/* * mm/pgtable-generic.c * * Generic pgtable methods declared in asm-generic/pgtable.h * * Copyright (C) 2010 Linus Torvalds */ #include <linux/pagemap.h> #include <asm/tlb.h> #include <asm-generic/pgtable.h> /* * If a p?d_bad entry is found while walking page tables, report * the error, before resetting entry to p?d_none. Usually (but * very seldom) called out from the p?d_none_or_clear_bad macros. */ void pgd_clear_bad(pgd_t *pgd) { pgd_ERROR(*pgd); pgd_clear(pgd); } void pud_clear_bad(pud_t *pud) { pud_ERROR(*pud); pud_clear(pud); } void pmd_clear_bad(pmd_t *pmd) { pmd_ERROR(*pmd); pmd_clear(pmd); } #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS /* * Only sets the access flags (dirty, accessed), as well as write * permission. Furthermore, we know it always gets set to a "more * permissive" setting, which allows most architectures to optimize * this. We return whether the PTE actually changed, which in turn * instructs the caller to do things like update__mmu_cache. This * used to be done in the caller, but sparc needs minor faults to * force that call on sun4c so we changed this macro slightly */ int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, pte_t *ptep, pte_t entry, int dirty) { int changed = !pte_same(*ptep, entry); if (changed) { set_pte_at(vma->vm_mm, address, ptep, entry); flush_tlb_fix_spurious_fault(vma, address); } return changed; } #endif #ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH int ptep_clear_flush_young(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) { int young; young = ptep_test_and_clear_young(vma, address, ptep); if (young) flush_tlb_page(vma, address); return young; } #endif #ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) { struct mm_struct *mm = (vma)->vm_mm; pte_t pte; pte = ptep_get_and_clear(mm, address, ptep); if (pte_accessible(mm, pte)) flush_tlb_page(vma, address); return pte; } #endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE #ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp, pmd_t entry, int dirty) { int changed = !pmd_same(*pmdp, entry); VM_BUG_ON(address & ~HPAGE_PMD_MASK); if (changed) { set_pmd_at(vma->vm_mm, address, pmdp, entry); flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE); } return changed; } #endif #ifndef __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH int pmdp_clear_flush_young(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) { int young; VM_BUG_ON(address & ~HPAGE_PMD_MASK); young = pmdp_test_and_clear_young(vma, address, pmdp); if (young) flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE); return young; } #endif #ifndef __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) { pmd_t pmd; VM_BUG_ON(address & ~HPAGE_PMD_MASK); VM_BUG_ON(!pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp)); pmd = pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp); flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE); return pmd; } #endif #ifndef __HAVE_ARCH_PGTABLE_DEPOSIT void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, pgtable_t pgtable) { assert_spin_locked(pmd_lockptr(mm, pmdp)); /* FIFO */ if (!pmd_huge_pte(mm, pmdp)) INIT_LIST_HEAD(&pgtable->lru); else list_add(&pgtable->lru, &pmd_huge_pte(mm, pmdp)->lru); pmd_huge_pte(mm, pmdp) = pgtable; } #endif #ifndef __HAVE_ARCH_PGTABLE_WITHDRAW /* no "address" argument so destroys page coloring of some arch */ pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp) { pgtable_t pgtable; assert_spin_locked(pmd_lockptr(mm, pmdp)); /* FIFO */ pgtable = pmd_huge_pte(mm, pmdp); pmd_huge_pte(mm, pmdp) = list_first_entry_or_null(&pgtable->lru, struct page, lru); if (pmd_huge_pte(mm, pmdp)) list_del(&pgtable->lru); return pgtable; } #endif #ifndef __HAVE_ARCH_PMDP_INVALIDATE void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) { pmd_t entry = *pmdp; set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(entry)); flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE); } #endif #ifndef pmdp_collapse_flush pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) { /* * pmd and hugepage pte format are same. So we could * use the same function. */ pmd_t pmd; VM_BUG_ON(address & ~HPAGE_PMD_MASK); VM_BUG_ON(pmd_trans_huge(*pmdp)); pmd = pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp); /* collapse entails shooting down ptes not pmd */ flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE); return pmd; } #endif #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ 0405aa2e6c0d6a4305c77b70758d168'>48656835c0405aa2e6c0d6a4305c77b70758d168</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net?id=48656835c0405aa2e6c0d6a4305c77b70758d168'>patch</a>)</td></tr> <tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>7c43db5f1df7b0f7e534f5e1143fe1fd15657442</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>net</a></td></tr> <tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&id=b745d0358db44ebcef31478314436d6d4ff93bfa'>b745d0358db44ebcef31478314436d6d4ff93bfa</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168&id2=b745d0358db44ebcef31478314436d6d4ff93bfa'>diff</a>)</td></tr></table> <div class='commit-subject'>netfilter: nfnetlink: add nfnetlink_rcv_skb_batch()</div><div class='commit-msg'>Add new nfnetlink_rcv_skb_batch() to wrap initial nfnetlink batch handling. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> </div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>Diffstat</a> (limited to 'net')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/net/netfilter/nfnetlink.c?h=nds-private-remove&id=48656835c0405aa2e6c0d6a4305c77b70758d168'>net/netfilter/nfnetlink.c</a></td><td class='right'>51</td><td class='graph'><table summary='file diffstat' width='51%'><tr><td class='add' style='width: 54.9%;'/><td class='rem' style='width: 45.1%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr> </table><div class='diffstat-summary'>1 files changed, 28 insertions, 23 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c