533
commit e7bbdd0713
1 changed files with 1 additions and 1 deletions
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mm/mincore.c
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@ -234,7 +234,7 @@ SYSCALL_DEFINE3(mincore, unsigned long, start, size_t, len,
/* This also avoids any overflows on PAGE_CACHE_ALIGN */ /* This also avoids any overflows on PAGE_CACHE_ALIGN */
pages = len >> PAGE_SHIFT; pages = len >> PAGE_SHIFT;
pages += (len & ~PAGE_MASK) != 0; pages += (offset_in_page(len)) != 0;
if (!access_ok(VERIFY_WRITE, vec, pages)) if (!access_ok(VERIFY_WRITE, vec, pages))
return -EFAULT; return -EFAULT;