linux-kernel - Re: GFS2: Pre-pull patch posting (merge window)

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Date:	Fri, 23 Mar 2012 15:06:59 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	David Teigland <teigland@...hat.com>
CC:	Steven Whitehouse <swhiteho@...hat.com>,
	linux-kernel@...r.kernel.org, cluster-devel@...hat.com,
	bpoirier@...e.de
Subject: Re: GFS2: Pre-pull patch posting (merge window)

On 03/23/2012 01:18 PM, David Teigland wrote:

> On Fri, Mar 23, 2012 at 01:06:05PM -0700, Randy Dunlap wrote:
>>>> GFS2_FS selects DLM (if GFS2_FS_LOCKING_DLM, which is enabled).
>>>> GFS2_FS selects IP_SCTP if DLM_SCTP, which is not enabled and not
>>>> used anywhere else in the kernel tree AFAICT.
>>>> DLM just always selects IP_SCTP.
>>>
>>> Here's what we have now:
>>>
>>> config GFS2_FS
>>>         tristate "GFS2 file system support"
>>>         depends on (64BIT || LBDAF)
>>>         select DLM if GFS2_FS_LOCKING_DLM
>>>         select CONFIGFS_FS if GFS2_FS_LOCKING_DLM
>>>         select SYSFS if GFS2_FS_LOCKING_DLM
>>>         select IP_SCTP if DLM_SCTP
>>>         select FS_POSIX_ACL
>>>         select CRC32
>>>         select QUOTACTL
>>>
>>> menuconfig DLM
>>>         tristate "Distributed Lock Manager (DLM)"
>>>         depends on EXPERIMENTAL && INET
>>>         depends on SYSFS && CONFIGFS_FS && (IPV6 || IPV6=n)
>>>         select IP_SCTP
>>>
>>> Why does gfs2 Kconfig bother with SCTP at all?  It seems that line should
>>> just be removed.  I'll also remove EXPERIMENTAL.  I don't understand the
>>> vagaries of Kconfig, so a dumb question, how could sctp_do_peeloff
>>> possibly be undefined if we're selecting SCTP.
>>
>> What is selecting SCTP?  DLM?  so GFS2 selects DLM, but selects
>> don't follow dependency chains.  Also, the "select IP_SCTP if DLM_SCTP"
>> in GFS2 is meaningless since there is no DLM_SCTP.
> 
> https://lkml.org/lkml/2012/3/8/222 seems to have caused this by adding
> the new dependency on the sctp module without any Kconfig changes.

bad URL?  I don't see how that patch affects this area at all.

> Should that patch have added depends IP_SCTP to the dlm and gfs2?

Sounds reasonable (but I haven't seen the patch).


-- 
~Randy
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