docs/114139: mbuf(9) has misleading comments on M_DONTWAIT and M_TRYWAIT
jamie at gritton.org
Fri Jun 29 21:00:12 UTC 2007
>Synopsis: mbuf(9) has misleading comments on M_DONTWAIT and M_TRYWAIT
>Arrival-Date: Fri Jun 29 21:00:11 GMT 2007
>Originator: James Gritton
>Release: Current (7)
FreeBSD celeborn.e.gritton.org 7.0-CURRENT FreeBSD 7.0-CURRENT #2: Fri Mar 16 23:11:05 MDT 2007 gritton at celeborn.e.gritton.org:/usr/src/sys/i386/compile/CELEBORN i386
The MGET section of mbuf(9) asserts that M_DONTWAIT shouldn't be confused with M_NOWAIT ("they are not the same"). In sys/mbuf.h, they are in fact the same, as M_DONTWAIT is merely defined as M_NOWAIT.
Also, M_TRYWAIT is said to wait for kern.ipc.mbuf_wait ticks, a tunable which apparently no longer exists (and really M_TRYWAIT is just M_WAITOK).
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