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-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c6
-rw-r--r--arch/ppc/kernel/ppc_ksyms.c2
-rw-r--r--drivers/scsi/megaraid.c29
-rw-r--r--include/linux/mm.h1
-rw-r--r--mm/memory.c98
-rw-r--r--mm/rmap.c2
-rw-r--r--net/ipv6/addrconf.c2
7 files changed, 116 insertions, 24 deletions
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index af4d1bc..94db257 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -163,15 +163,13 @@ EXPORT_SYMBOL(giveup_altivec);
EXPORT_SYMBOL(giveup_spe);
#endif /* CONFIG_SPE */
-#ifdef CONFIG_PPC64
-EXPORT_SYMBOL(__flush_icache_range);
-#else
+#ifndef CONFIG_PPC64
EXPORT_SYMBOL(flush_instruction_cache);
-EXPORT_SYMBOL(flush_icache_range);
EXPORT_SYMBOL(flush_tlb_kernel_range);
EXPORT_SYMBOL(flush_tlb_page);
EXPORT_SYMBOL(_tlbie);
#endif
+EXPORT_SYMBOL(__flush_icache_range);
EXPORT_SYMBOL(flush_dcache_range);
#ifdef CONFIG_SMP
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index 66073f7..bb6a5c6 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -184,7 +184,7 @@ EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(flush_instruction_cache);
EXPORT_SYMBOL(giveup_fpu);
-EXPORT_SYMBOL(flush_icache_range);
+EXPORT_SYMBOL(__flush_icache_range);
EXPORT_SYMBOL(flush_dcache_range);
EXPORT_SYMBOL(flush_icache_user_range);
EXPORT_SYMBOL(flush_dcache_page);
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index dfea346..f979252 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -380,23 +380,23 @@ megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
spin_lock_irqsave(&adapter->lock, flags);
scb = mega_build_cmd(adapter, scmd, &busy);
+ if (!scb)
+ goto out;
- if(scb) {
- scb->state |= SCB_PENDQ;
- list_add_tail(&scb->list, &adapter->pending_list);
+ scb->state |= SCB_PENDQ;
+ list_add_tail(&scb->list, &adapter->pending_list);
- /*
- * Check if the HBA is in quiescent state, e.g., during a
- * delete logical drive opertion. If it is, don't run
- * the pending_list.
- */
- if(atomic_read(&adapter->quiescent) == 0) {
- mega_runpendq(adapter);
- }
- return 0;
- }
- spin_unlock_irqrestore(&adapter->lock, flags);
+ /*
+ * Check if the HBA is in quiescent state, e.g., during a
+ * delete logical drive opertion. If it is, don't run
+ * the pending_list.
+ */
+ if (atomic_read(&adapter->quiescent) == 0)
+ mega_runpendq(adapter);
+ busy = 0;
+ out:
+ spin_unlock_irqrestore(&adapter->lock, flags);
return busy;
}
@@ -4677,7 +4677,6 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
adapter->flag = flag;
spin_lock_init(&adapter->lock);
- scsi_assign_lock(host, &adapter->lock);
host->cmd_per_lun = max_cmd_per_lun;
host->max_sectors = max_sectors_per_io;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6a75a7a..74f90d7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -163,6 +163,7 @@ extern unsigned int kobjsize(const void *objp);
#define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */
#define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */
#define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */
+#define VM_INCOMPLETE 0x02000000 /* Strange partial PFN mapping marker */
#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
diff --git a/mm/memory.c b/mm/memory.c
index 9ab206b..990e7dc6 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -988,7 +988,7 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
return i ? : -EFAULT;
}
if (pages) {
- struct page *page = vm_normal_page(vma, start, *pte);
+ struct page *page = vm_normal_page(gate_vma, start, *pte);
pages[i] = page;
if (page)
get_page(page);
@@ -1147,6 +1147,95 @@ int zeromap_page_range(struct vm_area_struct *vma,
}
/*
+ * This is the old fallback for page remapping.
+ *
+ * For historical reasons, it only allows reserved pages. Only
+ * old drivers should use this, and they needed to mark their
+ * pages reserved for the old functions anyway.
