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authorLinus Torvalds <torvalds@g5.osdl.org>2006-03-21 08:52:18 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-21 08:52:18 -0800
commitb05005772f34497eb2b7415a651fe785cbe70e16 (patch)
treeb176aeb7fa9baf69e77ddd83e844727490bfcf28 /mm/memory.c
parent044f324f6ea5d55391db62fca6a295b2651cb946 (diff)
parent7705a8792b0fc82fd7d4dd923724606bbfd9fb20 (diff)
Merge branch 'origin'
Conflicts: Documentation/video4linux/CARDLIST.cx88 drivers/media/video/cx88/Kconfig drivers/media/video/em28xx/em28xx-video.c drivers/media/video/saa7134/saa7134-dvb.c Resolved as in the original merge by Mauro Carvalho Chehab
Diffstat (limited to 'mm/memory.c')
-rw-r--r--mm/memory.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 7a11ddd5060..85e80a57db2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -82,6 +82,16 @@ EXPORT_SYMBOL(num_physpages);
EXPORT_SYMBOL(high_memory);
EXPORT_SYMBOL(vmalloc_earlyreserve);
+int randomize_va_space __read_mostly = 1;
+
+static int __init disable_randmaps(char *s)
+{
+ randomize_va_space = 0;
+ return 0;
+}
+__setup("norandmaps", disable_randmaps);
+
+
/*
* If a p?d_bad entry is found while walking page tables, report
* the error, before resetting entry to p?d_none. Usually (but
@@ -613,11 +623,12 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb,
(*zap_work)--;
continue;
}
+
+ (*zap_work) -= PAGE_SIZE;
+
if (pte_present(ptent)) {
struct page *page;
- (*zap_work) -= PAGE_SIZE;
-
page = vm_normal_page(vma, addr, ptent);
if (unlikely(details) && page) {
/*
@@ -1871,6 +1882,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
goto out;
entry = pte_to_swp_entry(orig_pte);
+again:
page = lookup_swap_cache(entry);
if (!page) {
swapin_readahead(entry, address, vma);
@@ -1894,6 +1906,12 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
mark_page_accessed(page);
lock_page(page);
+ if (!PageSwapCache(page)) {
+ /* Page migration has occured */
+ unlock_page(page);
+ page_cache_release(page);
+ goto again;
+ }
/*
* Back out if somebody else already faulted in this pte.