* [Drbd-dev] Re: your mail
[not found] <DreamMail__200941_89074845882@smtp.163.com>
@ 2007-07-21 14:24 ` Lars Ellenberg
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From: Lars Ellenberg @ 2007-07-21 14:24 UTC (permalink / raw)
To: lihua; +Cc: drbd-dev
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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: Lars Ellenberg Tel +43-1-8178292-0 :
: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
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[not found] <DreamMail__200941_89074845882@smtp.163.com>
2007-07-21 14:24 ` [Drbd-dev] Re: your mail Lars Ellenberg
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