The patch titled
Subject: cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2
has been added to the -mm tree. Its filename is
cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2.patch
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------------------------------------------------------
From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2
Here's a cleaner way of doing it, we can extend it to mm/slab.c later.
Please fold into
cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask.patch.
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Miao Xie <miaox@xxxxxxxxxxxxxx>
Cc: Paul Menage <paul@xxxxxxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mempolicy.h | 10 ++++++++++
kernel/cpuset.c | 5 +----
2 files changed, 11 insertions(+), 4 deletions(-)
diff -puN include/linux/mempolicy.h~cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2 include/linux/mempolicy.h
--- a/include/linux/mempolicy.h~cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2
+++ a/include/linux/mempolicy.h
@@ -253,6 +253,11 @@ static inline int vma_migratable(struct
return 1;
}
+static inline bool task_has_mempolicy(struct task_struct *task)
+{
+ return task->mempolicy;
+}
+
#else
struct mempolicy {};
@@ -379,6 +384,11 @@ static inline int mpol_to_str(char *buff
return 0;
}
+static inline bool task_has_mempolicy(struct task_struct *task)
+{
+ return false;
+}
+
#endif /* CONFIG_NUMA */
#endif /* __KERNEL__ */
diff -puN kernel/cpuset.c~cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2 kernel/cpuset.c
--- a/kernel/cpuset.c~cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2
+++ a/kernel/cpuset.c
@@ -968,10 +968,7 @@ repeat:
* tsk does not have a mempolicy, then an empty nodemask will not be
* possible when mems_allowed is larger than a word.
*/
- need_loop =
-#ifdef CONFIG_NUMA
- tsk->mempolicy ||
-#endif
+ need_loop = task_has_mempolicy(tsk) ||
!nodes_intersects(*newmems, tsk->mems_allowed);
nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems);
mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1);
_
Subject: Subject: cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
origin.patch
mm-ensure-that-pfn_valid-is-called-once-per-pageblock-when-reserving-pageblocks.patch
mm-vmalloc-check-for-page-allocation-failure-before-vmlist-insertion.patch
linux-next.patch
cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask.patch
cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix.patch
cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2.patch
cpusets-stall-when-updating-mems_allowed-for-mempolicy-or-disjoint-nodemask-fix-2-fix.patch
mm-vmallocc-eliminate-extra-loop-in-pcpu_get_vm_areas-error-path.patch
mm-avoid-livelock-on-__gfp_fs-allocations-v2.patch
kernelh-add-build_bug-macro.patch
kernelh-add-build_bug-macro-v3.patch
hugetlb-replace-bug-with-build_bug-for-dummy-definitions.patch
mm-debug-test-for-online-nid-when-allocating-on-single-node.patch
vmscan-add-task-name-to-warn_scan_unevictable-messages.patch
cpusets-cgroups-disallow-attaching-kthreadd.patch
memcg-make-mem_cgroup_split_huge_fixup-more-efficient.patch
mm-oom_kill-remove-memcg-argument-from-oom_kill_task.patch
mm-unify-remaining-mem_cont-mem-etc-variable-names-to-memcg.patch
mm-memcg-clean-up-fault-accounting.patch
mm-memcg-lookup_page_cgroup-almost-never-returns-null.patch
mm-page_cgroup-check-page_cgroup-arrays-in-lookup_page_cgroup-only-when-necessary.patch
mm-memcg-remove-unneeded-checks-from-newpage_charge.patch
mm-memcg-remove-unneeded-checks-from-uncharge_page.patch
thp-improve-the-error-code-path.patch
thp-remove-unnecessary-tlb-flush-for-mprotect.patch
thp-add-tlb_remove_pmd_tlb_entry.patch
thp-improve-order-in-lru-list-for-split-huge-page.patch
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