Messages in this thread Patch in this message | | | From | Alexander Kuleshov <> | Subject | [PATCH 07/10] mm/mlock: Use offset_in_page macro | Date | Tue, 15 Sep 2015 20:08:17 +0600 |
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The <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> --- mm/mlock.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/mlock.c b/mm/mlock.c index 25936680..e86206b 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -560,7 +560,7 @@ static int do_mlock(unsigned long start, size_t len, int on) struct vm_area_struct * vma, * prev; int error; - VM_BUG_ON(start & ~PAGE_MASK); + VM_BUG_ON(offset_in_page(start)); VM_BUG_ON(len != PAGE_ALIGN(len)); end = start + len; if (end < start) @@ -616,7 +616,7 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len) lru_add_drain_all(); /* flush pagevec */ - len = PAGE_ALIGN(len + (start & ~PAGE_MASK)); + len = PAGE_ALIGN(len + (offset_in_page(start))); start &= PAGE_MASK; lock_limit = rlimit(RLIMIT_MEMLOCK); @@ -645,7 +645,7 @@ SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len) { int ret; - len = PAGE_ALIGN(len + (start & ~PAGE_MASK)); + len = PAGE_ALIGN(len + (offset_in_page(start))); start &= PAGE_MASK; down_write(¤t->mm->mmap_sem); -- 2.5.0
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