diff options
Diffstat (limited to 'kernel/power/snapshot.c')
| -rw-r--r-- | kernel/power/snapshot.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 46455aa7951e..336e56e97b8d 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1680,8 +1680,8 @@ static unsigned long minimum_image_size(unsigned long saveable) * /sys/power/reserved_size, respectively). To make this happen, we compute the * total number of available page frames and allocate at least * - * ([page frames total] + PAGES_FOR_IO + [metadata pages]) / 2 - * + 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE) + * ([page frames total] - PAGES_FOR_IO - [metadata pages]) / 2 + * - 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE) * * of them, which corresponds to the maximum size of a hibernation image. * @@ -2377,8 +2377,9 @@ static void *get_highmem_page_buffer(struct page *page, pbe->copy_page = tmp; } else { /* Copy of the page will be stored in normal memory */ - kaddr = safe_pages_list; - safe_pages_list = safe_pages_list->next; + kaddr = __get_safe_page(ca->gfp_mask); + if (!kaddr) + return ERR_PTR(-ENOMEM); pbe->copy_page = virt_to_page(kaddr); } pbe->next = highmem_pblist; @@ -2558,8 +2559,9 @@ static void *get_buffer(struct memory_bitmap *bm, struct chain_allocator *ca) return ERR_PTR(-ENOMEM); } pbe->orig_address = page_address(page); - pbe->address = safe_pages_list; - safe_pages_list = safe_pages_list->next; + pbe->address = __get_safe_page(ca->gfp_mask); + if (!pbe->address) + return ERR_PTR(-ENOMEM); pbe->next = restore_pblist; restore_pblist = pbe; return pbe->address; @@ -2590,8 +2592,6 @@ int snapshot_write_next(struct snapshot_handle *handle) if (handle->cur > 1 && handle->cur > nr_meta_pages + nr_copy_pages) return 0; - handle->sync_read = 1; - if (!handle->cur) { if (!buffer) /* This makes the buffer be freed by swsusp_free() */ @@ -2632,7 +2632,6 @@ int snapshot_write_next(struct snapshot_handle *handle) memory_bm_position_reset(&orig_bm); restore_pblist = NULL; handle->buffer = get_buffer(&orig_bm, &ca); - handle->sync_read = 0; if (IS_ERR(handle->buffer)) return PTR_ERR(handle->buffer); } @@ -2644,9 +2643,8 @@ int snapshot_write_next(struct snapshot_handle *handle) handle->buffer = get_buffer(&orig_bm, &ca); if (IS_ERR(handle->buffer)) return PTR_ERR(handle->buffer); - if (handle->buffer != buffer) - handle->sync_read = 0; } + handle->sync_read = (handle->buffer == buffer); handle->cur++; return PAGE_SIZE; } |