This flag shows that soft dirty bit is not enabled yet.
You can enable it by "echo 4 > /proc/pid/clear_refs."
Signed-off-by: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
---
fs/proc/task_mmu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git v3.12-rc2-mmots-2013-09-24-17-03.orig/fs/proc/task_mmu.c
v3.12-rc2-mmots-2013-09-24-17-03/fs/proc/task_mmu.c
index 7366e9d..c591928 100644
--- v3.12-rc2-mmots-2013-09-24-17-03.orig/fs/proc/task_mmu.c
+++ v3.12-rc2-mmots-2013-09-24-17-03/fs/proc/task_mmu.c
@@ -561,6 +561,9 @@ static void show_smap_vma_flags(struct seq_file *m, struct
vm_area_struct *vma)
[ilog2(VM_NONLINEAR)] = "nl",
[ilog2(VM_ARCH_1)] = "ar",
[ilog2(VM_DONTDUMP)] = "dd",
+#ifdef CONFIG_MEM_SOFT_DIRTY
+ [ilog2(VM_SOFTDIRTY)] = "sd",
+#endif
[ilog2(VM_MIXEDMAP)] = "mm",
[ilog2(VM_HUGEPAGE)] = "hg",
[ilog2(VM_NOHUGEPAGE)] = "nh",
--
1.8.3.1
--
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