[PATCH 04/10] jfs: handle set_blocksize failures

jfs 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/jfs/super.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 61575f7397ae..8180d83d33fe 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -491,7 +491,8 @@ static int jfs_fill_super(struct super_block *sb, struct fs_context *fc)
 	/*
 	 * Initialize blocksize to 4K.
 	 */
-	sb_set_blocksize(sb, PSIZE);
+	if (!sb_set_blocksize(sb, PSIZE))
+		goto out_unload;
 
 	/*
 	 * Set method vectors.
-- 
2.53.0