svn commit: r216333 - head/sys/i386/i386

Joel Dahl joel at
Sat Dec 18 07:27:56 UTC 2010

On 09-12-2010 20:16, Alan Cox wrote:
> Author: alc
> Date: Thu Dec  9 20:16:00 2010
> New Revision: 216333
> URL:
> Log:
>   When r207410 eliminated the acquisition and release of the page queues
>   lock from pmap_extract_and_hold(), it didn't take into account that
>   pmap_pte_quick() sometimes requires the page queues lock to be held.
>   This change reimplements pmap_extract_and_hold() such that it no
>   longer uses pmap_pte_quick(), and thus never requires the page queues
>   lock.
>   For consistency, adopt the same idiom as used by the new
>   implementation of pmap_extract_and_hold() in pmap_extract() and
>   pmap_mincore().  It also happens to make these functions shorter.

Hi Alan,

This commit makes my laptop hang everytime I quit X.  I just get a black
screen and the machine won't respond to any keys.  Everything works if I
go back to r216330.


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