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erofs: allow empty device tags in flatdev mode

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Device tags aren't actually required in flatdev mode, thus fix mount
failure due to empty device tags in flatdev mode.

Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Fixes: 8b465fecc3 ("erofs: support flattened block device for multi-blob images")
Reviewed-by: Jia Zhu <zhujia.zj@bytedance.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230915082728.56588-1-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
This commit is contained in:
Jingbo Xu 2023-09-15 16:27:28 +08:00 committed by Gao Xiang
parent 75a5221630
commit f939aeea7a
1 changed files with 1 additions and 1 deletions
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2
fs/erofs/super.c
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@ -235,7 +235,7 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
return PTR_ERR(ptr);
dis = ptr + erofs_blkoff(sb, *pos);
if (!dif->path) {
if (!sbi->devs->flatdev && !dif->path) {
if (!dis->tag[0]) {
erofs_err(sb, "empty device tag @ pos %llu", *pos);
return -EINVAL;