f2fs: add the truncate_xattr_node function
The truncate_xattr_node function will be used by inline xattr.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index f0e733b..2a464a7 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -772,6 +772,29 @@
return err > 0 ? 0 : err;
}
+int truncate_xattr_node(struct inode *inode, struct page *page)
+{
+ struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+ nid_t nid = F2FS_I(inode)->i_xattr_nid;
+ struct dnode_of_data dn;
+ struct page *npage;
+
+ if (!nid)
+ return 0;
+
+ npage = get_node_page(sbi, nid);
+ if (IS_ERR(npage))
+ return PTR_ERR(npage);
+
+ F2FS_I(inode)->i_xattr_nid = 0;
+ set_new_dnode(&dn, inode, page, npage, nid);
+
+ if (page)
+ dn.inode_page_locked = 1;
+ truncate_node(&dn);
+ return 0;
+}
+
/*
* Caller should grab and release a mutex by calling mutex_lock_op() and
* mutex_unlock_op().
@@ -782,22 +805,16 @@
struct page *page;
nid_t ino = inode->i_ino;
struct dnode_of_data dn;
+ int err;
page = get_node_page(sbi, ino);
if (IS_ERR(page))
return PTR_ERR(page);
- if (F2FS_I(inode)->i_xattr_nid) {
- nid_t nid = F2FS_I(inode)->i_xattr_nid;
- struct page *npage = get_node_page(sbi, nid);
-
- if (IS_ERR(npage))
- return PTR_ERR(npage);
-
- F2FS_I(inode)->i_xattr_nid = 0;
- set_new_dnode(&dn, inode, page, npage, nid);
- dn.inode_page_locked = 1;
- truncate_node(&dn);
+ err = truncate_xattr_node(inode, page);
+ if (err) {
+ f2fs_put_page(page, 1);
+ return err;
}
/* 0 is possible, after f2fs_new_inode() is failed */