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Commit 382329a9 authored by Gao Xiang's avatar Gao Xiang Committed by Greg Kroah-Hartman
Browse files

staging: erofs: differentiate unsupported on-disk format 



For some specific fields, use EOPNOTSUPP instead of EIO
for values which look sane but aren't supported right now.

Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarGao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190814103705.60698-2-gaoxiang25@huawei.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a6b9b1d5

drivers/staging/erofs/inode.c

+2 −2
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ static int read_inode(struct inode *inode, void *data) 
		errln("unsupported data mapping %u of nid %llu",

		      vi->datamode, vi->nid);

		DBG_BUGON(1);

		return -EIO;

		return -EOPNOTSUPP;

	}



	if (__inode_version(advise) == EROFS_INODE_LAYOUT_V2) {
@@ -95,7 +95,7 @@ static int read_inode(struct inode *inode, void *data) 
		errln("unsupported on-disk inode version %u of nid %llu",

		      __inode_version(advise), vi->nid);

		DBG_BUGON(1);

		return -EIO;

		return -EOPNOTSUPP;

	}



	if (!nblks)

drivers/staging/erofs/zmap.c

+3 −3
Original line number Diff line number Diff line
@@ -178,7 +178,7 @@ static int vle_legacy_load_cluster_from_disk(struct z_erofs_maprecorder *m, 
		break;

	default:

		DBG_BUGON(1);

		return -EIO;

		return -EOPNOTSUPP;

	}

	m->type = type;

	return 0;
@@ -362,7 +362,7 @@ static int vle_extent_lookback(struct z_erofs_maprecorder *m, 
		errln("unknown type %u at lcn %lu of nid %llu",

		      m->type, lcn, vi->nid);

		DBG_BUGON(1);

		return -EIO;

		return -EOPNOTSUPP;

	}

	return 0;

}
@@ -436,7 +436,7 @@ int z_erofs_map_blocks_iter(struct inode *inode, 
	default:

		errln("unknown type %u at offset %llu of nid %llu",

		      m.type, ofs, vi->nid);

		err = -EIO;

		err = -EOPNOTSUPP;

		goto unmap_out;

	}