On 17.01.2018 07:17, Qu Wenruo wrote:
> For repair_ternary_lowmem() used in lowmem mode, if it found 1 of
> DIR_INDEX/DIR_ITEM/INODE_REF missing, it will try to insert correct
> link.
>
> However for case like invalid type in DIR_INDEX, we should delete the
> corrupted DIR_INDEX first before inserting the correct link.
>
> This patch will remove the corrupted link before re-insert.
> This should solve the duplicated DIR_INDEX problem in old lowmem mode
> repair.
>
> Cc: Sebastian Andrzej Siewior <sebast...@breakpoint.cc>
> Signed-off-by: Qu Wenruo <w...@suse.com>
Reviewed-by: Nikolay Borisov <nbori...@suse.com>
> ---
> cmds-check.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/cmds-check.c b/cmds-check.c
> index 7fc30da83ea1..f302724dd840 100644
> --- a/cmds-check.c
> +++ b/cmds-check.c
> @@ -4997,6 +4997,10 @@ int repair_ternary_lowmem(struct btrfs_root *root, u64
> dir_ino, u64 ino,
> goto out;
> }
> if (stage == 1) {
> + ret = btrfs_unlink(trans, root, ino, dir_ino, index, name,
> + name_len, 0);
> + if (ret)
> + goto out;
> ret = btrfs_add_link(trans, root, ino, dir_ino, name, name_len,
> filetype, &index, 1, 1);
> goto out;
>
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