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authorNick Piggin <npiggin@suse.de>2006-03-22 00:08:04 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:53:57 -0800
commit8e7a9aae91101916b86de07fafe3272ea8dc1f10 (patch)
tree799beb54db0ec0b6c58c5d6cdc902fa570f8be90 /arch/xtensa/mm
parent8dc04efbfb3c08a08fb7a3b97348d5d561b26ae2 (diff)
downloadlinux-8e7a9aae91101916b86de07fafe3272ea8dc1f10.tar.gz
[PATCH] xtensa: pgtable fixes
- Don't return uninitialised stack values in case of allocation failure - Don't bother clearing PageCompound because __GFP_COMP wasn't specified Increment over the pte page rather than one pte entry in pte_alloc_one_kernel - Actually increment the page pointer in pte_alloc_one - Compile fixes, typos. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/xtensa/mm')
-rw-r--r--arch/xtensa/mm/pgtable.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/xtensa/mm/pgtable.c b/arch/xtensa/mm/pgtable.c
index e5e119c820e..cbc56aedf13 100644
--- a/arch/xtensa/mm/pgtable.c
+++ b/arch/xtensa/mm/pgtable.c
@@ -14,7 +14,7 @@
pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
- pte_t *pte, p;
+ pte_t *pte = NULL, *p;
int color = ADDR_COLOR(address);
int i;
@@ -23,16 +23,16 @@ pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
if (likely(p)) {
struct page *page;
- for (i = 0; i < COLOR_SIZE; i++, p++) {
- page = virt_to_page(pte);
+ for (i = 0; i < COLOR_SIZE; i++) {
+ page = virt_to_page(p);
set_page_count(page, 1);
- ClearPageCompound(page);
if (ADDR_COLOR(p) == color)
pte = p;
else
free_page(p);
+ p += PTRS_PER_PTE;
}
clear_page(pte);
}
@@ -49,7 +49,7 @@ int flush;
struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
- struct page *page, p;
+ struct page *page = NULL, *p;
int color = ADDR_COLOR(address);
p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
@@ -57,12 +57,12 @@ struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address)
if (likely(p)) {
for (i = 0; i < PAGE_ORDER; i++) {
set_page_count(p, 1);
- ClearPageCompound(p);
- if (PADDR_COLOR(page_address(pg)) == color)
+ if (PADDR_COLOR(page_address(p)) == color)
page = p;
else
- free_page(p);
+ __free_page(p);
+ p++;
}
clear_highpage(page);
}