fs/udf: vm pages "overlap" while reading large dir [patch]

Andriy Gapon avg at icyb.net.ua
Thu Feb 28 08:33:26 UTC 2008


on 26/02/2008 21:23 Pav Lucistnik said the following:
> Pav Lucistnik píše v út 05. 02. 2008 v 19:16 +0100:
>> Andriy Gapon píše v út 05. 02. 2008 v 16:40 +0200:
>>
>>>> Yay, and can you fix the sequential read performance while you're at it?
>>>> Kthx!
>>> this was almost trivial :-)
>>> See the attached patch, first hunk is just for consistency.
>>> The code was borrowed from cd9660, only field/variable names are adjusted.
> 
> Just tested it with my shiny new Bluray drive, and it work wonders.
> Finally seamless playback of media files off UDF carrying media.
> 
> So, how does it look WRT committing it?
> 

Pav,

thank you for the feedback/reminder.
In my personal option the latest patch posted and described at the
following like is a very good candidate for commit:
http://docs.FreeBSD.org/cgi/mid.cgi?47AA43B9.1040608
It might have a couple of style related issues, but it should improve
things a bit even if some larger VM/VFS/GEOM issues remain.

And by the way, a patch from the following PR would be a good
"side-dish" for the above patch:
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/78987
I think it is simple and obvious enough.

-- 
Andriy Gapon


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