linux-kernel - Re: [105/105] nfsd4: fix oops on lock failure

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Date:	Tue, 19 Apr 2011 17:33:31 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc:	"J. Bruce Fields" <bfields@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	stable@...nel.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Neil Brown <neilb@...e.de>,
	linux-nfs@...r.kernel.org
Subject: Re: [105/105] nfsd4: fix oops on lock failure

On Wed, Apr 20, 2011 at 06:17:03AM +0900, OGAWA Hirofumi wrote:
> "J. Bruce Fields" <bfields@...ldses.org> writes:
> 
> > On Tue, Apr 19, 2011 at 05:21:57PM +0900, OGAWA Hirofumi wrote:
> >> OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> writes:
> >> 
> >> >> I'll start test of this patch, and see what happens.
> >> >
> >> > OK. Although filp slabs are still slightly increasing (I'm not sure yet
> >> > whether this is leak of filp on system). But watching before/after
> >> > patch, the graph of filp slabs is clearly different.
> >> >
> >> > As far as I can say patches are fine.
> >> 
> >> slightly increasing was stopped at 2200-2300. filp leak seems to be fixed.
> >
> > Another thing to check is whether you can always unmount the exported
> > filesystem on the server after running your test.  So something like:
> >
> > 	service nfs stop
> > 	unmount /exports/fs
> >
> > should always succeed; if you get an inexplicable EBUSY on the final
> > unmount then we likely still have a leak someplace.
> 
> It succeeded.

Good, thanks.--b.
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