svn commit: r331018 - head/sys/vm

[Kyle Evans]

On Thu, Mar 15, 2018 at 2:23 PM, Jeff Roberson <jeff at freebsd.org> wrote:
> Author: jeff
> Date: Thu Mar 15 19:23:07 2018
> New Revision: 331018
> URL: https://svnweb.freebsd.org/changeset/base/331018
>
> Log:
>   Eliminate pageout wakeup races.  Take another step towards lockless
>   vmd_free_count manipulation.  Reduce the scope of the free lock by
>   using a pageout lock to synchronize sleep and wakeup.  Only trigger
>   the pageout daemon on transitions between states.  Drive all wakeup
>   operations directly as side-effects from freeing memory rather than
>   requiring an additional function call.
>
>   Reviewed by:  markj, kib
>   Tested by:    pho
>   Sponsored by: Netflix, Dell/EMC Isilon
>   Differential Revision:        https://reviews.freebsd.org/D14612
>

Hey,

Just a heads up: this broke the GCC builds [1] with the following (excerpt):

20:00:47 /usr/src/sys/vm/vm_pagequeue.h:249: warning: redundant
redeclaration of 'pagedaemon_wakeup' [-Wredundant-decls]
20:00:47 /usr/src/sys/vm/vm_pageout.h:98: warning: previous
declaration of 'pagedaemon_wakeup' was here

Thanks,

Kyle Evans

[1] https://ci.freebsd.org/job/FreeBSD-head-mips64-build/1108/console