* block device size in 2.5
@ 2002-10-03 10:34 Joe Thornber
2002-10-03 10:46 ` Alexander Viro
0 siblings, 1 reply; 4+ messages in thread
From: Joe Thornber @ 2002-10-03 10:34 UTC (permalink / raw)
To: Linux Mailing List
Why is the total size of a block device held in struct gendisk rather
than struct block_device ?
Joe Thornber
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: block device size in 2.5
2002-10-03 10:34 block device size in 2.5 Joe Thornber
@ 2002-10-03 10:46 ` Alexander Viro
2002-10-03 10:56 ` Joe Thornber
0 siblings, 1 reply; 4+ messages in thread
From: Alexander Viro @ 2002-10-03 10:46 UTC (permalink / raw)
To: Joe Thornber; +Cc: Linux Mailing List
On Thu, 3 Oct 2002, Joe Thornber wrote:
> Why is the total size of a block device held in struct gendisk rather
> than struct block_device ?
It is mirrored into bdev->bd_inode->i_size. However, struct block_device
is not persistent - persistent stuff lives in struct gendisk.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: block device size in 2.5
2002-10-03 10:46 ` Alexander Viro
@ 2002-10-03 10:56 ` Joe Thornber
2002-10-03 11:01 ` Alexander Viro
0 siblings, 1 reply; 4+ messages in thread
From: Joe Thornber @ 2002-10-03 10:56 UTC (permalink / raw)
To: Alexander Viro; +Cc: Linux Mailing List
On Thu, Oct 03, 2002 at 06:46:30AM -0400, Alexander Viro wrote:
>
>
> On Thu, 3 Oct 2002, Joe Thornber wrote:
>
> > Why is the total size of a block device held in struct gendisk rather
> > than struct block_device ?
>
> It is mirrored into bdev->bd_inode->i_size. However, struct block_device
> is not persistent - persistent stuff lives in struct gendisk.
Thanks.
Is gendisk the right name for that structure now ? Since all block
devices now have to use it. I've always avoided using gendisk before,
arguing that dm produces block devices, not disks. I don't need
partitions and I don't particularly want the devices to appear in
/proc/partitions.
Joe Thornber
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: block device size in 2.5
2002-10-03 10:56 ` Joe Thornber
@ 2002-10-03 11:01 ` Alexander Viro
0 siblings, 0 replies; 4+ messages in thread
From: Alexander Viro @ 2002-10-03 11:01 UTC (permalink / raw)
To: Joe Thornber; +Cc: Linux Mailing List
On Thu, 3 Oct 2002, Joe Thornber wrote:
> Is gendisk the right name for that structure now ? Since all block
> devices now have to use it. I've always avoided using gendisk before,
> arguing that dm produces block devices, not disks. I don't need
> partitions and I don't particularly want the devices to appear in
> /proc/partitions.
*shrug* Probably we should change the name at some point. struct gendisk
was the best starting point for creating such structure...
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2002-10-03 10:56 UTC | newest]
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2002-10-03 10:34 block device size in 2.5 Joe Thornber
2002-10-03 10:46 ` Alexander Viro
2002-10-03 10:56 ` Joe Thornber
2002-10-03 11:01 ` Alexander Viro
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