The patch titled Subject: kernel/sched/fair: include missed header file, memory-tiers.h has been added to the -mm mm-unstable branch. Its filename is mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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 via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: SeongJae Park <sj@xxxxxxxxxx> Subject: kernel/sched/fair: include missed header file, memory-tiers.h Date: Sat, 20 Aug 2022 19:07:20 +0000 Commit f66f3c261487 ("mm/demotion: update node_is_toptier to work with memory tiers") of the 'mm-unstable' tree moved the declaration of 'node_is_toptier()' from 'node.h' to 'memory-tiers.h' but didn't include the header in a source file using the function, 'kernel/sched/fair.c'. As a result, build fails as below: linux/kernel/sched/fair.c: In function `should_numa_migrate_memory': linux/kernel/sched/fair.c:1571:7: error: implicit declaration of function `node_is_toptier' [-Werror=implicit-function-declaration] 1571 | !node_is_toptier(src_nid)) { | ^~~~~~~~~~~~~~~ cc1: some warnings being treated as errors This commit fixes the error by including the missed header file. Link: https://lkml.kernel.org/r/20220820190720.248704-1-sj@xxxxxxxxxx Fixes: f66f3c261487 ("mm/demotion: update node_is_toptier to work with memory tiers") on mm-unstable Signed-off-by: SeongJae Park <sj@xxxxxxxxxx> Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/sched/fair.c | 1 + 1 file changed, 1 insertion(+) --- a/kernel/sched/fair.c~mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix +++ a/kernel/sched/fair.c @@ -40,6 +40,7 @@ #include <linux/cpuidle.h> #include <linux/interrupt.h> +#include <linux/memory-tiers.h> #include <linux/mempolicy.h> #include <linux/mutex_api.h> #include <linux/profile.h> _ Patches currently in -mm which might be from sj@xxxxxxxxxx are mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix.patch