From f1c4069e1dc128dc8a851174cba2e273652e9216 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Mon, 29 Apr 2013 15:07:37 -0700 Subject: mm, vmalloc: export vmap_area_list, instead of vmlist Although our intention is to unexport internal structure entirely, but there is one exception for kexec. kexec dumps address of vmlist and makedumpfile uses this information. We are about to remove vmlist, then another way to retrieve information of vmalloc layer is needed for makedumpfile. For this purpose, we export vmap_area_list, instead of vmlist. Signed-off-by: Joonsoo Kim Signed-off-by: Joonsoo Kim Cc: Eric Biederman Cc: Dave Anderson Cc: Vivek Goyal Cc: Atsushi Kumagai Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Chris Metcalf Cc: Guan Xuetao Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/nommu.c | 3 +-- mm/vmalloc.c | 11 ++++++----- 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'mm') diff --git a/mm/nommu.c b/mm/nommu.c index e001768b14e8..2f1c75ed468e 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -228,8 +228,7 @@ int follow_pfn(struct vm_area_struct *vma, unsigned long address, } EXPORT_SYMBOL(follow_pfn); -DEFINE_RWLOCK(vmlist_lock); -struct vm_struct *vmlist; +LIST_HEAD(vmap_area_list); void vfree(const void *addr) { diff --git a/mm/vmalloc.c b/mm/vmalloc.c index bda6cef5b97f..7e63984eb585 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -261,7 +261,8 @@ struct vmap_area { }; static DEFINE_SPINLOCK(vmap_area_lock); -static LIST_HEAD(vmap_area_list); +/* Export for kexec only */ +LIST_HEAD(vmap_area_list); static struct rb_root vmap_area_root = RB_ROOT; /* The vmap cache globals are protected by vmap_area_lock */ @@ -272,6 +273,10 @@ static unsigned long cached_align; static unsigned long vmap_area_pcpu_hole; +/*** Old vmalloc interfaces ***/ +static DEFINE_RWLOCK(vmlist_lock); +static struct vm_struct *vmlist; + static struct vmap_area *__find_vmap_area(unsigned long addr) { struct rb_node *n = vmap_area_root.rb_node; @@ -1283,10 +1288,6 @@ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages) } EXPORT_SYMBOL_GPL(map_vm_area); -/*** Old vmalloc interfaces ***/ -DEFINE_RWLOCK(vmlist_lock); -struct vm_struct *vmlist; - static void setup_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va, unsigned long flags, const void *caller) { -- cgit v1.2.3-58-ga151