Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion

To:	Dave Chinner <david@xxxxxxxxxxxxx>
Subject:	Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion
From:	Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date:	Thu, 8 Jan 2015 04:24:48 -0800
Cc:	xfs@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
Delivered-to:	xfs@xxxxxxxxxxx
In-reply-to:	<1420669543-8093-1-git-send-email-david@xxxxxxxxxxxxx>
References:	<1420669543-8093-1-git-send-email-david@xxxxxxxxxxxxx>
User-agent:	Mutt/1.5.23 (2014-03-12)

> This patchset passes xfstests and various benchmarks and stress
> workloads, so the real question is now:
> 
>       What have I missed?
> 
> Comments, thoughts, flames?

Why is this done in XFS and not in generic code?

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[RFC PATCH 5/6] xfs: xfs_setattr_size no longer races with page faults, (continued) [RFC PATCH 5/6] xfs: xfs_setattr_size no longer races with page faults, Dave Chinner [RFC PATCH 3/6] xfs: use i_mmaplock on write faults, Dave Chinner [RFC PATCH 4/6] xfs: take i_mmap_lock on extent manipulation operations, Dave Chinner Re: [RFC PATCH 4/6] xfs: take i_mmap_lock on extent manipulation operations, Brian Foster Re: [RFC PATCH 4/6] xfs: take i_mmap_lock on extent manipulation operations, Dave Chinner [RFC PATCH 2/6] xfs: use i_mmaplock on read faults, Dave Chinner [RFC PATCH 1/6] xfs: introduce mmap/truncate lock, Dave Chinner Re: [RFC PATCH 1/6] xfs: introduce mmap/truncate lock, Brian Foster Re: [RFC PATCH 1/6] xfs: introduce mmap/truncate lock, Dave Chinner Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion, Jan Kara Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion, Christoph Hellwig <= Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion, Dave Chinner Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion, Jan Kara Re: [RFC PATCH 0/6] xfs: truncate vs page fault IO exclusion, Dave Chinner

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