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authorRafael J. Wysocki <rjw@sisk.pl>2006-09-25 23:32:49 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:59 -0700
commitf623f0db8e6aa86a37be86167e4ff478821a9f4f (patch)
treefab12e8dc57d14101e9e512ba708b83f74551dd9 /kernel
parente3920fb42c8ddfe63befb54d95c0e13eabacea9b (diff)
[PATCH] swsusp: Fix mark_free_pages
Clean up mm/page_alloc.c#mark_free_pages() and make it avoid clearing PageNosaveFree for PageNosave pages. This allows us to get rid of an ugly hack in kernel/power/snapshot.c#copy_data_pages(). Additionally, the page-copying loop in copy_data_pages() is moved to an inline function. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/snapshot.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 81fe8de9e60..4afb7900002 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -208,37 +208,36 @@ unsigned int count_data_pages(void)
return n;
}
+static inline void copy_data_page(long *dst, long *src)
+{
+ int n;
+
+ /* copy_page and memcpy are not usable for copying task structs. */
+ for (n = PAGE_SIZE / sizeof(long); n; n--)
+ *dst++ = *src++;
+}
+
static void copy_data_pages(struct pbe *pblist)
{
struct zone *zone;
unsigned long pfn, max_zone_pfn;
- struct pbe *pbe, *p;
+ struct pbe *pbe;
pbe = pblist;
for_each_zone (zone) {
if (is_highmem(zone))
continue;
mark_free_pages(zone);
- /* This is necessary for swsusp_free() */
- for_each_pb_page (p, pblist)
- SetPageNosaveFree(virt_to_page(p));
- for_each_pbe (p, pblist)
- SetPageNosaveFree(virt_to_page(p->address));
max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++) {
struct page *page = saveable_page(pfn);
if (page) {
- long *src, *dst;
- int n;
+ void *ptr = page_address(page);
BUG_ON(!pbe);
- pbe->orig_address = (unsigned long)page_address(page);
- /* copy_page and memcpy are not usable for copying task structs. */
- dst = (long *)pbe->address;
- src = (long *)pbe->orig_address;
- for (n = PAGE_SIZE / sizeof(long); n; n--)
- *dst++ = *src++;
+ copy_data_page((void *)pbe->address, ptr);
+ pbe->orig_address = (unsigned long)ptr;
pbe = pbe->next;
}
}