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Re: [PATCH] xfstests 068: Add mmap load

To: Eric Sandeen <sandeen@xxxxxxxxxx>
Subject: Re: [PATCH] xfstests 068: Add mmap load
From: Mark Tinguely <tinguely@xxxxxxx>
Date: Mon, 01 Oct 2012 08:45:57 -0500
Cc: xfs-oss <xfs@xxxxxxxxxxx>
In-reply-to: <50651A99.1070307@xxxxxxxxxx>
References: <50651A99.1070307@xxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:9.0) Gecko/20120122 Thunderbird/9.0
On 09/27/12 22:33, Eric Sandeen wrote:
Test 068 is the go-to test for freeze deadlock coverage;
unfortunately it only uses fsstress, which doesn't do any mmap
IO.

Using the existing fstest binary gets us a cheap mmap exerciser
as well.

Signed-off-by: Eric Sandeen<sandeen@xxxxxxxxxx>
---

I think it's fair to modify this test vs. making a new one -
it's never passed yet, and will only start passing in kernel 3.6,
so it shouldn't cause new test regressions to add mmap ops.

And I can verify that this finds mmap bugs; I had a backport
which messed up ext4's freeze vs. mmap handling, and this exposes
it.  :)




Committed to git://oss.sgi.com/xfs/cmds/xfs.git, master branch.

--Mark.

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