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mm/mempolicy: use readable NUMA_NO_NODE macro instead of magic number

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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>
This commit is contained in:
Baolin Wang 2021-09-02 15:00:03 -07:00 committed by Linus Torvalds
parent 65d759c8f9
commit 062db29358
1 changed files with 3 additions and 3 deletions
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6
mm/mempolicy.c
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@ -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))