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authorAl Viro <viro@zeniv.linux.org.uk>2012-05-31 04:17:35 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-06-01 18:37:18 +0400
commiteb36c5873b96e8c7376768d3906da74aae6e3839 (patch)
tree01c5290ed4c55fea85e0dc3f8d70eeaab44678cf /mm/nommu.c
parentdc982501d9643ab0c117e7d87562857ce234652d (diff)
downloadlinux-eb36c5873b96e8c7376768d3906da74aae6e3839.tar.xz
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/nommu.c')
-rw-r--r--mm/nommu.c29
1 files changed, 1 insertions, 28 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index e6123a5b2cc1..c4acfbc09972 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1470,28 +1470,6 @@ error_getting_region:
return -ENOMEM;
}
-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)
@@ -1508,12 +1486,7 @@ SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len,
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- ret = security_mmap_file(file, prot, flags);
- if (!ret) {
- down_write(&current->mm->mmap_sem);
- retval = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(&current->mm->mmap_sem);
- }
+ ret = vm_mmap_pgoff(file, addr, len, prot, flags, pgoff);
if (file)
fput(file);