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

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Date:	Fri, 23 Mar 2012 16:18:20 -0400
From:	David Teigland <teigland@...hat.com>
To:	Randy Dunlap <rdunlap@...otime.net>
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 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.

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

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