1 files changed, 16 insertions, 19 deletions

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 2ca7a7cafdbf..9f0bf13291e5 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -35,14 +35,13 @@ static int anon_inodefs_get_sb(struct file_system_type *fs_type, int flags,
                              mnt);
 }
 
-static int anon_inodefs_delete_dentry(struct dentry *dentry)
+/*
+ * anon_inodefs_dname() is called from d_path().
+ */
+static char *anon_inodefs_dname(struct dentry *dentry, char *buffer, int buflen)
 {
-        /*
-         * We faked vfs to believe the dentry was hashed when we created it.
-         * Now we restore the flag so that dput() will work correctly.
-         */
-        dentry->d_flags |= DCACHE_UNHASHED;
-        return 1;
+        return dynamic_dname(dentry, buffer, buflen, "anon_inode:%s",
+                                dentry->d_name.name);
 }
 
 static struct file_system_type anon_inode_fs_type = {
@@ -51,7 +50,7 @@ static struct file_system_type anon_inode_fs_type = {
         .kill_sb        = kill_anon_super,
 };
 static const struct dentry_operations anon_inodefs_dentry_operations = {
-        .d_delete       = anon_inodefs_delete_dentry,
+        .d_dname        = anon_inodefs_dname,
 };
 
 /*
@@ -88,7 +87,7 @@ struct file *anon_inode_getfile(const char *name,
                                 void *priv, int flags)
 {
         struct qstr this;
-        struct dentry *dentry;
+        struct path path;
         struct file *file;
         int error;
 
@@ -106,10 +105,11 @@ struct file *anon_inode_getfile(const char *name,
         this.name = name;
         this.len = strlen(name);
         this.hash = 0;
-        dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
-        if (!dentry)
+        path.dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
+        if (!path.dentry)
                 goto err_module;
 
+        path.mnt = mntget(anon_inode_mnt);
         /*
          * We know the anon_inode inode count is always greater than zero,
          * so we can avoid doing an igrab() and we can use an open-coded
@@ -117,27 +117,24 @@ struct file *anon_inode_getfile(const char *name,
          */
         atomic_inc(&anon_inode_inode->i_count);
 
-        dentry->d_op = &anon_inodefs_dentry_operations;
-        /* Do not publish this dentry inside the global dentry hash table */
-        dentry->d_flags &= ~DCACHE_UNHASHED;
-        d_instantiate(dentry, anon_inode_inode);
+        path.dentry->d_op = &anon_inodefs_dentry_operations;
+        d_instantiate(path.dentry, anon_inode_inode);
 
         error = -ENFILE;
-        file = alloc_file(anon_inode_mnt, dentry,
-                          FMODE_READ | FMODE_WRITE, fops);
+        file = alloc_file(&path, OPEN_FMODE(flags), fops);
         if (!file)
                 goto err_dput;
         file->f_mapping = anon_inode_inode->i_mapping;
 
         file->f_pos = 0;
-        file->f_flags = O_RDWR | (flags & O_NONBLOCK);
+        file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
         file->f_version = 0;
         file->private_data = priv;
 
         return file;
 
 err_dput:
-        dput(dentry);
+        path_put(&path);
 err_module:
         module_put(fops->owner);
         return ERR_PTR(error);