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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-21 10:07:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-21 10:07:42 -0700
commit84da111de0b4be15bd500deff773f5116f39f7be (patch)
tree76b5796f8258397bf7a3926b742a89166a8501ef /mm/mempolicy.c
parent227c3e9eb5cf3552c2cc83225df6d14adb05f8e8 (diff)
parent62974fc389b364d8af70e044836362222bd3ae53 (diff)
Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull hmm updates from Jason Gunthorpe: "This is more cleanup and consolidation of the hmm APIs and the very strongly related mmu_notifier interfaces. Many places across the tree using these interfaces are touched in the process. Beyond that a cleanup to the page walker API and a few memremap related changes round out the series: - General improvement of hmm_range_fault() and related APIs, more documentation, bug fixes from testing, API simplification & consolidation, and unused API removal - Simplify the hmm related kconfigs to HMM_MIRROR and DEVICE_PRIVATE, and make them internal kconfig selects - Hoist a lot of code related to mmu notifier attachment out of drivers by using a refcount get/put attachment idiom and remove the convoluted mmu_notifier_unregister_no_release() and related APIs. - General API improvement for the migrate_vma API and revision of its only user in nouveau - Annotate mmu_notifiers with lockdep and sleeping region debugging Two series unrelated to HMM or mmu_notifiers came along due to dependencies: - Allow pagemap's memremap_pages family of APIs to work without providing a struct device - Make walk_page_range() and related use a constant structure for function pointers" * tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (75 commits) libnvdimm: Enable unit test infrastructure compile checks mm, notifier: Catch sleeping/blocking for !blockable kernel.h: Add non_block_start/end() drm/radeon: guard against calling an unpaired radeon_mn_unregister() csky: add missing brackets in a macro for tlb.h pagewalk: use lockdep_assert_held for locking validation pagewalk: separate function pointers from iterator data mm: split out a new pagewalk.h header from mm.h mm/mmu_notifiers: annotate with might_sleep() mm/mmu_notifiers: prime lockdep mm/mmu_notifiers: add a lockdep map for invalidate_range_start/end mm/mmu_notifiers: remove the __mmu_notifier_invalidate_range_start/end exports mm/hmm: hmm_range_fault() infinite loop mm/hmm: hmm_range_fault() NULL pointer bug mm/hmm: fix hmm_range_fault()'s handling of swapped out pages mm/mmu_notifiers: remove unregister_no_release RDMA/odp: remove ib_ucontext from ib_umem RDMA/odp: use mmu_notifier_get/put for 'struct ib_ucontext_per_mm' RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr RDMA/mlx5: Use ib_umem_start instead of umem.address ...
Diffstat (limited to 'mm/mempolicy.c')
-rw-r--r--mm/mempolicy.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 65e0874fce17..f000771558d8 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -68,7 +68,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/mempolicy.h>
-#include <linux/mm.h>
+#include <linux/pagewalk.h>
#include <linux/highmem.h>
#include <linux/hugetlb.h>
#include <linux/kernel.h>
@@ -655,6 +655,12 @@ static int queue_pages_test_walk(unsigned long start, unsigned long end,
return 1;
}
+static const struct mm_walk_ops queue_pages_walk_ops = {
+ .hugetlb_entry = queue_pages_hugetlb,
+ .pmd_entry = queue_pages_pte_range,
+ .test_walk = queue_pages_test_walk,
+};
+
/*
* Walk through page tables and collect pages to be migrated.
*
@@ -679,15 +685,8 @@ queue_pages_range(struct mm_struct *mm, unsigned long start, unsigned long end,
.nmask = nodes,
.prev = NULL,
};
- struct mm_walk queue_pages_walk = {
- .hugetlb_entry = queue_pages_hugetlb,
- .pmd_entry = queue_pages_pte_range,
- .test_walk = queue_pages_test_walk,
- .mm = mm,
- .private = &qp,
- };
- return walk_page_range(start, end, &queue_pages_walk);
+ return walk_page_range(mm, start, end, &queue_pages_walk_ops, &qp);
}
/*