f2fs: recover inline xattr data in roll-forward process

Previously we do not recover inline xattr data of inode after power-cut, so
inline xattr data may be lost.
We should recover the data during the roll-forward process.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index c415cec041b7..e72b2585de68 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1493,6 +1493,37 @@ void recover_node_page(struct f2fs_sb_info *sbi, struct page *page,
         clear_node_page_dirty(page);
 }
 
+void recover_inline_xattr(struct inode *inode, struct page *page)
+{
+        struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+        void *src_addr, *dst_addr;
+        size_t inline_size;
+        struct page *ipage;
+        struct f2fs_inode *ri;
+
+        if (!is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
+                return;
+
+        if (!IS_INODE(page))
+                return;
+
+        ri = F2FS_INODE(page);
+        if (!(ri->i_inline & F2FS_INLINE_XATTR))
+                return;
+
+        ipage = get_node_page(sbi, inode->i_ino);
+        f2fs_bug_on(IS_ERR(ipage));
+
+        dst_addr = inline_xattr_addr(ipage);
+        src_addr = inline_xattr_addr(page);
+        inline_size = inline_xattr_size(inode);
+
+        memcpy(dst_addr, src_addr, inline_size);
+
+        update_inode(inode, ipage);
+        f2fs_put_page(ipage, 1);
+}
+
 bool recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
 {
         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
@@ -1500,6 +1531,8 @@ bool recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
         nid_t new_xnid = nid_of_node(page);
         struct node_info ni;
 
+        recover_inline_xattr(inode, page);
+
         if (ofs_of_node(page) != XATTR_NODE_OFFSET)
                 return false;