f2fs: update file name in the inode block during f2fs_rename

The error is reproducible by:
0. mkfs.f2fs /dev/sdb1 & mount
1. touch test1
2. touch test2
3. mv test1 test2
4. umount
5. dumpt.f2fs -i 4 /dev/sdb1

After this, when we retrieve the inode->i_name of test2 by dump.f2fs, we get
test1 instead of test2.
This is because f2fs didn't update the file name during the f2fs_rename.

So, this patch fixes that.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 89ecb37..d1bb260 100644 (file)
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -276,6 +276,21 @@ static void init_dent_inode(const struct qstr *name, struct page *ipage)
        set_page_dirty(ipage);
 }
 
+int update_dent_inode(struct inode *inode, const struct qstr *name)
+{
+       struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+       struct page *page;
+
+       page = get_node_page(sbi, inode->i_ino);
+       if (IS_ERR(page))
+               return PTR_ERR(page);
+
+       init_dent_inode(name, page);
+       f2fs_put_page(page, 1);
+
+       return 0;
+}
+
 static int make_empty_dir(struct inode *inode,
                struct inode *parent, struct page *page)
 {

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 2dfd584..a6858c7 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -953,6 +953,7 @@ struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
 ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
                                struct page *, struct inode *);
+int update_dent_inode(struct inode *, const struct qstr *);
 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
 int f2fs_make_empty(struct inode *, struct inode *);

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 64c0716..3297278 100644 (file)
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -427,6 +427,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
                if (!new_entry)
                        goto out_dir;
 
+               if (update_dent_inode(old_inode, &new_dentry->d_name)) {
+                       f2fs_put_page(new_page, 1);
+                       goto out_dir;
+               }
+
                f2fs_set_link(new_dir, new_entry, new_page, old_inode);
 
                new_inode->i_ctime = CURRENT_TIME;