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authorAl Viro <viro@zeniv.linux.org.uk>2012-05-30 11:32:04 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-30 21:04:57 -0400
commit63a81db13205f21047a0799adfd3a2419f190577 (patch)
treecda25987d6e331cb026383f50e351bd9f5f66934 /mm/mremap.c
parent657bec850ff98b82b3a617b588a6523487344ccc (diff)
downloadlinaro-lsk-63a81db13205f21047a0799adfd3a2419f190577.tar.gz
merge do_mremap() into sys_mremap()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/mremap.c')
-rw-r--r--mm/mremap.c19
1 files changed, 5 insertions, 14 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index db8d983b5a7..169c53b8774 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -432,15 +432,17 @@ static int vma_expandable(struct vm_area_struct *vma, unsigned long delta)
* MREMAP_FIXED option added 5-Dec-1999 by Benjamin LaHaise
* This option implies MREMAP_MAYMOVE.
*/
-unsigned long do_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr)
+SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
+ unsigned long, new_len, unsigned long, flags,
+ unsigned long, new_addr)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned long ret = -EINVAL;
unsigned long charged = 0;
+ down_write(&current->mm->mmap_sem);
+
if (flags & ~(MREMAP_FIXED | MREMAP_MAYMOVE))
goto out;
@@ -538,17 +540,6 @@ unsigned long do_mremap(unsigned long addr,
out:
if (ret & ~PAGE_MASK)
vm_unacct_memory(charged);
- return ret;
-}
-
-SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
- unsigned long, new_len, unsigned long, flags,
- unsigned long, new_addr)
-{
- unsigned long ret;
-
- down_write(&current->mm->mmap_sem);
- ret = do_mremap(addr, old_len, new_len, flags, new_addr);
up_write(&current->mm->mmap_sem);
return ret;
}