On Mon, 26 Mar 2007, Pharaoh . wrote: > On 3/25/07, Robert P. J. Day <rpjday@xxxxxxxxxxxxxx> wrote: > > > > from everything i'd ever read, i was under the impression that a > > memory allocation might be GFP_KERNEL or GFP_ATOMIC, but not both. > > however, there are at least a couple calls in the kernel where both of > > those flags are used simultaneously. does that make sense? > > > > rday > Yes. could you expand on that just a little? given that my copy of LDD3 says things like, "GFP_KERNEL isn't always the right allocation flag to use ... use a flag of GFP_ATOMIC instead" and "usually either GFP_KERNEL or GFP_ATOMIC is used" and that the definition of those two flags on p. 214 of that same book states: GFP_ATOMIC: ... Never sleeps. GFP_KERNEL: ... May sleep. everything implies *strongly* that those two flags are mutually exclusive, so saying "Yes." as your entire response to my question is somewhat less than enlightening. rday -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry Waterloo, Ontario, CANADA http://fsdev.net/wiki/index.php?title=Main_Page ======================================================================== -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
