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Re: [dm-devel] linux-next - WARNING: at fs/block_dev.c:824 bd_link_disk_holder+0x92/0x1ac()

On 01/13/2011 03:11 PM, Tejun Heo wrote:

> So, as a general rule, when in doubt, just create an attribute.  Let's
> refrain from custom symlinkery in sysfs, please.  In this case too, a
> holder attribute containing strings like ext[3|4], md, dm or whatnot
> would have been _much_ simpler and actually more useful.

Maybe, but this was not invented in DM/MD camp:-)
Probably Kay or Greg can answer why it was done this way?

For DM it just added links to be proper user of it, see

Anyway, it is /sys/block - so it represents block devices.

If btrfs internally creates some virtual _block_ device for its pool, it should
present it here too with slaves/holders. If not, why it should create any links there?


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