f2fs: avoid not to call remove_dirty_inode

There is an errorneous case during the recovery like below.

In recovery_dentry,
 1) dir = f2fs_iget();
 2) mark the dir with FI_DELAY_IPUT
 3) goto unmap_out

After the end of recovery routine, there is no dirty dentries so the dir cannot
be released by iput in remove_dirty_dir_inode.

This patch fixes such the bug case by handling the iget and iput in the
recovery_dentry procedure.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index e950a2f..a112368 100644 (file)
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -52,20 +52,13 @@ static int recover_dentry(struct page *ipage, struct inode *inode)
                goto out;
        }
 
-       if (is_inode_flag_set(F2FS_I(dir), FI_DIRTY_DIR)) {
-               iput(dir);
-       } else {
-               add_dirty_dir_inode(dir);
-               set_inode_flag(F2FS_I(dir), FI_DELAY_IPUT);
-       }
-
        name.len = le32_to_cpu(raw_inode->i_namelen);
        name.name = raw_inode->i_name;
 
        if (unlikely(name.len > F2FS_NAME_LEN)) {
                WARN_ON(1);
                err = -ENAMETOOLONG;
-               goto out;
+               goto out_err;
        }
 retry:
        de = f2fs_find_entry(dir, &name, &page);
@@ -90,11 +83,23 @@ retry:
                goto retry;
        }
        err = __f2fs_add_link(dir, &name, inode);
+       if (err)
+               goto out_err;
+
+       if (is_inode_flag_set(F2FS_I(dir), FI_DELAY_IPUT)) {
+               iput(dir);
+       } else {
+               add_dirty_dir_inode(dir);
+               set_inode_flag(F2FS_I(dir), FI_DELAY_IPUT);
+       }
+
        goto out;
 
 out_unmap_put:
        kunmap(page);
        f2fs_put_page(page, 0);
+out_err:
+       iput(dir);
 out:
        f2fs_msg(inode->i_sb, KERN_NOTICE,
                        "%s: ino = %x, name = %s, dir = %lx, err = %d",