+ */
+static int insert_page(struct mm_struct *mm, unsigned long addr, struct page *page, pgprot_t prot)
+{
+ int retval;
+ pgd_t * pgd;
+ pud_t * pud;
+ pmd_t * pmd;
+ pte_t * pte;
+ spinlock_t *ptl;
+
+ retval = -EINVAL;
+ if (PageAnon(page) || !PageReserved(page))
+ goto out;
+ retval = -ENOMEM;
+ flush_dcache_page(page);
+ pgd = pgd_offset(mm, addr);
+ pud = pud_alloc(mm, pgd, addr);
+ if (!pud)
+ goto out;
+ pmd = pmd_alloc(mm, pud, addr);
+ if (!pmd)
+ goto out;
+ pte = pte_alloc_map_lock(mm, pmd, addr, &ptl);
+ if (!pte)
+ goto out;
+ retval = -EBUSY;
+ if (!pte_none(*pte))
+ goto out_unlock;
+
+ /* Ok, finally just insert the thing.. */
+ get_page(page);
+ inc_mm_counter(mm, file_rss);
+ page_add_file_rmap(page);
+ set_pte_at(mm, addr, pte, mk_pte(page, prot));
+
+ retval = 0;
+out_unlock:
+ pte_unmap_unlock(pte, ptl);
+out:
+ return retval;
+}
+
+/*
+ * Somebody does a pfn remapping that doesn't actually work as a vma.
+ *
+ * Do it as individual pages instead, and warn about it. It's bad form,
+ * and very inefficient.
+ */
+static int incomplete_pfn_remap(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ unsigned long pfn, pgprot_t prot)
+{
+ static int warn = 10;
+ struct page *page;
+ int retval;
+
+ if (!(vma->vm_flags & VM_INCOMPLETE)) {
+ if (warn) {
+ warn--;
+ printk("%s does an incomplete pfn remapping", current->comm);
+ dump_stack();
+ }
+ }
+ vma->vm_flags |= VM_INCOMPLETE | VM_IO | VM_RESERVED;
+
+ if (start < vma->vm_start || end > vma->vm_end)
+ return -EINVAL;
+
+ if (!pfn_valid(pfn))
+ return -EINVAL;
+
+ retval = 0;
+ page = pfn_to_page(pfn);
+ while (start < end) {
+ retval = insert_page(vma->vm_mm, start, page, prot);
+ if (retval < 0)
+ break;
+ start += PAGE_SIZE;
+ page++;
+ }
+ return retval;
+}
+
+/*
* maps a range of physical memory into the requested pages. the old
* mappings are removed. any references to nonexistent pages results
* in null mappings (currently treated as "copy-on-access")
@@ -1220,6 +1309,9 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
struct mm_struct *mm = vma->vm_mm;
int err;
+ if (addr != vma->vm_start || end != vma->vm_end)
+ return incomplete_pfn_remap(vma, addr, end, pfn, prot);
+
/*
* Physically remapped pages are special. Tell the
* rest of the world about it:
@@ -1345,7 +1437,7 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
int reuse = can_share_swap_page(old_page);
unlock_page(old_page);
if (reuse) {
- flush_cache_page(vma, address, pfn);
+ flush_cache_page(vma, address, pte_pfn(orig_pte));
entry = pte_mkyoung(orig_pte);
entry = maybe_mkwrite(pte_mkdirty(entry), vma);
ptep_set_access_flags(vma, address, page_table, entry, 1);
@@ -1389,7 +1481,7 @@ gotten:
}
} else
inc_mm_counter(mm, anon_rss);
- flush_cache_page(vma, address, pfn);
+ flush_cache_page(vma, address, pte_pfn(orig_pte));
entry = mk_pte(new_page, vma->vm_page_prot);
entry = maybe_mkwrite(pte_mkdirty(entry), vma);
ptep_establish(vma, address, page_table, entry);
diff --git a/mm/rmap.c b/mm/rmap.c
index 491ac35..f853c6d 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -641,7 +641,7 @@ static void try_to_unmap_cluster(unsigned long cursor,
continue;
/* Nuke the page table entry. */
- flush_cache_page(vma, address, pfn);
+ flush_cache_page(vma, address, pte_pfn(*pte));
pteval = ptep_clear_flush(vma, address, pte);
/* If nonlinear, store the file page offset in the pte. */
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a16064b..76ff9f4 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -985,6 +985,8 @@ int ipv6_dev_get_saddr(struct net_device *daddr_dev,
}
/* Rule 4: Prefer home address -- not implemented yet */
+ if (hiscore.rule < 4)
+ hiscore.rule++;
/* Rule 5: Prefer outgoing interface */
if (hiscore.rule < 5) {
generated by cgit v1.1 at 2024-09-19 13:20:56 +0000