[PATCH 03/10] qnx4: handle set_blocksize failures

qnx4 uses buffer_heads, which don't handle block size > PAGE_SIZE well.
Without this, mounting 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/qnx4/inode.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 4deb0eeadbde..42fcd500fad2 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -202,7 +202,8 @@ static int qnx4_fill_super(struct super_block *s, struct fs_context *fc)
 		return -ENOMEM;
 	s->s_fs_info = qs;
 
-	sb_set_blocksize(s, QNX4_BLOCK_SIZE);
+	if (!sb_set_blocksize(s, QNX4_BLOCK_SIZE))
+		return -EINVAL;
 
 	s->s_op = &qnx4_sops;
 	s->s_magic = QNX4_SUPER_MAGIC;
-- 
2.53.0