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mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-01-12 09:32:12 +00:00
Yongpeng Yang 8637fa89e6
block: add __must_check attribute to sb_min_blocksize()
When sb_min_blocksize() returns 0 and the return value is not checked,
it may lead to a situation where sb->s_blocksize is 0 when
accessing the filesystem super block. After commit a64e5a596067bd
("bdev: add back PAGE_SIZE block size validation for
sb_set_blocksize()"), this becomes more likely to happen when the
block device’s logical_block_size is larger than PAGE_SIZE and the
filesystem is unformatted. Add the __must_check attribute to ensure
callers always check the return value.

Cc: stable@vger.kernel.org # v6.15
Suggested-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Yongpeng Yang <yangyongpeng@xiaomi.com>
Link: https://patch.msgid.link/20251104125009.2111925-6-yangyongpeng.storage@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-11-05 14:00:16 +01:00
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