The patch titled Subject: mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update has been added to the -mm tree. Its filename is mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx> Subject: mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update Signed-off-by: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/page_alloc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff -puN mm/page_alloc.c~mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update mm/page_alloc.c --- a/mm/page_alloc.c~mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update +++ a/mm/page_alloc.c @@ -1174,7 +1174,13 @@ void drain_local_pages(void *arg) } /* - * Spill all the per-cpu pages from all CPUs back into the buddy allocator + * Spill all the per-cpu pages from all CPUs back into the buddy allocator. + * + * Note that this code is protected against sending an IPI to an offline + * CPU but does not guarantee sending an IPI to newly hotplugged CPUs: + * on_each_cpu_mask() blocks hotplug and won't talk to offlined CPUs but + * nothing keeps CPUs from showing up after we populated the cpumask and + * before the call to on_each_cpu_mask(). */ void drain_all_pages(void) { _ Subject: Subject: mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update Patches currently in -mm which might be from gilad@xxxxxxxxxxxxx are smp-introduce-a-generic-on_each_cpu_mask-function.patch arm-move-arm-over-to-generic-on_each_cpu_mask.patch tile-move-tile-to-use-generic-on_each_cpu_mask.patch smp-add-func-to-ipi-cpus-based-on-parameter-func.patch smp-add-func-to-ipi-cpus-based-on-parameter-func-fix.patch smp-add-func-to-ipi-cpus-based-on-parameter-func-update.patch slub-only-ipi-cpus-that-have-per-cpu-obj-to-flush.patch fs-only-send-ipi-to-invalidate-lru-bh-when-needed.patch mm-only-ipi-cpus-to-drain-local-pages-if-they-exist.patch mm-only-ipi-cpus-to-drain-local-pages-if-they-exist-update.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html