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-horiguchi@xxxxxxxxxxxxx> --- 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>