diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
commit | af7a535688a758d15f06a98833e6a143b29af9de (patch) | |
tree | bac5ab210bbbbe276f0e44ed84194d7c8bb16aae /arch/arm/mm/fault-armv.c | |
parent | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (diff) | |
parent | c41107c2d4fd31924533f4dbc4c3428acc2b5894 (diff) |
Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk
Diffstat (limited to 'arch/arm/mm/fault-armv.c')
-rw-r--r-- | arch/arm/mm/fault-armv.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index fbfa2605844..a8ec97b4752 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -37,7 +37,7 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address) pgd_t *pgd; pmd_t *pmd; pte_t *pte, entry; - int ret = 0; + int ret; pgd = pgd_offset(vma->vm_mm, address); if (pgd_none(*pgd)) @@ -55,15 +55,19 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address) entry = *pte; /* + * If this page is present, it's actually being shared. + */ + ret = pte_present(entry); + + /* * If this page isn't present, or is already setup to * fault (ie, is old), we can safely ignore any issues. */ - if (pte_present(entry) && pte_val(entry) & shared_pte_mask) { + if (ret && pte_val(entry) & shared_pte_mask) { flush_cache_page(vma, address, pte_pfn(entry)); pte_val(entry) &= ~shared_pte_mask; set_pte_at(vma->vm_mm, address, pte, entry); flush_tlb_page(vma, address); - ret = 1; } pte_unmap(pte); return ret; |