linux-kernel - [PATCH v2 2/5] mm/vmalloc.c: Introduce a wrapper function of insert_vmap_area

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Date:   Tue,  2 Jul 2019 22:15:38 +0800
From:   Pengfei Li <lpf.vector@...il.com>
To:     akpm@...ux-foundation.org, peterz@...radead.org, urezki@...il.com
Cc:     rpenyaev@...e.de, mhocko@...e.com, guro@...com,
        aryabinin@...tuozzo.com, rppt@...ux.ibm.com, mingo@...nel.org,
        rick.p.edgecombe@...el.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Pengfei Li <lpf.vector@...il.com>
Subject: [PATCH v2 2/5] mm/vmalloc.c: Introduce a wrapper function of insert_vmap_area_augment()

The red-black tree whose root is free_vmap_area_root is called the
*FREE* tree. Like the previous commit, add wrapper functions
insert_va_to_free_tree and rename insert_vmap_area_augment to
__insert_vmap_area_augment.

Signed-off-by: Pengfei Li <lpf.vector@...il.com>
---
 mm/vmalloc.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 0a46be76c63b..a5065fcb74d3 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -658,7 +658,7 @@ insert_va_to_busy_tree(struct vmap_area *va)
 }
 
 static void
-insert_vmap_area_augment(struct vmap_area *va,
+__insert_vmap_area_augment(struct vmap_area *va,
 	struct rb_node *from, struct rb_root *root,
 	struct list_head *head)
 {
@@ -674,6 +674,13 @@ insert_vmap_area_augment(struct vmap_area *va,
 	augment_tree_propagate_from(va);
 }
 
+static __always_inline void
+insert_va_to_free_tree(struct vmap_area *va, struct rb_node *from)
+{
+	__insert_vmap_area_augment(va, from, &free_vmap_area_root,
+				&free_vmap_area_list);
+}
+
 /*
  * Merge de-allocated chunk of VA memory with previous
  * and next free blocks. If coalesce is not done a new
@@ -979,8 +986,7 @@ adjust_va_to_fit_type(struct vmap_area *va,
 		augment_tree_propagate_from(va);
 
 		if (lva)	/* type == NE_FIT_TYPE */
-			insert_vmap_area_augment(lva, &va->rb_node,
-				&free_vmap_area_root, &free_vmap_area_list);
+			insert_va_to_free_tree(lva, &va->rb_node);
 	}
 
 	return 0;
@@ -1822,9 +1828,7 @@ static void vmap_init_free_space(void)
 				free->va_start = vmap_start;
 				free->va_end = busy->va_start;
 
-				insert_vmap_area_augment(free, NULL,
-					&free_vmap_area_root,
-						&free_vmap_area_list);
+				insert_va_to_free_tree(free, NULL);
 			}
 		}
 
@@ -1837,9 +1841,7 @@ static void vmap_init_free_space(void)
 			free->va_start = vmap_start;
 			free->va_end = vmap_end;
 
-			insert_vmap_area_augment(free, NULL,
-				&free_vmap_area_root,
-					&free_vmap_area_list);
+			insert_va_to_free_tree(free, NULL);
 		}
 	}
 }
-- 
2.21.0