diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-01-18 18:05:31 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.osdl.org> | 2004-01-18 18:05:31 -0800 |
| commit | 9644d0d98484be61fefb397ea59e8902046d98eb (patch) | |
| tree | 2ec3b28cf3805ddaa26403d42af48be3f058c8fb /drivers/block/loop.c | |
| parent | 59d997a581a444cac2facfed0feea408de40efdc (diff) | |
[PATCH] loop: fix hard sector size
From: Ben Slusky <sluskyb@paranoiacs.org>
We need to set the hardsect_size of the loop device to that of the real
device.
The loop device advertises a block size of 1024 even when configured over a
cdrom.
When burning a ext2 on a cd, and mounting it directly, I get:
blocksize=2048;
when I losetup /dev/loop0 /dev/cdrom, and then try to mount, I get:
blocksize=1024; and then misaligned transfer; this results in not being able
to read the superblock.
The loop device should be changed to export the same blocksize of the
underlying device
Diffstat (limited to 'drivers/block/loop.c')
| -rw-r--r-- | drivers/block/loop.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 8f66c6e457e7..0b6755114df5 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -732,8 +732,6 @@ static int loop_set_fd(struct loop_device *lo, struct file *lo_file, mapping_set_gfp_mask(inode->i_mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); - set_blocksize(bdev, lo_blocksize); - lo->lo_bio = lo->lo_biotail = NULL; /* @@ -752,11 +750,14 @@ static int loop_set_fd(struct loop_device *lo, struct file *lo_file, blk_queue_max_sectors(lo->lo_queue, q->max_sectors); blk_queue_max_phys_segments(lo->lo_queue,q->max_phys_segments); blk_queue_max_hw_segments(lo->lo_queue, q->max_hw_segments); + blk_queue_hardsect_size(lo->lo_queue, queue_hardsect_size(q)); blk_queue_max_segment_size(lo->lo_queue, q->max_segment_size); blk_queue_segment_boundary(lo->lo_queue, q->seg_boundary_mask); blk_queue_merge_bvec(lo->lo_queue, q->merge_bvec_fn); } + set_blocksize(bdev, lo_blocksize); + kernel_thread(loop_thread, lo, CLONE_KERNEL); down(&lo->lo_sem); |