This patch set is meant to be a v5 of my earlier submission with the same title[1]. The main changes from the previous version are that I have added a new patch to address an issue that had disabled deferred memory init on my system due to recent config changes related to CONFIG_NO_BOOTMEM. In addition I dropped the original patches 4 and 5 from the previous set as that is going to need to be a separate set of patches. The main thing this patch set achieves is that it allows us to initialize each node worth of persistent memory independently. As a result we reduce page init time by about 2 minutes because instead of taking 30 to 40 seconds per node and going through each node one at a time, we process all 4 nodes in parallel in the case of a 12TB persistent memory setup spread evenly over 4 nodes. [1]: https://lkml.org/lkml/2018/9/21/4 --- Alexander Duyck (4): mm: Remove now defunct NO_BOOTMEM from depends list for deferred init mm: Provide kernel parameter to allow disabling page init poisoning mm: Create non-atomic version of SetPageReserved for init use mm: Defer ZONE_DEVICE page initialization to the point where we init pgmap Documentation/admin-guide/kernel-parameters.txt | 12 +++ arch/csky/Kconfig | 1 include/linux/mm.h | 2 include/linux/page-flags.h | 9 ++ kernel/memremap.c | 24 ++--- mm/Kconfig | 1 mm/debug.c | 46 ++++++++++ mm/hmm.c | 12 ++- mm/memblock.c | 5 - mm/page_alloc.c | 101 ++++++++++++++++++++++- mm/sparse.c | 4 - 11 files changed, 184 insertions(+), 33 deletions(-) --
