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authorBaolin Wang <baolin.wang@linux.alibaba.com>2021-09-02 15:00:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-03 09:58:17 -0700
commit062db29358c9bd40d8aa9e96ce7b492b03d669d5 (patch)
tree19fa5f58be1dbd38a5578994f918834895f3843f /mm
parent65d759c8f9f57b96c199f3fe5cfb93ac7da095e9 (diff)
mm/mempolicy: use readable NUMA_NO_NODE macro instead of magic number
The caller of mpol_misplaced() already use NUMA_NO_NODE to check whether current page node is misplaced, thus using NUMA_NO_NODE in mpol_misplaced() instead of magic number is more readable. Link: https://lkml.kernel.org/r/1b77c0ce21183fa86f4db250b115cf5e27396528.1627558356.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mempolicy.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index e675bfb856da..c473d2931708 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2425,8 +2425,8 @@ static void sp_free(struct sp_node *n)
* node id. Policy determination "mimics" alloc_page_vma().
* Called from fault path where we know the vma and faulting address.
*
- * Return: -1 if the page is in a node that is valid for this policy, or a
- * suitable node ID to allocate a replacement page from.
+ * Return: NUMA_NO_NODE if the page is in a node that is valid for this
+ * policy, or a suitable node ID to allocate a replacement page from.
*/
int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long addr)
{
@@ -2437,7 +2437,7 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long
int thiscpu = raw_smp_processor_id();
int thisnid = cpu_to_node(thiscpu);
int polnid = NUMA_NO_NODE;
- int ret = -1;
+ int ret = NUMA_NO_NODE;
pol = get_vma_policy(vma, addr);
if (!(pol->flags & MPOL_F_MOF))