Merge branch 'stable-3.2' into pandora-3.2

[pandora-kernel.git] / fs / ubifs / xattr.c

diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index 166ff21..682ab08 100644 (file)
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -481,6 +481,28 @@ ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size)
        return written;
 }
 
+/**
+ * ubifs_evict_xattr_inode - Evict an xattr inode.
+ * @c: UBIFS file-system description object
+ * @xattr_inum: xattr inode number
+ *
+ * When an inode that hosts xattrs is being removed we have to make sure
+ * that cached inodes of the xattrs also get removed from the inode cache
+ * otherwise we'd waste memory. This function looks up an inode from the
+ * inode cache and clears the link counter such that iput() will evict
+ * the inode.
+ */
+void ubifs_evict_xattr_inode(struct ubifs_info *c, ino_t xattr_inum)
+{
+       struct inode *inode;
+
+       inode = ilookup(c->vfs_sb, xattr_inum);
+       if (inode) {
+               clear_nlink(inode);
+               iput(inode);
+       }
+}
+
 static int remove_xattr(struct ubifs_info *c, struct inode *host,
                        struct inode *inode, const struct qstr *nm)
 {