Re: [PATCH v4][RESENT] add MAP_UNLOCKED mmap flag

On Tue, Jan 12, 2010 at 03:21:45PM -0800, Chris Wright wrote:

* Gleb Natapov (gleb@redhat.com) wrote:

quoted

 v3->v4
  - return error if MAP_LOCKED | MAP_UNLOCKED is specified

...

quoted

--- a/mm/mmap.c
+++ b/mm/mmap.c

@@ -962,6 +962,12 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 		if (!can_do_mlock())
 			return -EPERM;
 
+        if (flags & MAP_UNLOCKED)
+                vm_flags &= ~VM_LOCKED;
+
+        if (flags & MAP_UNLOCKED)
+                vm_flags &= ~VM_LOCKED;
+
 	/* mlock MCL_FUTURE? */
 	if (vm_flags & VM_LOCKED) {
 		unsigned long locked, lock_limit;

Looks like same patch applied twice rather than adding the
(MAP_LOCKED | MAP_UNLOCKED) check.

Thanks Chris, will resend.

--
			Gleb.

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