[PATCH 07/10] isofs: handle set_blocksize failures

isofs uses buffer_heads, which don't handle block size > PAGE_SIZE well.
Without this, mounting we will hit the

        BUG_ON(offset >= folio_size(folio));

in folio_set_bh on the first __bread_gfp call.

Signed-off-by: Christoph Hellwig <[email protected]>
---
 fs/isofs/inode.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index efee53717f1c..337836a0a170 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -818,7 +818,8 @@ static int isofs_fill_super(struct super_block *s, struct fs_context *fc)
 	 * entries.  By forcing the blocksize in this way, we ensure
 	 * that we will never be required to do this.
 	 */
-	sb_set_blocksize(s, orig_zonesize);
+	if (!sb_set_blocksize(s, orig_zonesize))
+		goto out_freesbi;
 
 	sbi->s_nls_iocharset = NULL;
 
-- 
2.53.0