RE: [PATCH] mm: remove BUG_ON() from mlock_vma_page()

-----Original Message-----
From: Sasha Levin [mailto:sasha.levin@oracle.com]
Sent: Sunday, February 23, 2014 2:32 PM
To: Andrew Morton; Bob Liu
Cc: linux-mm@kvack.org; walken@google.com; Motohiro Kosaki JP;
riel@redhat.com; vbabka@suse.cz; stable@kernel.org;
gregkh@linuxfoundation.org; Bob Liu
Subject: Re: [PATCH] mm: remove BUG_ON() from mlock_vma_page()

On 01/31/2014 03:33 PM, Andrew Morton wrote:

quoted

On Wed, 18 Dec 2013 08:42:49 +0800 Bob Liu[off-list ref]  wrote:

quoted

quoted

This BUG_ON() was triggered when called from try_to_unmap_cluster()
which didn't lock the page.
And it's safe to mlock_vma_page() without PageLocked, so this patch
fix this issue by removing that BUG_ON() simply.

This patch doesn't appear to be going anywhere, so I will drop it.
Please let's check to see whether the bug still exists and if so,
start another round of bugfixing.

This bug still happens on the latest -next kernel.

Yeah, I recognized it. I'm preparing new patch. Thanks.

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