Re: loop device broken in 2.4.6-pre5

[Jari Ruusu <jari.ruusu@pp.inet.fi>]

Andries.Brouwer@cwi.nl wrote:
>     From jari.ruusu@pp.inet.fi Tue Jun 26 10:20:51 2001
> 
>     This patch fixes the problem. Please consider applying.
> 
>     --- linux-2.4.6-pre5/drivers/block/loop.c    Sat Jun 23 07:52:39 2001
>     +++ linux/drivers/block/loop.c    Tue Jun 26 09:21:47 2001
>     @@ -653,7 +653,7 @@
>          bs = 0;
>          if (blksize_size[MAJOR(lo_device)])
>              bs = blksize_size[MAJOR(lo_device)][MINOR(lo_device)];
>     -    if (!bs)
>     +    if (!bs || S_ISREG(inode->i_mode))
>              bs = BLOCK_SIZE;
> 
>          set_blocksize(dev, bs);
> 
> But why 1024? Next week your neighbour comes and has a file-backed
> loop device with an odd number of 512-byte sectors.
> If you want a guarantee, then I suppose one should pick 512.
> (Or make the set blocksize ioctl also work on loop devices.)

Because 1024 was the previous default. Keeping the same default that was
used before offers least surprises to users and tools.

Regards,
Jari Ruusu <jari.ruusu@pp.inet.fi>