[PATCH 5/5] fs/proc/task_mmu.c: update m->version in the main loop in m_start()

[Oleg Nesterov]

Change the main loop in m_start() to update m->version. Mostly for
consistency, but this can help to avoid the same loop if the very
1st ->show() fails due to seq_overflow().

Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
---
 fs/proc/task_mmu.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 1b897dc..4ec6b72 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -183,11 +183,14 @@ static void *m_start(struct seq_file *m, loff_t *ppos)
 
 	m->version = 0;
 	if (pos < mm->map_count) {
-		for (vma = mm->mmap; pos; pos--)
+		for (vma = mm->mmap; pos; pos--) {
+			m->version = vma->vm_start;
 			vma = vma->vm_next;
+		}
 		return vma;
 	}
 
+	/* we do not bother to update m->version in this case */
 	if (pos == mm->map_count && priv->tail_vma)
 		return priv->tail_vma;
 
-- 
1.5.5.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/