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Message-Id: <20230829081142.3619-4-urezki@gmail.com>
Date: Tue, 29 Aug 2023 10:11:36 +0200
From: "Uladzislau Rezki (Sony)" <urezki@...il.com>
To: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Baoquan He <bhe@...hat.com>,
Lorenzo Stoakes <lstoakes@...il.com>,
Christoph Hellwig <hch@...radead.org>,
Matthew Wilcox <willy@...radead.org>,
"Liam R . Howlett" <Liam.Howlett@...cle.com>,
Dave Chinner <david@...morbit.com>,
"Paul E . McKenney" <paulmck@...nel.org>,
Joel Fernandes <joel@...lfernandes.org>,
Uladzislau Rezki <urezki@...il.com>,
Oleksiy Avramchenko <oleksiy.avramchenko@...y.com>,
Christoph Hellwig <hch@....de>
Subject: [PATCH v2 3/9] mm: vmalloc: Move vmap_init_free_space() down in vmalloc.c
A vmap_init_free_space() is a function that setups a vmap space
and is considered as part of initialization phase. Since a main
entry which is vmalloc_init(), has been moved down in vmalloc.c
it makes sense to follow the pattern.
There is no a functional change as a result of this patch.
Reviewed-by: Christoph Hellwig <hch@....de>
Reviewed-by: Lorenzo Stoakes <lstoakes@...il.com>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
---
mm/vmalloc.c | 82 ++++++++++++++++++++++++++--------------------------
1 file changed, 41 insertions(+), 41 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 09e315f8ea34..b7deacca1483 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2512,47 +2512,6 @@ void __init vm_area_register_early(struct vm_struct *vm, size_t align)
kasan_populate_early_vm_area_shadow(vm->addr, vm->size);
}
-static void vmap_init_free_space(void)
-{
- unsigned long vmap_start = 1;
- const unsigned long vmap_end = ULONG_MAX;
- struct vmap_area *busy, *free;
-
- /*
- * B F B B B F
- * -|-----|.....|-----|-----|-----|.....|-
- * | The KVA space |
- * |<--------------------------------->|
- */
- list_for_each_entry(busy, &vmap_area_list, list) {
- if (busy->va_start - vmap_start > 0) {
- free = kmem_cache_zalloc(vmap_area_cachep, GFP_NOWAIT);
- if (!WARN_ON_ONCE(!free)) {
- 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);
- }
- }
-
- vmap_start = busy->va_end;
- }
-
- if (vmap_end - vmap_start > 0) {
- free = kmem_cache_zalloc(vmap_area_cachep, GFP_NOWAIT);
- if (!WARN_ON_ONCE(!free)) {
- free->va_start = vmap_start;
- free->va_end = vmap_end;
-
- insert_vmap_area_augment(free, NULL,
- &free_vmap_area_root,
- &free_vmap_area_list);
- }
- }
-}
-
static inline void setup_vmalloc_vm_locked(struct vm_struct *vm,
struct vmap_area *va, unsigned long flags, const void *caller)
{
@@ -4443,6 +4402,47 @@ module_init(proc_vmalloc_init);
#endif
+static void vmap_init_free_space(void)
+{
+ unsigned long vmap_start = 1;
+ const unsigned long vmap_end = ULONG_MAX;
+ struct vmap_area *busy, *free;
+
+ /*
+ * B F B B B F
+ * -|-----|.....|-----|-----|-----|.....|-
+ * | The KVA space |
+ * |<--------------------------------->|
+ */
+ list_for_each_entry(busy, &vmap_area_list, list) {
+ if (busy->va_start - vmap_start > 0) {
+ free = kmem_cache_zalloc(vmap_area_cachep, GFP_NOWAIT);
+ if (!WARN_ON_ONCE(!free)) {
+ 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);
+ }
+ }
+
+ vmap_start = busy->va_end;
+ }
+
+ if (vmap_end - vmap_start > 0) {
+ free = kmem_cache_zalloc(vmap_area_cachep, GFP_NOWAIT);
+ if (!WARN_ON_ONCE(!free)) {
+ free->va_start = vmap_start;
+ free->va_end = vmap_end;
+
+ insert_vmap_area_augment(free, NULL,
+ &free_vmap_area_root,
+ &free_vmap_area_list);
+ }
+ }
+}
+
void __init vmalloc_init(void)
{
struct vmap_area *va;
--
2.30.2
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