openwrt/target/linux/generic/patches-3.18/550-ubifs-symlink-xattr-support.patch

--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1573,6 +1573,10 @@ const struct inode_operations ubifs_syml
 	.follow_link = ubifs_follow_link,
 	.setattr     = ubifs_setattr,
 	.getattr     = ubifs_getattr,
+	.setxattr    = ubifs_setxattr,
+	.getxattr    = ubifs_getxattr,
+	.listxattr   = ubifs_listxattr,
+	.removexattr = ubifs_removexattr,
 };
 
 const struct file_operations ubifs_file_operations = {
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -572,6 +572,13 @@ int ubifs_jnl_update(struct ubifs_info *
 	aligned_dlen = ALIGN(dlen, 8);
 	aligned_ilen = ALIGN(ilen, 8);
 	len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
+	if (xent) {
+		/*
+		 * Make sure to account for host_ui->data_len in
+		 * length calculation in case there is extended attribute.
+		 */
+		len += host_ui->data_len;
+	}
 	dent = kmalloc(len, GFP_NOFS);
 	if (!dent)
 		return -ENOMEM;
@@ -648,7 +655,8 @@ int ubifs_jnl_update(struct ubifs_info *
 
 	ino_key_init(c, &ino_key, dir->i_ino);
 	ino_offs += aligned_ilen;
-	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
+	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,
+			    UBIFS_INO_NODE_SZ + host_ui->data_len);
 	if (err)
 		goto out_ro;
 
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -209,12 +209,12 @@ static int change_xattr(struct ubifs_inf
 		goto out_free;
 	}
 	inode->i_size = ui->ui_size = size;
-	ui->data_len = size;
 
 	mutex_lock(&host_ui->ui_mutex);
 	host->i_ctime = ubifs_current_time(host);
 	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
 	host_ui->xattr_size += CALC_XATTR_BYTES(size);
+	ui->data_len = size;
 
 	/*
 	 * It is important to write the host inode after the xattr inode