linux-kernel - Question about invalidate_inode_pages2

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Message-ID: <f2201a0b0910190116w29cd5e3w1ae2c76bd677f9ed@mail.gmail.com>
Date:	Mon, 19 Oct 2009 16:16:56 +0800
From:	Peng Tao <lkml.bergwolf@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Question about invalidate_inode_pages2_range()

Hi,

I've a question about invalidate_inode_pages2_range().

When does invalidate_inode_pages2_range() returns -EBUSY? It locks and
writes back the page. Why invalidate_complete_page2() still may fail
due to page dirtiness?

TIA.
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