On 08/28/2015 08:42 PM, Eric B Munson wrote: > When mremap() is used to move or expand a mapping that is locked with > mlock() or equivalent it will attempt to populate the new area. > However, like mmap(MAP_LOCKED), mremap() will not fail if the area > cannot be populated. Also like mmap(MAP_LOCKED) this might come as a > surprise to users and should be noted. Thanks, Eric! Applied, with Michael's Acked-by added. Cheers, Michael > Signed-off-by: Eric B Munson <emunson@xxxxxxxxxx> > Cc: Michal Hocko <mhocko@xxxxxxx> > Cc: David Rientjes <rientjes@xxxxxxxxxx> > Cc: linux-man@xxxxxxxxxxxxxxx > Cc: linux-mm@xxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > --- > man2/mremap.2 | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/man2/mremap.2 b/man2/mremap.2 > index 071adb5..cf884e6 100644 > --- a/man2/mremap.2 > +++ b/man2/mremap.2 > @@ -196,6 +196,17 @@ and the prototype for > did not allow for the > .I new_address > argument. > + > +If > +.BR mremap () > +is used to move or expand an area locked with > +.BR mlock (2) > +or equivalent, the > +.BR mremap () > +call will make a best effort to populate the new area but will not fail > +with > +.B ENOMEM > +if the area cannot be populated. > .SH SEE ALSO > .BR brk (2), > .BR getpagesize (2), > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>