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| author | Alexander Kuleshov <kuleshovmail@gmail.com> | 2015-11-05 18:46:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-05 19:34:48 -0800 |
| commit | 1824cb753354e026ab898cd472bddd540b50b00b (patch) | |
| tree | 391aa46b768e22a3987adae91b7a4104291d34d2 /mm/nommu.c | |
| parent | b0d61c7e56815b0b881c81f6779a65f4fdae4bc0 (diff) | |
| download | lwn-1824cb753354e026ab898cd472bddd540b50b00b.tar.gz lwn-1824cb753354e026ab898cd472bddd540b50b00b.zip | |
mm/nommu: 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>
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index ab14a2014dea..1e0f1688d9a4 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1497,7 +1497,7 @@ SYSCALL_DEFINE1(old_mmap, struct mmap_arg_struct __user *, arg) if (copy_from_user(&a, arg, sizeof(a))) return -EFAULT; - if (a.offset & ~PAGE_MASK) + if (offset_in_page(a.offset)) return -EINVAL; return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, @@ -1653,9 +1653,9 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) goto erase_whole_vma; if (start < vma->vm_start || end > vma->vm_end) return -EINVAL; - if (start & ~PAGE_MASK) + if (offset_in_page(start)) return -EINVAL; - if (end != vma->vm_end && end & ~PAGE_MASK) + if (end != vma->vm_end && offset_in_page(end)) return -EINVAL; if (start != vma->vm_start && end != vma->vm_end) { ret = split_vma(mm, vma, start, 1); @@ -1736,7 +1736,7 @@ static unsigned long do_mremap(unsigned long addr, if (old_len == 0 || new_len == 0) return (unsigned long) -EINVAL; - if (addr & ~PAGE_MASK) + if (offset_in_page(addr)) return -EINVAL; if (flags & MREMAP_FIXED && new_addr != addr) |