The patch titled
Subject: mm/mempolicy.c:offset_il_node() document and clarify
has been removed from the -mm tree. Its filename was
mm-mempolicyc-offset_il_node-document-and-clarify.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm/mempolicy.c:offset_il_node() document and clarify
This code was pretty obscure and was relying upon obscure side-effects of
next_node(-1, ...) and was relying upon NUMA_NO_NODE being equal to -1.
Clean that all up and document the function's intent.
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Cc: Joonsoo Kim <js1304@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempolicy.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff -puN mm/mempolicy.c~mm-mempolicyc-offset_il_node-document-and-clarify mm/mempolicy.c
--- a/mm/mempolicy.c~mm-mempolicyc-offset_il_node-document-and-clarify
+++ a/mm/mempolicy.c
@@ -1758,23 +1758,25 @@ unsigned int mempolicy_slab_node(void)
}
}
-/* Do static interleaving for a VMA with known offset. */
+/*
+ * Do static interleaving for a VMA with known offset @n. Returns the n'th
+ * node in pol->v.nodes (starting from n=0), wrapping around if n exceeds the
+ * number of present nodes.
+ */
static unsigned offset_il_node(struct mempolicy *pol,
- struct vm_area_struct *vma, unsigned long off)
+ struct vm_area_struct *vma, unsigned long n)
{
unsigned nnodes = nodes_weight(pol->v.nodes);
unsigned target;
- int c;
- int nid = NUMA_NO_NODE;
+ int i;
+ int nid;
if (!nnodes)
return numa_node_id();
- target = (unsigned int)off % nnodes;
- c = 0;
- do {
+ target = (unsigned int)n % nnodes;
+ nid = first_node(pol->v.nodes);
+ for (i = 0; i < target; i++)
nid = next_node(nid, pol->v.nodes);
- c++;
- } while (c <= target);
return nid;
}
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
i-need-old-gcc.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
mm.patch
mm-compaction-abstract-compaction-feedback-to-helpers-fix.patch
mm-oom-compaction-prevent-from-should_compact_retry-looping-for-ever-for-costly-orders-fix.patch
mm-oom-protect-costly-allocations-some-more-for-config_compaction-checkpatch-fixes.patch
vmstat-get-rid-of-the-ugly-cpu_stat_off-variable-v2-fix.patch
mm-compact-fix-zoneindex-in-compact-fix.patch
mm-thp-avoid-unnecessary-swapin-in-khugepaged-fix.patch
procfs-fixes-pthread-cross-thread-naming-if-pr_dumpable-fix.patch
exit_thread-remove-empty-bodies-fix.patch
exit_thread-accept-a-task-parameter-to-be-exited-checkpatch-fixes.patch
lib-gcd-use-binary-gcd-algorithm-instead-of-euclidean-fix.patch
allocate-idle-task-for-a-cpu-always-on-its-local-node-fix.patch
linux-next-git-rejects.patch
linux-next-rejects.patch
drivers-net-wireless-intel-iwlwifi-dvm-calibc-fix-min-warning.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
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