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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-08 21:08:44 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-18 14:54:26 +1100 |
| commit | 50891457f1001450be61be0861b2b49abdcb5fb9 (patch) | |
| tree | 655ba01774854f86665aca52478527e8798fa520 /arch | |
| parent | 030bdc3fd0807b6097a937468859f4b4baf1b950 (diff) | |
| download | linux-3.10-50891457f1001450be61be0861b2b49abdcb5fb9.tar.gz linux-3.10-50891457f1001450be61be0861b2b49abdcb5fb9.tar.bz2 linux-3.10-50891457f1001450be61be0861b2b49abdcb5fb9.zip | |
powerpc/mm: Fix a WARN_ON() with CONFIG_DEBUG_PAGEALLOC and CONFIG_DEBUG_VM
Set need to call __set_pte_at() and not set_pte_at() from __change_page_attr()
since the later will perform checks with CONFIG_DEBUG_VM that aren't suitable
to the way we override an existing PTE. (More specifically, it doesn't let
you write over a present PTE).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 177e4038b43..573b3bd1c45 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -382,7 +382,7 @@ static int __change_page_attr(struct page *page, pgprot_t prot) return 0; if (!get_pteptr(&init_mm, address, &kpte, &kpmd)) return -EINVAL; - set_pte_at(&init_mm, address, kpte, mk_pte(page, prot)); + __set_pte_at(&init_mm, address, kpte, mk_pte(page, prot), 0); wmb(); #ifdef CONFIG_PPC_STD_MMU flush_hash_pages(0, address, pmd_val(*kpmd), 1); |