linux-kernel - Re: [PATCH v4] tracing: remove igrab() iput() call from uprobes.c

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Message-ID: <9BEE77C2-B1BE-4697-919B-06997F05A0B0@fb.com>
Date:   Fri, 20 Apr 2018 18:36:38 +0000
From:   Song Liu <songliubraving@...com>
To:     Steven Rostedt <rostedt@...dmis.org>
CC:     LKML <linux-kernel@...r.kernel.org>,
        Kernel Team <Kernel-team@...com>,
        Ingo Molnar <mingo@...hat.com>,
        Howard McLauchlan <hmclauchlan@...com>,
        Josef Bacik <jbacik@...com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Miklos Szeredi <miklos@...redi.hu>
Subject: Re: [PATCH v4] tracing: remove igrab() iput() call from uprobes.c



> On Apr 20, 2018, at 11:29 AM, Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> On Fri, 20 Apr 2018 11:08:47 -0700
> Song Liu <songliubraving@...com> wrote:
> 
>> For uprobes.c sisde, igrab() is not necessary. So we removed it and
> 
> You don't need to send another patch, but what is the above sentence
> suppose to say?
> 
> -- Steve
> 

Sorry for the typo. I meant "For uprobes.c side". Or "it is not necessary
to call igrab() in uprobe_register(), as the caller is required to keep
the inode reference. 

Song


>> added comments on requirements to callers of uprobe_register().