1 files changed, 7 insertions, 0 deletions

diff --git a/fs/attr.c b/fs/attr.c
index 91dbe2a107f2..caf2aa521e2b 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -175,6 +175,13 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
                         return -EPERM;
         }
 
+        if ((ia_valid & ATTR_MODE)) {
+                mode_t amode = attr->ia_mode;
+                /* Flag setting protected by i_mutex */
+                if (is_sxid(amode))
+                        inode->i_flags &= ~S_NOSEC;
+        }
+
         now = current_fs_time(inode->i_sb);
 
         attr->ia_ctime = now;