linux-kernel - Re: [PATCH] staging: lustre: cl_lock: Remove cl_lock_lockdep

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Date:	Fri, 13 Nov 2015 18:36:22 +0530
From:	Shivani Bhardwaj <shivanib134@...il.com>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>, devel@...verdev.osuosl.org,
	"Dilger, Andreas" <andreas.dilger@...el.com>,
	linux-kernel@...r.kernel.org,
	"Drokin, Oleg" <oleg.drokin@...el.com>, kbuild-all@...org,
	lustre-devel@...ts.lustre.org
Subject: Re: [PATCH] staging: lustre: cl_lock: Remove cl_lock_lockdep_init wrapper

On Fri, Nov 13, 2015 at 6:33 PM, Sudip Mukherjee
<sudipm.mukherjee@...il.com> wrote:
>
> On Wed, Nov 11, 2015 at 11:03:34PM +0530, Shivani Bhardwaj wrote:
> > On Wed, Nov 11, 2015 at 11:01 PM, Greg KH <gregkh@...uxfoundation.org> wrote:
> > > On Wed, Nov 11, 2015 at 10:51:36PM +0530, Shivani Bhardwaj wrote:
> > >> On Wed, Nov 11, 2015 at 4:24 PM, kbuild test robot <lkp@...el.com> wrote:
> <snip>
> > >>
> > >> I'm not getting any of these errors at compilation. I've checked
> > >> thrice. Could you please tell what am I doing wrong so that I can
> > >> avoid introducing errors in future patches?
> > >
> > > Use the .config provided, odds are you have lockdep enabled.
> >
> > Thanks Greg.
> > I tried that. Still no errors. Any other suggestion?
>
> while removing the wrapper you missed that cl_lock_lockdep_init() is:
>
> static void cl_lock_lockdep_init(struct cl_lock *lock)
> {
>                 lockdep_set_class_and_name(lock, &cl_lock_key, "EXT");
> }
>
> if CONFIG_LOCKDEP is defined.
> and if CONFIG_LOCKDEP is not defined then:
>
> static void cl_lock_lockdep_init(struct cl_lock *lock)
> {}
>
> your patch is using lockdep_set_class_and_name() in both cases.
>

Yes! This is the problem.
Thank you Sudip.

> regards
> sudip
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