diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-06-17 08:04:34 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-06-19 15:58:28 +0200 |
| commit | 4ce37fe0938b02b7b947029c40b72d76a22a3882 (patch) | |
| tree | 2e6d78a54e8e7071e347f59cde2123ff10cd7359 /drivers/block/loop.c | |
| parent | loop: regularize upgrading the block size for direct I/O (diff) | |
| download | linux-4ce37fe0938b02b7b947029c40b72d76a22a3882.tar.xz linux-4ce37fe0938b02b7b947029c40b72d76a22a3882.zip | |
loop: also use the default block size from an underlying block device
Fix the code in loop_reconfigure_limits to pick a default block size for
O_DIRECT file descriptors to also work when the loop device sits on top
of a block device and not just on a regular file on a block device based
file system.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20240617060532.127975-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/block/loop.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index eea3e4919e35..6a4826708a3a 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -988,10 +988,16 @@ static int loop_reconfigure_limits(struct loop_device *lo, unsigned short bsize) { struct file *file = lo->lo_backing_file; struct inode *inode = file->f_mapping->host; + struct block_device *backing_bdev = NULL; struct queue_limits lim; + if (S_ISBLK(inode->i_mode)) + backing_bdev = I_BDEV(inode); + else if (inode->i_sb->s_bdev) + backing_bdev = inode->i_sb->s_bdev; + if (!bsize) - bsize = loop_default_blocksize(lo, inode->i_sb->s_bdev); + bsize = loop_default_blocksize(lo, backing_bdev); lim = queue_limits_start_update(lo->lo_queue); lim.logical_block_size = bsize; |