The patch titled Subject: mm, pcpu: make zone pcp updates and reset internal to the mm has been added to the -mm tree. Its filename is mm-pcpu-make-zone-pcp-updates-and-reset-internal-to-the-mm.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-pcpu-make-zone-pcp-updates-and-reset-internal-to-the-mm.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-pcpu-make-zone-pcp-updates-and-reset-internal-to-the-mm.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/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Subject: mm, pcpu: make zone pcp updates and reset internal to the mm Memory hotplug needs to be able to reset and reinit the pcpu allocator batch and high limits but this action is internal to the VM. Move the declaration to internal.h Link: http://lkml.kernel.org/r/20191021094808.28824-4-mgorman@xxxxxxxxxxxxxxxxxxx Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> Cc: Qian Cai <cai@xxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/mm.h | 3 --- mm/internal.h | 3 +++ 2 files changed, 3 insertions(+), 3 deletions(-) --- a/include/linux/mm.h~mm-pcpu-make-zone-pcp-updates-and-reset-internal-to-the-mm +++ a/include/linux/mm.h @@ -2219,9 +2219,6 @@ void warn_alloc(gfp_t gfp_mask, nodemask extern void setup_per_cpu_pageset(void); -extern void zone_pcp_update(struct zone *zone); -extern void zone_pcp_reset(struct zone *zone); - /* page_alloc.c */ extern int min_free_kbytes; extern int watermark_boost_factor; --- a/mm/internal.h~mm-pcpu-make-zone-pcp-updates-and-reset-internal-to-the-mm +++ a/mm/internal.h @@ -165,6 +165,9 @@ extern void post_alloc_hook(struct page gfp_t gfp_flags); extern int user_min_free_kbytes; +extern void zone_pcp_update(struct zone *zone); +extern void zone_pcp_reset(struct zone *zone); + #if defined CONFIG_COMPACTION || defined CONFIG_CMA /* _ Patches currently in -mm which might be from mgorman@xxxxxxxxxxxxxxxxxxx are mm-meminit-recalculate-pcpu-batch-and-high-limits-after-init-completes.patch mm-pcp-share-common-code-between-memory-hotplug-and-percpu-sysctl-handler.patch mm-pcpu-make-zone-pcp-updates-and-reset-internal-to-the-mm.patch