1 files changed, 35 insertions, 6 deletions

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 8034706a7af8..98bacd9ea7fd 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -14,6 +14,7 @@
 #include <linux/poll.h>
 #include <linux/pagemap.h>
 #include <linux/sched.h>
+#include <linux/fsnotify.h>
 
 #include "kernfs-internal.h"
 
@@ -785,20 +786,48 @@ static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait)
  */
 void kernfs_notify(struct kernfs_node *kn)
 {
+        struct kernfs_root *root = kernfs_root(kn);
         struct kernfs_open_node *on;
+        struct kernfs_super_info *info;
         unsigned long flags;
 
+        if (WARN_ON(kernfs_type(kn) != KERNFS_FILE))
+                return;
+
+        /* kick poll */
         spin_lock_irqsave(&kernfs_open_node_lock, flags);
 
-        if (!WARN_ON(kernfs_type(kn) != KERNFS_FILE)) {
-                on = kn->attr.open;
-                if (on) {
-                        atomic_inc(&on->event);
-                        wake_up_interruptible(&on->poll);
-                }
+        on = kn->attr.open;
+        if (on) {
+                atomic_inc(&on->event);
+                wake_up_interruptible(&on->poll);
         }
 
         spin_unlock_irqrestore(&kernfs_open_node_lock, flags);
+
+        /* kick fsnotify */
+        mutex_lock(&kernfs_mutex);
+
+        list_for_each_entry(info, &root->supers, node) {
+                struct inode *inode;
+                struct dentry *dentry;
+
+                inode = ilookup(info->sb, kn->ino);
+                if (!inode)
+                        continue;
+
+                dentry = d_find_any_alias(inode);
+                if (dentry) {
+                        fsnotify_parent(NULL, dentry, FS_MODIFY);
+                        fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE,
+                                 NULL, 0);
+                        dput(dentry);
+                }
+
+                iput(inode);
+        }
+
+        mutex_unlock(&kernfs_mutex);
 }
 EXPORT_SYMBOL_GPL(kernfs_notify);