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jfs: handle set_blocksize failures

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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 <hch@lst.de>
Link: https://patch.msgid.link/20260511071701.2456211-5-hch@lst.de
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig 2026-05-11 09:16:49 +02:00 committed by Christian Brauner
parent c7d911ea1c
commit 05107f5602
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1 changed files with 2 additions and 1 deletions
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3
fs/jfs/super.c
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@ -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.