The patch titled
Subject: hugetlbfs: add an inline helper for finding hstate index
has been added to the -mm tree. Its filename is
hugetlbfs-add-an-inline-helper-for-finding-hstate-index.patch
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------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Subject: hugetlbfs: add an inline helper for finding hstate index
Add an inline helper and use it in the code.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Hillf Danton <dhillf@xxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/hugetlb.h | 6 ++++++
mm/hugetlb.c | 18 ++++++++++--------
2 files changed, 16 insertions(+), 8 deletions(-)
diff -puN include/linux/hugetlb.h~hugetlbfs-add-an-inline-helper-for-finding-hstate-index include/linux/hugetlb.h
--- a/include/linux/hugetlb.h~hugetlbfs-add-an-inline-helper-for-finding-hstate-index
+++ a/include/linux/hugetlb.h
@@ -302,6 +302,11 @@ static inline unsigned hstate_index_to_s
return hstates[index].order + PAGE_SHIFT;
}
+static inline int hstate_index(struct hstate *h)
+{
+ return h - hstates;
+}
+
#else
struct hstate {};
#define alloc_huge_page_node(h, nid) NULL
@@ -320,6 +325,7 @@ static inline unsigned int pages_per_hug
return 1;
}
#define hstate_index_to_shift(index) 0
+#define hstate_index(h) 0
#endif
#endif /* _LINUX_HUGETLB_H */
diff -puN mm/hugetlb.c~hugetlbfs-add-an-inline-helper-for-finding-hstate-index mm/hugetlb.c
--- a/mm/hugetlb.c~hugetlbfs-add-an-inline-helper-for-finding-hstate-index
+++ a/mm/hugetlb.c
@@ -1646,7 +1646,7 @@ static int hugetlb_sysfs_add_hstate(stru
struct attribute_group *hstate_attr_group)
{
int retval;
- int hi = h - hstates;
+ int hi = hstate_index(h);
hstate_kobjs[hi] = kobject_create_and_add(h->name, parent);
if (!hstate_kobjs[hi])
@@ -1741,11 +1741,13 @@ void hugetlb_unregister_node(struct node
if (!nhs->hugepages_kobj)
return; /* no hstate attributes */
- for_each_hstate(h)
- if (nhs->hstate_kobjs[h - hstates]) {
- kobject_put(nhs->hstate_kobjs[h - hstates]);
- nhs->hstate_kobjs[h - hstates] = NULL;
+ for_each_hstate(h) {
+ int idx = hstate_index(h);
+ if (nhs->hstate_kobjs[idx]) {
+ kobject_put(nhs->hstate_kobjs[idx]);
+ nhs->hstate_kobjs[idx] = NULL;
}
+ }
kobject_put(nhs->hugepages_kobj);
nhs->hugepages_kobj = NULL;
@@ -1848,7 +1850,7 @@ static void __exit hugetlb_exit(void)
hugetlb_unregister_all_nodes();
for_each_hstate(h) {
- kobject_put(hstate_kobjs[h - hstates]);
+ kobject_put(hstate_kobjs[hstate_index(h)]);
}
kobject_put(hugepages_kobj);
@@ -2679,7 +2681,7 @@ retry:
*/
if (unlikely(PageHWPoison(page))) {
ret = VM_FAULT_HWPOISON |
- VM_FAULT_SET_HINDEX(h - hstates);
+ VM_FAULT_SET_HINDEX(hstate_index(h));
goto backout_unlocked;
}
}
@@ -2752,7 +2754,7 @@ int hugetlb_fault(struct mm_struct *mm,
return 0;
} else if (unlikely(is_hugetlb_entry_hwpoisoned(entry)))
return VM_FAULT_HWPOISON_LARGE |
- VM_FAULT_SET_HINDEX(h - hstates);
+ VM_FAULT_SET_HINDEX(hstate_index(h));
}
ptep = huge_pte_alloc(mm, address, huge_page_size(h));
_
Subject: Subject: hugetlbfs: add an inline helper for finding hstate index
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxxxxxxx are
linux-next.patch
hugetlbfs-lockdep-annotate-root-inode-properly.patch
hugetlb-rename-max_hstate-to-hugetlb_max_hstate.patch
hugetlbfs-dont-use-err_ptr-with-vm_fault-values.patch
hugetlbfs-add-an-inline-helper-for-finding-hstate-index.patch
hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages.patch
hugetlb-avoid-taking-i_mmap_mutex-in-unmap_single_vma-for-hugetlb.patch
hugetlb-simplify-migrate_huge_page.patch
memcg-add-hugetlb-extension.patch
hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free.patch
memcg-track-resource-index-in-cftype-private.patch
hugetlbfs-add-memcg-control-files-for-hugetlbfs.patch
hugetlbfs-add-a-list-for-tracking-in-use-hugetlb-pages.patch
memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal.patch
hugetlb-migrate-memcg-info-from-oldpage-to-new-page-during-migration.patch
memcg-add-memory-controller-documentation-for-hugetlb-management.patch
--
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