Subject: Re: i/o scheduling (was Re: NEW_BUFQ_STRATEGY)
To: YAMAMOTO Takashi <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 12/17/2003 17:53:11
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On Dec 17, 2003, at 2:50 PM, YAMAMOTO Takashi wrote:
> did you read my replies to tls@ and bouyer@? weren't them enough?
> or am i missing the point?
I did read them, but after I replied. Sorry :(
> my understanding is,
> - page is PG_BUSY during write back. if we keep a delayed write
> request at buffer queue forever, the page will be left PG_BUSY
> - getpages will wait on the PG_BUSY page.
Yah. It would be nice for outgoing PG_BUSY pages to not block, because
their contents *are* valid...
This is something that should probably be fixed.
-- Jason R. Thorpe <firstname.lastname@example.org>
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