Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / fs / kernfs / file.c

diff --git a/kernel/fs/kernfs/file.c b/kernel/fs/kernfs/file.c
index 7247252..6e9a912 100644 (file)
--- a/kernel/fs/kernfs/file.c
+++ b/kernel/fs/kernfs/file.c
@@ -833,21 +833,35 @@ repeat:
        mutex_lock(&kernfs_mutex);
 
        list_for_each_entry(info, &kernfs_root(kn)->supers, node) {
+               struct kernfs_node *parent;
                struct inode *inode;
-               struct dentry *dentry;
 
+               /*
+                * We want fsnotify_modify() on @kn but as the
+                * modifications aren't originating from userland don't
+                * have the matching @file available.  Look up the inodes
+                * and generate the events manually.
+                */
                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);
+               parent = kernfs_get_parent(kn);
+               if (parent) {
+                       struct inode *p_inode;
+
+                       p_inode = ilookup(info->sb, parent->ino);
+                       if (p_inode) {
+                               fsnotify(p_inode, FS_MODIFY | FS_EVENT_ON_CHILD,
+                                        inode, FSNOTIFY_EVENT_INODE, kn->name, 0);
+                               iput(p_inode);
+                       }
+
+                       kernfs_put(parent);
                }
 
+               fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE,
+                        kn->name, 0);
                iput(inode);
        }