The patch titled
hugetlb: introduce alloc_nodemask_of_node()
has been added to the -mm tree. Its filename is
hugetlb-introduce-alloc_nodemask_of_node.patch
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See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: hugetlb: introduce alloc_nodemask_of_node()
From: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Introduce nodemask macro to allocate a nodemask and initialize it to
contain a single node, using the macro init_nodemask_of_node() factored
out of the nodemask_of_node() macro.
alloc_nodemask_of_node() coded as a macro to avoid header dependency hell.
This will be used to construct the huge pages "nodes_allowed" nodemask for
a single node when basing nodes_allowed on a preferred/local mempolicy or
when a persistent huge page pool page count is modified via a per node
sysfs attribute.
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Cc: Nishanth Aravamudan <nacc@xxxxxxxxxx>
Cc: Adam Litke <agl@xxxxxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/nodemask.h | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff -puN include/linux/nodemask.h~hugetlb-introduce-alloc_nodemask_of_node include/linux/nodemask.h
--- a/include/linux/nodemask.h~hugetlb-introduce-alloc_nodemask_of_node
+++ a/include/linux/nodemask.h
@@ -245,18 +245,36 @@ static inline int __next_node(int n, con
return min_t(int,MAX_NUMNODES,find_next_bit(srcp->bits, MAX_NUMNODES, n+1));
}
+static inline void init_nodemask_of_node(nodemask_t *mask, int node)
+{
+ nodes_clear(*(mask));
+ node_set((node), *(mask));
+}
+
#define nodemask_of_node(node) \
({ \
typeof(_unused_nodemask_arg_) m; \
if (sizeof(m) == sizeof(unsigned long)) { \
m.bits[0] = 1UL<<(node); \
} else { \
- nodes_clear(m); \
- node_set((node), m); \
+ init_nodemask_of_node(&m, (node)); \
} \
m; \
})
+/*
+ * returns pointer to kmalloc()'d nodemask initialized to contain the
+ * specified node. Caller must free with kfree().
+ */
+#define alloc_nodemask_of_node(node) \
+({ \
+ typeof(_unused_nodemask_arg_) *nmp; \
+ nmp = kmalloc(sizeof(*nmp), GFP_KERNEL); \
+ if (nmp) \
+ init_nodemask_of_node(nmp, (node)); \
+ nmp; \
+})
+
#define first_unset_node(mask) __first_unset_node(&(mask))
static inline int __first_unset_node(const nodemask_t *maskp)
{
_
Patches currently in -mm which might be from lee.schermerhorn@xxxxxx are
hugetlb-restore-interleaving-of-bootmem-huge-pages-2631.patch
revert-hugetlb-restore-interleaving-of-bootmem-huge-pages-2631.patch
hugetlb-balance-freeing-of-huge-pages-across-nodes.patch
hugetlb-use-free_pool_huge_page-to-return-unused-surplus-pages.patch
hugetlb-use-free_pool_huge_page-to-return-unused-surplus-pages-fix.patch
hugetlb-clean-up-and-update-huge-pages-documentation.patch
hugetlb-restore-interleaving-of-bootmem-huge-pages.patch
ksm-add-mmu_notifier-set_pte_at_notify.patch
ksm-first-tidy-up-madvise_vma.patch
ksm-define-madv_mergeable-and-madv_unmergeable.patch
ksm-the-mm-interface-to-ksm.patch
ksm-no-debug-in-page_dup_rmap.patch
ksm-identify-pageksm-pages.patch
ksm-kernel-samepage-merging.patch
ksm-prevent-mremap-move-poisoning.patch
ksm-change-copyright-message.patch
ksm-change-ksm-nice-level-to-be-5.patch
hugetlbfs-allow-the-creation-of-files-suitable-for-map_private-on-the-vfs-internal-mount.patch
hugetlb-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions.patch
hugetlb-add-map_hugetlb-example.patch
hugetlb-rework-hstate_next_node_-functions.patch
hugetlb-add-nodemask-arg-to-huge-page-alloc-free-and-surplus-adjust-fcns.patch
hugetlb-introduce-alloc_nodemask_of_node.patch
hugetlb-derive-huge-pages-nodes-allowed-from-task-mempolicy.patch
hugetlb-derive-huge-pages-nodes-allowed-from-task-mempolicy-fix.patch
hugetlb-promote-numa_no_node-to-generic-constant.patch
hugetlb-add-per-node-hstate-attributes.patch
hugetlb-add-per-node-hstate-attributes-fix.patch
hugetlb-update-hugetlb-documentation-for-mempolicy-based-management.patch
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