On 11/12/2012 3:48 PM, Konstantin Belousov wrote:
On Mon, Nov 12, 2012 at 01:28:02PM -0800, Sushanth Rai wrote:
This patch still doesn't address the issue of M_NOWAIT calls driving
the memory the all the way down to 2 pages, right ? It would be nice to
have M_NOWAIT just do non-sleep version of M_WAITOK and M_USE_RESERVE
flag to dig deep.
This is out of scope of the change. But it is required for any further
adjustements.
I would suggest a somewhat different response:
The patch does make M_NOWAIT into a "non-sleep version of M_WAITOK" and
does reintroduce M_USE_RESERVE as a way to specify "dig deep".
Currently, both M_NOWAIT and M_WAITOK can drive the cache/free memory
down to two pages. The effect of the patch is to stop M_NOWAIT at two
pages rather than allowing it to continue to zero pages.
When you say, "This is out of scope ...", I believe that you are
referring to changing two pages into something larger. I agree that
this is out of scope for the current change.
Alan
_______________________________________________
freebsd-hackers@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
