linux-kernel - Re: Unionmount and overlayfs testsuite

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Date:	Tue, 3 Jun 2014 11:42:32 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Sedat Dilek <sedat.dilek@...il.com>
Cc:	David Howells <dhowells@...hat.com>,
	"J. R. Okajima" <hooanon05g@...il.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Robo Bot <apw@...onical.com>, Felix Fietkau <nbd@...nwrt.org>,
	Neil Brown <neilb@...e.de>,
	Jordi Pujol <jordipujolp@...il.com>, ezk@....cs.sunysb.edu,
	"mszeredi@...e.cz" <mszeredi@...e.cz>
Subject: Re: Unionmount and overlayfs testsuite

On Tue, Jun 3, 2014 at 11:26 AM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> On Tue, Jun 3, 2014 at 11:18 AM, Sedat Dilek <sedat.dilek@...il.com> wrote:
>> [...]
>>>> [ NOTE-2: The call-trace I have seen once (TERMSLASH=0). ]
>>>
>>> Do you know for which operation?

This still looks like the same annotation problem in
generic_file_splice_write() I already sent a patch for.

Fix now pushed to overlayfs.v22/overlayfs.current.

Also added ops to shmem to support the cases where RENAME_EXCHANGE and
RENAME_WHITEOUT are needed.  Not sure if the testsuite goes into these
at all, but anyway.

If I remove the assert_early_copy_up calls from impermissible.test
(which seem to be bogus), then the suite passes for overlayfs without
lockdep problems for me.

Thanks,
Miklos
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