From: Jinliang Zheng <alexjlzheng@xxxxxxxxxxx> iomap_folio_state marks the uptodate state in units of block_size, so it is better to check that pos and length are aligned with block_size. Signed-off-by: Jinliang Zheng <alexjlzheng@xxxxxxxxxxx> --- fs/iomap/buffered-io.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index fd827398afd2..934458850ddb 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -234,6 +234,9 @@ static void iomap_adjust_read_range(struct inode *inode, struct folio *folio, unsigned first = poff >> block_bits; unsigned last = (poff + plen - 1) >> block_bits; + BUG_ON(*pos & (block_size - 1)); + BUG_ON(length & (block_size - 1)); + /* * If the block size is smaller than the page size, we need to check the * per-block uptodate status and adjust the offset and length if needed -- 2.49.0
