mm/vmalloc.c: make use of the helper macro LIST_HEAD()

list_head can be initialized automatically with LIST_HEAD() instead of
calling INIT_LIST_HEAD().  Here we can simplify the code.

Link: https://lkml.kernel.org/r/20240828041216.1222582-1-lihongbo22@huawei.com
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 264a2627bea4e7222fe8d0c884ca194a8165a129..efba551d81aa54b1d81200d9f7958ca8a61d53dc 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2131,23 +2131,18 @@ reclaim_list_global(struct list_head *head)
 static void
 decay_va_pool_node(struct vmap_node *vn, bool full_decay)
 {
+       LIST_HEAD(decay_list);
+       struct rb_root decay_root = RB_ROOT;
        struct vmap_area *va, *nva;
-       struct list_head decay_list;
-       struct rb_root decay_root;
        unsigned long n_decay;
        int i;
 
-       decay_root = RB_ROOT;
-       INIT_LIST_HEAD(&decay_list);
-
        for (i = 0; i < MAX_VA_SIZE_PAGES; i++) {
-               struct list_head tmp_list;
+               LIST_HEAD(tmp_list);
 
                if (list_empty(&vn->pool[i].head))
                        continue;
 
-               INIT_LIST_HEAD(&tmp_list);
-
                /* Detach the pool, so no-one can access it. */
                spin_lock(&vn->pool_lock);
                list_replace_init(&vn->pool[i].head, &tmp_list);