-----Original Message-----
From: Gleb Smirnoff <[email protected]>
Date: 2020-02-26, Wednesday at 13:55
To: Ravi Pokala <[email protected]>
Cc: <[email protected]>, <[email protected]>,
<[email protected]>
Subject: Re: svn commit: r358317 - head/sys/kern
On Tue, Feb 25, 2020 at 12:02:29PM -0800, Ravi Pokala wrote:
R> When sendfile_swapin() sweeps through pages in search for a bogus
page
R> skip first and last pages. This is a micro optimisation.
R>
R> Yes, but *why* skip the first and last pages?
We may have inserted bogus pages in the middle of a request. We never
substitute
first or last.
--
Gleb Smirnoff
Oh god, "bogus_page" -- Panasas had to jump through a bunch of hoops involving
bogus_page and our RAIDing-across-sectors GEOM class years ago. <shudder>
-Ravi (rpokala@)
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