linux-kernel - [PATCH v4 1/2] cpuset: rename cpuset_node_allowed to cpuset_current_node

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Message-ID: <20250422012616.1883287-2-gourry@gourry.net>
Date: Mon, 21 Apr 2025 21:26:14 -0400
From: Gregory Price <gourry@...rry.net>
To: linux-mm@...ck.org
Cc: cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	kernel-team@...a.com,
	longman@...hat.com,
	hannes@...xchg.org,
	mhocko@...nel.org,
	roman.gushchin@...ux.dev,
	shakeel.butt@...ux.dev,
	muchun.song@...ux.dev,
	tj@...nel.org,
	mkoutny@...e.com,
	akpm@...ux-foundation.org
Subject: [PATCH v4 1/2] cpuset: rename cpuset_node_allowed to cpuset_current_node_allowed

Rename cpuset_node_allowed to reflect that the function checks the
current task's cpuset.mems.  This allows us to make a new
cpuset_node_allowed function that checks a target cgroup's cpuset.mems.

Acked-by: Waiman Long <longman@...hat.com>
Acked-by: Tejun Heo <tj@...nel.org>
Reviewed-by: Shakeel Butt <shakeel.butt@...ux.dev>
Signed-off-by: Gregory Price <gourry@...rry.net>
---
 include/linux/cpuset.h | 4 ++--
 kernel/cgroup/cpuset.c | 4 ++--
 mm/page_alloc.c        | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 835e7b793f6a..893a4c340d48 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -82,11 +82,11 @@ extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
 void cpuset_init_current_mems_allowed(void);
 int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask);
 
-extern bool cpuset_node_allowed(int node, gfp_t gfp_mask);
+extern bool cpuset_current_node_allowed(int node, gfp_t gfp_mask);
 
 static inline bool __cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
 {
-	return cpuset_node_allowed(zone_to_nid(z), gfp_mask);
+	return cpuset_current_node_allowed(zone_to_nid(z), gfp_mask);
 }
 
 static inline bool cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 0f910c828973..f8e6a9b642cb 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -4090,7 +4090,7 @@ static struct cpuset *nearest_hardwall_ancestor(struct cpuset *cs)
 }
 
 /*
- * cpuset_node_allowed - Can we allocate on a memory node?
+ * cpuset_current_node_allowed - Can current task allocate on a memory node?
  * @node: is this an allowed node?
  * @gfp_mask: memory allocation flags
  *
@@ -4129,7 +4129,7 @@ static struct cpuset *nearest_hardwall_ancestor(struct cpuset *cs)
  *	GFP_KERNEL   - any node in enclosing hardwalled cpuset ok
  *	GFP_USER     - only nodes in current tasks mems allowed ok.
  */
-bool cpuset_node_allowed(int node, gfp_t gfp_mask)
+bool cpuset_current_node_allowed(int node, gfp_t gfp_mask)
 {
 	struct cpuset *cs;		/* current cpuset ancestors */
 	bool allowed;			/* is allocation in zone z allowed? */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5079b1b04d49..233ce25f8f3d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3461,7 +3461,7 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int order, int alloc_flags,
 retry:
 	/*
 	 * Scan zonelist, looking for a zone with enough free.
-	 * See also cpuset_node_allowed() comment in kernel/cgroup/cpuset.c.
+	 * See also cpuset_current_node_allowed() comment in kernel/cgroup/cpuset.c.
 	 */
 	no_fallback = alloc_flags & ALLOC_NOFRAGMENT;
 	z = ac->preferred_zoneref;
@@ -4148,7 +4148,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask, unsigned int order)
 		/*
 		 * Ignore cpuset mems for non-blocking __GFP_HIGH (probably
 		 * GFP_ATOMIC) rather than fail, see the comment for
-		 * cpuset_node_allowed().
+		 * cpuset_current_node_allowed().
 		 */
 		if (alloc_flags & ALLOC_MIN_RESERVE)
 			alloc_flags &= ~ALLOC_CPUSET;
-- 
2.49.0