The patch titled
Subject: mm: vmalloc: move vmap_init_free_space() down in vmalloc.c
has been added to the -mm mm-unstable branch. Its filename is
mm-vmalloc-move-vmap_init_free_space-down-in-vmallocc.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmalloc-move-vmap_init_free_space-down-in-vmallocc.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx>
Subject: mm: vmalloc: move vmap_init_free_space() down in vmalloc.c
Date: Tue, 29 Aug 2023 10:11:36 +0200
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.
Link: https://lkml.kernel.org/r/20230829081142.3619-4-urezki@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Cc: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@xxxxxxxx>
Cc: Paul E. McKenney <paulmck@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 82 ++++++++++++++++++++++++-------------------------
1 file changed, 41 insertions(+), 41 deletions(-)
--- a/mm/vmalloc.c~mm-vmalloc-move-vmap_init_free_space-down-in-vmallocc
+++ a/mm/vmalloc.c
@@ -2512,47 +2512,6 @@ void __init vm_area_register_early(struc
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)
{
@@ -4465,6 +4424,47 @@ 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;
_
Patches currently in -mm which might be from urezki@xxxxxxxxx are
mm-vmalloc-add-va_alloc-helper.patch
mm-vmalloc-rename-adjust_va_to_fit_type-function.patch
mm-vmalloc-move-vmap_init_free_space-down-in-vmallocc.patch
mm-vmalloc-remove-global-vmap_area_root-rb-tree.patch
mm-vmalloc-remove-global-vmap_area_root-rb-tree-fix.patch
mm-vmalloc-remove-global-purge_vmap_area_root-rb-tree.patch
mm-vmalloc-offload-free_vmap_area_lock-lock.patch
mm-vmalloc-support-multiple-nodes-in-vread_iter.patch
mm-vmalloc-support-multiple-nodes-in-vmallocinfo.patch
mm-vmalloc-set-nr_nodes-node_size-based-on-cpu-cores.patch
