linux-kernel - Re: [PATCH 1/9] staging/lustre/llite: Access to released file trigs a restore

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Date:	Wed, 20 Nov 2013 15:35:36 +0800
From:	Peng Tao <bergwolf@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	JC Lafoucriere <jacques-charles.lafoucriere@....fr>,
	Andreas Dilger <andreas.dilger@...el.com>
Subject: Re: [PATCH 1/9] staging/lustre/llite: Access to released file trigs a restore

On Wed, Nov 20, 2013 at 2:29 AM, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> "trigs"?  Come on, we don't have a lack of characters here...
>
Will fix up.

> On Tue, Nov 19, 2013 at 09:23:40PM +0800, Peng Tao wrote:
>> From: JC Lafoucriere <jacques-charles.lafoucriere@....fr>
>>
>> When a client accesses data in a released file,
>> or truncate it, client must trig a restore request.
>> During this restore, the client must not glimpse and
>> must use size from MDT. To bring the "restore is running"
>> information on the client we add a new t_state bit field
>> to mdt_info which will be used to carry transient file state.
>> To memorise this information in the inode we add a new flag
>> LLIF_FILE_RESTORING.
>>
>> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3432
>> Lustre-change: http://review.whamcloud.com/6537
>> Signed-off-by: JC Lafoucriere <jacques-charles.lafoucriere@....fr>
>> Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
>> Tested-by: Oleg Drokin <oleg.drokin@...el.com>
>> Signed-off-by: Peng Tao <bergwolf@...il.com>
>> Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
>> ---
>>  drivers/staging/lustre/lustre/include/cl_object.h  |    6 ++-
>>  .../lustre/lustre/include/lustre/lustre_idl.h      |   14 +++--
>>  drivers/staging/lustre/lustre/lclient/lcommon_cl.c |    6 +++
>>  drivers/staging/lustre/lustre/llite/file.c         |   39 +++++++++++++-
>>  .../staging/lustre/lustre/llite/llite_internal.h   |    3 ++
>>  drivers/staging/lustre/lustre/llite/llite_lib.c    |   36 +++++++++++++
>>  drivers/staging/lustre/lustre/llite/vvp_io.c       |   54 ++++++++++++++++++--
>>  drivers/staging/lustre/lustre/lov/lov_io.c         |   15 ++++--
>>  .../staging/lustre/lustre/ptlrpc/pack_generic.c    |    2 +-
>>  drivers/staging/lustre/lustre/ptlrpc/wiretest.c    |   17 +++---
>>  10 files changed, 168 insertions(+), 24 deletions(-)
>
> This patch has checkpatch errors, sorry, please fix them before sending
> them again.
>
The "quoted string split across lines" warning is a bit confusing.

WARNING: quoted string split across lines
#265: FILE: drivers/staging/lustre/lustre/llite/vvp_io.c:125:
+       CDEBUG(D_VFSTRACE, DFID" ignore/verify layout %d/%d, layout version %d "
+                          "restore needed %d\n",

If I put the quoted string in the same line, I got

WARNING: line over 80 characters
#264: FILE: drivers/staging/lustre/lustre/llite/vvp_io.c:124:
+       CDEBUG(D_VFSTRACE, DFID" ignore/verify layout %d/%d, layout
version %d restore needed %d\n",

So one way or another, the patch breaks a rule.

Looking at scripts/checkpatch.pl commit log, I saw

commit ca56dc098caf93b5437cd6c4ee49f02aa18f84d6
Author: Josh Triplett <josh@...htriplett.org>
Date:   Fri Mar 23 15:02:21 2012 -0700

    checkpatch: check for quoted strings broken across lines

    checkpatch already makes an exception to the 80-column rule for quoted
    strings, and Documentation/CodingStyle recommends not splitting quoted
    strings across lines, because it breaks the ability to grep for the
    string.  Rather than just permitting this, actively warn about quoted
    strings split across lines.

But it seems that the exception for quoted strings to the 80-column
rule no longer holds?

Thanks,
Tao
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