+ mm-vmalloc-move-vmap_init_free_space-down-in-vmallocc.patch added to mm-unstable branch

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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, 2 Jan 2024 19:46:25 +0100

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/20240102184633.748113-4-urezki@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Reviewed-by: Baoquan He <bhe@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Cc: Kazuhito Hagio <k-hagio-ab@xxxxxxx>
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-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-based-on-cpus-in-a-system.patch
mm-vmalloc-add-a-shrinker-to-drain-vmap-pools.patch





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