diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 1d9878b7cf52..1bf94ad452b6 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1290,12 +1290,14 @@ struct vm_struct *vmlist; static void setup_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va, unsigned long flags, const void *caller) { + spin_lock(&vmap_area_lock); vm->flags = flags; vm->addr = (void *)va->va_start; vm->size = va->va_end - va->va_start; vm->caller = caller; va->vm = vm; va->flags |= VM_VM_AREA; + spin_unlock(&vmap_area_lock); } static void insert_vmalloc_vmlist(struct vm_struct *vm) @@ -1447,6 +1449,11 @@ struct vm_struct *remove_vm_area(const void *addr) if (va && va->flags & VM_VM_AREA) { struct vm_struct *vm = va->vm; + spin_lock(&vmap_area_lock); + va->vm = NULL; + va->flags &= ~VM_VM_AREA; + spin_unlock(&vmap_area_lock); + if (!(vm->flags & VM_UNLIST)) { struct vm_struct *tmp, **p; /* |