On Thu, 2008-08-07 at 15:35 +0200, Michael Kerrisk wrote: > Lee, > > Lee Schermerhorn wrote: > > Attempt to claify discussion of MPOL_DEFAULT. > > > > Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx> > > These look like good changes. > > One question: is this just improving the description, or has some behavior > changed in a recent kernel version, and the text is being adjusted for that > change? I'd like to think it improves the description :). Already discussed the change in implementation != change in behavior in response to the same question on [one of the] patch #4. I see that here I used "explicit \"local allocation\"" again, but with the quotes in what I think are the right places. > > Cheers, > > Michael > > > > > man2/mbind.2 | 18 +++++++++++++----- > > 1 files changed, 13 insertions(+), 5 deletions(-) > > > > Index: man-pages-3.05/man2/mbind.2 > > =================================================================== > > --- man-pages-3.05.orig/man2/mbind.2 2008-07-29 16:53:48.000000000 -0400 > > +++ man-pages-3.05/man2/mbind.2 2008-07-29 16:54:13.000000000 -0400 > > @@ -184,7 +184,8 @@ the memory policy reverts to > > > > The > > .B MPOL_DEFAULT > > -mode specifies that the default policy should be used. > > +mode requests that any non-default policy be removed, > > +restoring default behavior. > > When applied to a range of memory via > > .BR mbind (), > > this means to use the process policy, > > @@ -193,7 +194,7 @@ which may have been set with > > If the mode of the process policy is also > > .BR MPOL_DEFAULT , > > the system-wide default policy will be used. > > -The system-wide default policy will allocate > > +The system-wide default policy allocates > > pages on the node of the CPU that triggers the allocation. > > For > > .BR MPOL_DEFAULT , > > @@ -399,20 +400,27 @@ is ignored on huge page mappings. > > > > The > > .BR MPOL_DEFAULT , > > -mode has different effects for > > +mode can have different effects for > > .BR mbind () > > and > > .BR set_mempolicy (2). > > When > > .B MPOL_DEFAULT > > +is specified for > > +.BR set_mempolicy (2), > > +the process' policy reverts to system default policy > > +or local allocation. > > +When > > +.B MPOL_DEFAULT > > is specified for a range of memory using > > .BR mbind (), > > any pages subsequently allocated for that range will use > > the process's policy, as set by > > .BR set_mempolicy (2). > > This effectively removes the explicit policy from the > > -specified range. > > -To select "local allocation" for a memory range, > > +specified range, "falling back" to a possibly non-default > > +policy. > > +To select explicit "local allocation" for a memory range, > > specify a > > .I mode > > of > > > -- To unsubscribe from this list: send the line "unsubscribe linux-numa" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
