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mm: split out vmalloc declarations from internal.h

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mm/internal.h becomes more and more bloated.

Move declarations related to vmalloc to a new mm/vmalloc.h header.

No functional changes.

Link: https://lore.kernel.org/20260709-internal-h-v2-3-695631425968@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Muchun Song <muchun.song@linux.dev>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Lorenzo Stoakes <ljs@kernel.org>
Acked-by: Pratyush Yadav <pratyush@kernel.org>
Acked-by: SJ Park <sj@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Brendan Jackman <brendan.jackman@linux.dev>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Marco Elver <elver@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mike Rapoport (Microsoft) 2026-07-09 13:00:05 +03:00 committed by Andrew Morton
parent 2b65a42a08
commit ef79e0f5e3
10 changed files with 54 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
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@ -28818,6 +28818,7 @@ W: http://www.linux-mm.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
F: include/linux/vmalloc.h
F: mm/vmalloc.c
F: mm/vmalloc.h
F: lib/test_vmalloc.c
VME SUBSYSTEM

2
kernel/liveupdate/kexec_handover.c
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@ -34,8 +34,8 @@
* KHO is tightly coupled with mm init and needs access to some of mm
* internal APIs.
*/
#include "../../mm/internal.h"
#include "../../mm/mm_init.h"
#include "../../mm/vmalloc.h"
#include "../kexec_internal.h"
#include "kexec_handover_internal.h"

1
mm/execmem.c
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@ -20,6 +20,7 @@
#include <asm/tlbflush.h>
#include "internal.h"
#include "vmalloc.h"
static struct execmem_info *execmem_info __ro_after_init;
static struct execmem_info default_execmem_info __ro_after_init;

40
mm/internal.h
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@ -1092,9 +1092,6 @@ static inline void mlock_new_folio(struct folio *folio) { }
static inline bool need_mlock_drain(int cpu) { return false; }
static inline void mlock_drain_local(void) { }
static inline void mlock_drain_remote(int cpu) { }
static inline void vunmap_range_noflush(unsigned long start, unsigned long end)
{
}
#endif /* !CONFIG_MMU */
#define NODE_RECLAIM_NOSCAN -2
@ -1209,37 +1206,6 @@ struct migration_target_control {
size_t splice_folio_into_pipe(struct pipe_inode_info *pipe,
struct folio *folio, loff_t fpos, size_t size);
/*
* mm/vmalloc.c
*/
#ifdef CONFIG_MMU
void __init vmalloc_init(void);
int __must_check vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages, unsigned int page_shift, gfp_t gfp_mask);
unsigned int get_vm_area_page_order(struct vm_struct *vm);
#else
static inline void vmalloc_init(void)
{
}
static inline
int __must_check vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages, unsigned int page_shift, gfp_t gfp_mask)
{
return -EINVAL;
}
#endif
void clear_vm_uninitialized_flag(struct vm_struct *vm);
int __must_check __vmap_pages_range_noflush(unsigned long addr,
unsigned long end, pgprot_t prot,
struct page **pages, unsigned int page_shift);
void vunmap_range_noflush(unsigned long start, unsigned long end);
void __vunmap_range_noflush(unsigned long start, unsigned long end);
static inline bool vma_is_single_threaded_private(struct vm_area_struct *vma)
{
if (vma->vm_flags & VM_SHARED)
@ -1267,12 +1233,6 @@ int numa_migrate_check(struct folio *folio, struct vm_fault *vmf,
void free_zone_device_folio(struct folio *folio);
int migrate_device_coherent_folio(struct folio *folio);
struct vm_struct *__get_vm_area_node(unsigned long size,
unsigned long align, unsigned long shift,
unsigned long vm_flags, unsigned long start,
unsigned long end, int node, gfp_t gfp_mask,
const void *caller);
/*
* mm/gup.c
*/

1
mm/kmsan/hooks.c
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@ -21,6 +21,7 @@
#include <linux/usb.h>
#include "../internal.h"
#include "../vmalloc.h"
#include "../slab.h"
#include "kmsan.h"

1
mm/kmsan/shadow.c
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@ -17,6 +17,7 @@
#include <linux/stddef.h>
#include "../internal.h"
#include "../vmalloc.h"
#include "kmsan.h"
#define shadow_page_for(page) ((page)->kmsan_shadow)

1
mm/mm_init.c
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@ -38,6 +38,7 @@
#include "sparse.h"
#include "slab.h"
#include "shuffle.h"
#include "vmalloc.h"
#include <asm/setup.h>

1
mm/percpu-vm.c
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@ -9,6 +9,7 @@
* This is the default chunk allocator.
*/
#include "internal.h"
#include "vmalloc.h"
static struct page *pcpu_chunk_page(struct pcpu_chunk *chunk,
unsigned int cpu, int page_idx)

1
mm/vmalloc.c
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@ -49,6 +49,7 @@
#include "internal.h"
#include "pgalloc-track.h"
#include "vmalloc.h"
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
static unsigned int __ro_after_init ioremap_max_page_shift = BITS_PER_LONG - 1;

46
mm/vmalloc.h Normal file
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@ -0,0 +1,46 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* mm-internal APIs for vmalloc
*/
#ifndef __MM_VMALLOC_H
#define __MM_VMALLOC_H
#ifdef CONFIG_MMU
void __init vmalloc_init(void);
int __must_check vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages,
unsigned int page_shift, gfp_t gfp_mask);
unsigned int get_vm_area_page_order(struct vm_struct *vm);
#else
static inline void vmalloc_init(void) {}
static inline
int __must_check vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages,
unsigned int page_shift, gfp_t gfp_mask)
{
return -EINVAL;
}
static inline void vunmap_range_noflush(unsigned long start, unsigned long end)
{
}
#endif
struct vm_struct *__get_vm_area_node(unsigned long size,
unsigned long align, unsigned long shift,
unsigned long vm_flags, unsigned long start,
unsigned long end, int node, gfp_t gfp_mask,
const void *caller);
void clear_vm_uninitialized_flag(struct vm_struct *vm);
int __must_check __vmap_pages_range_noflush(unsigned long addr,
unsigned long end, pgprot_t prot,
struct page **pages, unsigned int page_shift);
void vunmap_range_noflush(unsigned long start, unsigned long end);
void __vunmap_range_noflush(unsigned long start, unsigned long end);
#endif /* __MM_VMALLOC_H */