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authorAl Viro <viro@zeniv.linux.org.uk>2012-05-30 20:17:35 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-06-01 10:37:18 -0400
commiteb36c5873b96e8c7376768d3906da74aae6e3839 (patch)
tree01c5290ed4c55fea85e0dc3f8d70eeaab44678cf /mm/mmap.c
parentdc982501d9643ab0c117e7d87562857ce234652d (diff)
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new helper: vm_mmap_pgoff()
take it to mm/util.c, convert vm_mmap() to use of that one and take it to mm/util.c as well, convert both sys_mmap_pgoff() to use of vm_mmap_pgoff() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c30
1 files changed, 1 insertions, 29 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 538c905d6d9..98ef8a6c2cd 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1102,28 +1102,6 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
return mmap_region(file, addr, len, flags, vm_flags, pgoff);
}
-unsigned long vm_mmap(struct file *file, unsigned long addr,
- unsigned long len, unsigned long prot,
- unsigned long flag, unsigned long offset)
-{
- unsigned long ret;
- struct mm_struct *mm = current->mm;
-
- if (unlikely(offset + PAGE_ALIGN(len) < offset))
- return -EINVAL;
- if (unlikely(offset & ~PAGE_MASK))
- return -EINVAL;
-
- ret = security_mmap_file(file, prot, flag);
- if (!ret) {
- down_write(&mm->mmap_sem);
- ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT);
- up_write(&mm->mmap_sem);
- }
- return ret;
-}
-EXPORT_SYMBOL(vm_mmap);
-
SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, unsigned long, pgoff)
@@ -1155,13 +1133,7 @@ SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len,
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- retval = security_mmap_file(file, prot, flags);
- if (!retval) {
- down_write(&current->mm->mmap_sem);
- retval = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(&current->mm->mmap_sem);
- }
-
+ retval = vm_mmap_pgoff(file, addr, len, prot, flags, pgoff);
if (file)
fput(file);
out: