diff options
| -rw-r--r-- | mm/vmalloc.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index f7a53c19e84b..612a3790cfd4 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2790,6 +2790,10 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, if (!pages) { free_vm_area(area); + warn_alloc(gfp_mask, NULL, + "vmalloc size %lu allocation failure: " + "page array size %lu allocation failed", + nr_small_pages * PAGE_SIZE, array_size); return NULL; } @@ -2814,6 +2818,10 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, /* Successfully allocated i pages, free them in __vfree() */ area->nr_pages = i; atomic_long_add(area->nr_pages, &nr_vmalloc_pages); + warn_alloc(gfp_mask, NULL, + "vmalloc size %lu allocation failure: " + "page order %u allocation failed", + area->nr_pages * PAGE_SIZE, page_order); goto fail; } @@ -2825,15 +2833,17 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, } atomic_long_add(area->nr_pages, &nr_vmalloc_pages); - if (vmap_pages_range(addr, addr + size, prot, pages, page_shift) < 0) + if (vmap_pages_range(addr, addr + size, prot, pages, page_shift) < 0) { + warn_alloc(gfp_mask, NULL, + "vmalloc size %lu allocation failure: " + "failed to map pages", + area->nr_pages * PAGE_SIZE); goto fail; + } return area->addr; fail: - warn_alloc(gfp_mask, NULL, - "vmalloc: allocation failure, allocated %ld of %ld bytes", - (area->nr_pages*PAGE_SIZE), size); __vfree(area->addr); return NULL; } @@ -2867,9 +2877,14 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align, unsigned long real_align = align; unsigned int shift = PAGE_SHIFT; - if (!size || (size >> PAGE_SHIFT) > totalram_pages()) { - area = NULL; - goto fail; + if (WARN_ON_ONCE(!size)) + return NULL; + + if ((size >> PAGE_SHIFT) > totalram_pages()) { + warn_alloc(gfp_mask, NULL, + "vmalloc size %lu allocation failure: " + "exceeds total pages", real_size); + return NULL; } if (vmap_allow_huge && !(vm_flags & VM_NO_HUGE_VMAP) && @@ -2897,8 +2912,12 @@ again: size = PAGE_ALIGN(size); area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNINITIALIZED | vm_flags, start, end, node, gfp_mask, caller); - if (!area) + if (!area) { + warn_alloc(gfp_mask, NULL, + "vmalloc size %lu allocation failure: " + "vm_struct allocation failed", real_size); goto fail; + } addr = __vmalloc_area_node(area, gfp_mask, prot, shift, node); if (!addr) @@ -2923,11 +2942,6 @@ fail: goto again; } - if (!area) { - /* Warn for area allocation, page allocations already warn */ - warn_alloc(gfp_mask, NULL, - "vmalloc: allocation failure: %lu bytes", real_size); - } return NULL; } |