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| author | Nick Piggin <npiggin@suse.de> | 2006-03-22 09:08:04 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 16:53:57 +0100 |
| commit | 8e7a9aae91101916b86de07fafe3272ea8dc1f10 (patch) | |
| tree | 799beb54db0ec0b6c58c5d6cdc902fa570f8be90 | |
| parent | [PATCH] mm: de-skew page refcounting (diff) | |
| download | linux-8e7a9aae91101916b86de07fafe3272ea8dc1f10.tar.xz linux-8e7a9aae91101916b86de07fafe3272ea8dc1f10.zip | |
[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>
| -rw-r--r-- | arch/xtensa/mm/pgtable.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/xtensa/mm/pgtable.c b/arch/xtensa/mm/pgtable.c index e5e119c820e4..cbc56aedf13e 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); } |