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loop: check in LO_FLAGS_DIRECT_IO in loop_default_blocksize

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We can't go below the minimum direct I/O size no matter if direct I/O is
enabled by passing in an O_DIRECT file descriptor or due to the explicit
flag.  Now that LO_FLAGS_DIRECT_IO is set earlier after assigning a
backing file, loop_default_blocksize can check it instead of the
O_DIRECT flag to handle both conditions.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20250131120120.1315125-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2025-01-31 13:00:40 +01:00 committed by Jens Axboe
parent 984c2ab4b8
commit f6f9e32fe1
1 changed files with 1 additions and 1 deletions
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2
drivers/block/loop.c
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@ -980,7 +980,7 @@ static unsigned int loop_default_blocksize(struct loop_device *lo,
struct block_device *backing_bdev)
{
/* In case of direct I/O, match underlying block size */
if ((lo->lo_backing_file->f_flags & O_DIRECT) && backing_bdev)
if ((lo->lo_flags & LO_FLAGS_DIRECT_IO) && backing_bdev)
return bdev_logical_block_size(backing_bdev);
return SECTOR_SIZE;
}