svn commit: r287235 - in head/sys: sys vm

[hiren panchasara]

On 08/28/15 at 12:44P, Mark Johnston wrote:
> Author: markj
> Date: Fri Aug 28 00:44:17 2015
> New Revision: 287235
> URL: https://svnweb.freebsd.org/changeset/base/287235
> 
> Log:
>   Remove weighted page handling from vm_page_advise().
>   
>   This was added in r51337 as part of the implementation of
>   madvise(MADV_DONTNEED).  Its objective was to ensure that the page daemon
>   would eventually reclaim other unreferenced pages (i.e., unreferenced pages
>   not touched by madvise()) from the active queue.
>   
>   Now that the pagedaemon performs steady scanning of the active page queue,
>   this weighted handling is unnecessary.  Instead, always "cache" clean pages
>   by moving them to the head of the inactive page queue.  This simplifies the
>   implementation of vm_page_advise() and eliminates the fragmentation that
>   resulted from the distribution of pages among multiple queues.
>   
>   Suggested by:	alc
>   Reviewed by:	alc
>   Sponsored by:	EMC / Isilon Storage Division
>   Differential Revision:	https://reviews.freebsd.org/D3401

Nice work!

Can this be mfc'd to 10?

Cheers,
Hiren
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 618 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/svn-src-all/attachments/20150827/eb158e53/attachment.bin>