fs/exec.c: replace opencoded set_mask_bits()

Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/g/[email protected]
Signed-off-by: Vineet Gupta <[email protected]>
Reviewed-by: Anthony Yznaga <[email protected]>
Acked-by: Oleg Nesterov <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Peter Zijlstra (Intel) <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Miklos Szeredi <[email protected]>
Cc: Theodore Ts'o <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/fs/exec.c b/fs/exec.c
index 74f3672146a7e208b75488f0a8861a6ee0c05b5d..bf0ace3841ad6efc27ab37b88a32d5a367aad159 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1944,15 +1944,10 @@ EXPORT_SYMBOL(set_binfmt);
  */
 void set_dumpable(struct mm_struct *mm, int value)
 {
-       unsigned long old, new;
-
        if (WARN_ON((unsigned)value > SUID_DUMP_ROOT))
                return;
 
-       do {
-               old = READ_ONCE(mm->flags);
-               new = (old & ~MMF_DUMPABLE_MASK) | value;
-       } while (cmpxchg(&mm->flags, old, new) != old);
+       set_mask_bits(&mm->flags, MMF_DUMPABLE_MASK, value);
 }
 
 SYSCALL_DEFINE3(execve,