From 7be9823491ecbaf9700d7d3502cb4b4dd0ed868a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 6 May 2007 14:50:42 -0700 Subject: swsusp: use inline functions for changing page flags Replace direct invocations of SetPageNosave(), SetPageNosaveFree() etc. with calls to inline functions that can be changed in subsequent patches without modifying the code calling them. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/power/snapshot.c | 48 +++++++++++++++++++++++++----------------------- 1 file changed, 25 insertions(+), 23 deletions(-) (limited to 'kernel/power') diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 704c25a3ffec..48fc7a35571b 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -67,15 +67,15 @@ static void *get_image_page(gfp_t gfp_mask, int safe_needed) res = (void *)get_zeroed_page(gfp_mask); if (safe_needed) - while (res && PageNosaveFree(virt_to_page(res))) { + while (res && swsusp_page_is_free(virt_to_page(res))) { /* The page is unsafe, mark it for swsusp_free() */ - SetPageNosave(virt_to_page(res)); + swsusp_set_page_forbidden(virt_to_page(res)); allocated_unsafe_pages++; res = (void *)get_zeroed_page(gfp_mask); } if (res) { - SetPageNosave(virt_to_page(res)); - SetPageNosaveFree(virt_to_page(res)); + swsusp_set_page_forbidden(virt_to_page(res)); + swsusp_set_page_free(virt_to_page(res)); } return res; } @@ -91,8 +91,8 @@ static struct page *alloc_image_page(gfp_t gfp_mask) page = alloc_page(gfp_mask); if (page) { - SetPageNosave(page); - SetPageNosaveFree(page); + swsusp_set_page_forbidden(page); + swsusp_set_page_free(page); } return page; } @@ -110,9 +110,9 @@ static inline void free_image_page(void *addr, int clear_nosave_free) page = virt_to_page(addr); - ClearPageNosave(page); + swsusp_unset_page_forbidden(page); if (clear_nosave_free) - ClearPageNosaveFree(page); + swsusp_unset_page_free(page); __free_page(page); } @@ -615,7 +615,8 @@ static struct page *saveable_highmem_page(unsigned long pfn) BUG_ON(!PageHighMem(page)); - if (PageNosave(page) || PageReserved(page) || PageNosaveFree(page)) + if (swsusp_page_is_forbidden(page) || swsusp_page_is_free(page) || + PageReserved(page)) return NULL; return page; @@ -670,7 +671,7 @@ static struct page *saveable_page(unsigned long pfn) BUG_ON(PageHighMem(page)); - if (PageNosave(page) || PageNosaveFree(page)) + if (swsusp_page_is_forbidden(page) || swsusp_page_is_free(page)) return NULL; if (PageReserved(page) && pfn_is_nosave(pfn)) @@ -810,9 +811,10 @@ void swsusp_free(void) if (pfn_valid(pfn)) { struct page *page = pfn_to_page(pfn); - if (PageNosave(page) && PageNosaveFree(page)) { - ClearPageNosave(page); - ClearPageNosaveFree(page); + if (swsusp_page_is_forbidden(page) && + swsusp_page_is_free(page)) { + swsusp_unset_page_forbidden(page); + swsusp_unset_page_free(page); __free_page(page); } } @@ -1135,7 +1137,7 @@ static int mark_unsafe_pages(struct memory_bitmap *bm) max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages; for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++) if (pfn_valid(pfn)) - ClearPageNosaveFree(pfn_to_page(pfn)); + swsusp_unset_page_free(pfn_to_page(pfn)); } /* Mark pages that correspond to the "original" pfns as "unsafe" */ @@ -1144,7 +1146,7 @@ static int mark_unsafe_pages(struct memory_bitmap *bm) pfn = memory_bm_next_pfn(bm); if (likely(pfn != BM_END_OF_MAP)) { if (likely(pfn_valid(pfn))) - SetPageNosaveFree(pfn_to_page(pfn)); + swsusp_set_page_free(pfn_to_page(pfn)); else return -EFAULT; } @@ -1310,14 +1312,14 @@ prepare_highmem_image(struct memory_bitmap *bm, unsigned int *nr_highmem_p) struct page *page; page = alloc_page(__GFP_HIGHMEM); - if (!PageNosaveFree(page)) { + if (!swsusp_page_is_free(page)) { /* The page is "safe", set its bit the bitmap */ memory_bm_set_bit(bm, page_to_pfn(page)); safe_highmem_pages++; } /* Mark the page as allocated */ - SetPageNosave(page); - SetPageNosaveFree(page); + swsusp_set_page_forbidden(page); + swsusp_set_page_free(page); } memory_bm_position_reset(bm); safe_highmem_bm = bm; @@ -1349,7 +1351,7 @@ get_highmem_page_buffer(struct page *page, struct chain_allocator *ca) struct highmem_pbe *pbe; void *kaddr; - if (PageNosave(page) && PageNosaveFree(page)) { + if (swsusp_page_is_forbidden(page) && swsusp_page_is_free(page)) { /* We have allocated the "original" page frame and we can * use it directly to store the loaded page. */ @@ -1511,14 +1513,14 @@ prepare_image(struct memory_bitmap *new_bm, struct memory_bitmap *bm) error = -ENOMEM; goto Free; } - if (!PageNosaveFree(virt_to_page(lp))) { + if (!swsusp_page_is_free(virt_to_page(lp))) { /* The page is "safe", add it to the list */ lp->next = safe_pages_list; safe_pages_list = lp; } /* Mark the page as allocated */ - SetPageNosave(virt_to_page(lp)); - SetPageNosaveFree(virt_to_page(lp)); + swsusp_set_page_forbidden(virt_to_page(lp)); + swsusp_set_page_free(virt_to_page(lp)); nr_pages--; } /* Free the reserved safe pages so that chain_alloc() can use them */ @@ -1547,7 +1549,7 @@ static void *get_buffer(struct memory_bitmap *bm, struct chain_allocator *ca) if (PageHighMem(page)) return get_highmem_page_buffer(page, ca); - if (PageNosave(page) && PageNosaveFree(page)) + if (swsusp_page_is_forbidden(page) && swsusp_page_is_free(page)) /* We have allocated the "original" page frame and we can * use it directly to store the loaded page. */ -- cgit v1.2.3-59-g8ed1b