[Drbd-dev] Re: your mail

[Lars Ellenberg]

On Thu, Jul 19, 2007 at 08:09:41PM +0800, lihua wrote:
> drbd-dev，
>     I have a Qs in function ensure_mdev in  drbd_nl.c
>     minor_to_mdev ensure mdev exist.
>     If it not exist ,we may create a device .Thus ,minor_table[nlp->drbd_minor] == NULL and mdev = NULL.
>     So :
> 
>             if(mdev){
>                 ......
>             } 
>     can't perform forever.
>     Is my mean right?
>                             2007-7月-日 

the inner part is only to avoid a race condition in case two commands
try to create the same device at the same time. it won't loop.


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