diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-12-16 18:33:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-16 18:33:49 +0100 |
| commit | ee1156c11a1121e118b0a7f2dec240f0d421b1fd (patch) | |
| tree | b8771cc5a9758af9d7410fc519227c036c222130 /mm/nommu.c | |
| parent | b9f8fcd55bbdb037e5332dbdb7b494f0b70861ac (diff) | |
| parent | 8bea8672edfca7ec5f661cafb218f1205863b343 (diff) | |
Merge branch 'linus' into sched/urgent
Conflicts:
kernel/sched_idletask.c
Merge reason: resolve the conflicts, pick up latest changes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 9876fa0c3ad3..8687973462bb 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1143,9 +1143,6 @@ static int do_mmap_private(struct vm_area_struct *vma, if (ret < rlen) memset(base + ret, 0, rlen - ret); - } else { - /* if it's an anonymous mapping, then just clear it */ - memset(base, 0, rlen); } return 0; @@ -1343,6 +1340,11 @@ unsigned long do_mmap_pgoff(struct file *file, goto error_just_free; add_nommu_region(region); + /* clear anonymous mappings that don't ask for uninitialized data */ + if (!vma->vm_file && !(flags & MAP_UNINITIALIZED)) + memset((void *)region->vm_start, 0, + region->vm_end - region->vm_start); + /* okay... we have a mapping; now we have to register it */ result = vma->vm_start; |