diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 568f6c0b1fb5e..25a8df4972554 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -4696,34 +4696,35 @@ void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms) #ifdef CONFIG_PRINTK bool vmalloc_dump_obj(void *object) { - void *objp = (void *)PAGE_ALIGN((unsigned long)object); const void *caller; + struct vm_struct *vm; struct vmap_area *va; struct vmap_node *vn; unsigned long addr; unsigned int nr_pages; - bool success = false; - - vn = addr_to_node((unsigned long)objp); - if (spin_trylock(&vn->busy.lock)) { - va = __find_vmap_area((unsigned long)objp, &vn->busy.root); + addr = PAGE_ALIGN((unsigned long) object); + vn = addr_to_node(addr); - if (va && va->vm) { - addr = (unsigned long)va->vm->addr; - caller = va->vm->caller; - nr_pages = va->vm->nr_pages; - success = true; - } + if (!spin_trylock(&vn->busy.lock)) + return false; + va = __find_vmap_area(addr, &vn->busy.root); + if (!va || !va->vm) { spin_unlock(&vn->busy.lock); + return false; } - if (success) - pr_cont(" %u-page vmalloc region starting at %#lx allocated at %pS\n", - nr_pages, addr, caller); + vm = va->vm; + addr = (unsigned long) vm->addr; + caller = vm->caller; + nr_pages = vm->nr_pages; + spin_unlock(&vn->busy.lock); - return success; + pr_cont(" %u-page vmalloc region starting at %#lx allocated at %pS\n", + nr_pages, addr, caller); + + return true; } #endif |