From: David Howells <dhowells@redhat.com>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: dhowells@redhat.com, Trond.Myklebust@netapp.com, olof@lixom.net,
linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 0/4] SunRPC/NFS: Use no_printk() in
Date: Thu, 26 Sep 2013 16:27:39 +0100 [thread overview]
Message-ID: <30413.1380209259@warthog.procyon.org.uk> (raw)
In-Reply-To: <20130926152125.GD704@fieldses.org>
J. Bruce Fields <bfields@fieldses.org> wrote:
> > Here's a series of patches to make SunRPC/NFS use no_printk() to implement
> > its null dfprintk() macro (ie. when RPC_DEBUG is disabled). This prevents
> > 'unused variable' errors from occurring when a variable is set only for
> > use in debugging statements and renders RPC/NFS_IFDEBUG unnecessary.
>
> Does this patch series fix any actual warnings? Or does it just change
> the way that we prevent the warnings?
It fixes some unused variable warnings introduced by NFS FS-Cache patches that
I have (a variable is set up and only passed to dfprintk() a couple of times).
I could change those patches to do something different, but I think changing
dfprintk() is actually the right solution as it will catch errors introduced
into dfprintk() calls that are currently reduced to do{}while(0) by the
preprocessor rather than letting the compiler chew on them and then reducing
them to nothing with the optimiser.
David
prev parent reply other threads:[~2013-09-26 15:27 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-26 14:45 [RFC][PATCH 0/4] SunRPC/NFS: Use no_printk() in David Howells
2013-09-26 14:45 ` [PATCH 1/4] SunRPC: Use the standard varargs macro method for dfprintk() and co David Howells
2013-09-26 14:45 ` [PATCH 2/4] SunRPC: Declare and use rpc_task_pid() to wrap task->tk_pid David Howells
2013-09-26 14:45 ` [PATCH 3/4] SunRPC: Use no_printk() for the null dprintk() and dfprintk() David Howells
2013-09-26 15:30 ` Joe Perches
2013-09-26 15:35 ` David Howells
2013-09-26 15:38 ` Joe Perches
2013-09-26 15:42 ` Myklebust, Trond
2013-09-26 15:42 ` David Howells
2013-09-26 14:45 ` [PATCH 4/4] SunRPC: Kill RPC_IFDEBUG() and NFS_IFDEBUG() David Howells
2013-09-26 14:48 ` [PATCH 2/4] SunRPC: Declare and use rpc_task_pid() to wrap task->tk_pid David Howells
2013-09-26 15:21 ` [RFC][PATCH 0/4] SunRPC/NFS: Use no_printk() in J. Bruce Fields
2013-09-26 15:23 ` Myklebust, Trond
2013-09-26 15:27 ` David Howells [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=30413.1380209259@warthog.procyon.org.uk \
--to=dhowells@redhat.com \
--cc=Trond.Myklebust@netapp.com \
--cc=bfields@fieldses.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-nfs@vger.kernel.org \
--cc=olof@lixom.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).