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Re: [PATCH 4/5] writeback: remove pages_skipped accounting in __block_write_full_page()

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From: Andrew Morton <akpm@...>
To: Fengguang Wu <wfg@...>
Cc: <linux-kernel@...>, <dgc@...>, <kenchen@...>, <mrubin@...>
Subject: Re: [PATCH 4/5] writeback: remove pages_skipped accounting in __block_write_full_page()
Date: Thursday, October 4, 2007 - 5:26 pm

On Tue, 02 Oct 2007 16:41:47 +0800
Fengguang Wu <wfg@mail.ustc.edu.cn> wrote:


kjourald wrote the page's buffers back (ext3 in ordered-data mode).  The VM
didn't know about that, so we have a PageDirty page which has clean
buffers.

We rely upon the VFS writeback code to "discover" that this dirty page has
clean buffers: the VFS will attempt to write the dirty page and will end up
marking the page clean without performing any IO.

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Messages in current thread:
[PATCH 4/5] writeback: remove pages_skipped accounting in __..., Fengguang Wu, (Tue Oct 2, 4:41 am)
Re: [PATCH 4/5] writeback: remove pages_skipped accounting i..., Andrew Morton, (Thu Oct 4, 5:26 pm)