Re: [RFC PATCH 4/6] xfs: take i_mmap_lock on extent manipulation operations

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On Thu, Jan 22, 2015 at 08:23:08AM -0500, Brian Foster wrote:
> On Thu, Jan 08, 2015 at 09:25:41AM +1100, Dave Chinner wrote:
> > diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
> > index 8be5bb5..f491860 100644
> > --- a/fs/xfs/xfs_iops.c
> > +++ b/fs/xfs/xfs_iops.c
> > @@ -768,7 +768,7 @@ xfs_setattr_size(
> >  	if (error)
> >  		return error;
> >  
> > -	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
> > +	ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL|XFS_MMAPLOCK_EXCL));
> 
> Only debug code of course, but xfs_isilocked() doesn't appear to support
> what is intended by this call (e.g., verification of multiple locks).

Ah, right. Didn't think that one though properly. I'll fix it up.

-Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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