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f2fs: recovery missing dot dentries in root directory 

If f2fs was corrupted with missing dot dentries in root dirctory,
it needs to recover them after fsck.f2fs set F2FS_INLINE_DOTS flag
in directory inode when fsck.f2fs detects missing dot dentries.

Signed-off-by: Xue Liu <liuxueliu.liu@huawei.com>
Signed-off-by: Yong Sheng <shengyong1@huawei.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Liu Xue 2016-02-26 06:39:23 +00:00 committed by Jaegeuk Kim
parent 19c7377b56
commit 8c2b1435b9
1 changed files with 7 additions and 0 deletions
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7
fs/f2fs/namei.c
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@ -260,6 +260,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
struct page *page;
nid_t ino;
int err = 0;
unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
if (dentry->d_name.len > F2FS_NAME_LEN)
return ERR_PTR(-ENAMETOOLONG);
@ -276,6 +277,12 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
if (IS_ERR(inode))
return ERR_CAST(inode);
if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
err = __recover_dot_dentries(dir, root_ino);
if (err)
goto err_out;
}
if (f2fs_has_inline_dots(inode)) {
err = __recover_dot_dentries(inode, dir->i_ino);
if (err)