Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: Fetch cell pointer from platform_device->mfd_cell

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 49dbd78..e3c6a06 100644 (file)
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -238,6 +238,7 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 static __init void xen_init_cpuid_mask(void)
 {
        unsigned int ax, bx, cx, dx;
+       unsigned int xsave_mask;
 
        cpuid_leaf1_edx_mask =
                ~((1 << X86_FEATURE_MCE)  |  /* disable MCE */
@@ -249,24 +250,16 @@ static __init void xen_init_cpuid_mask(void)
                cpuid_leaf1_edx_mask &=
                        ~((1 << X86_FEATURE_APIC) |  /* disable local APIC */
                          (1 << X86_FEATURE_ACPI));  /* disable ACPI */
-
        ax = 1;
-       cx = 0;
        xen_cpuid(&ax, &bx, &cx, &dx);
 
-       /* cpuid claims we support xsave; try enabling it to see what happens */
-       if (cx & (1 << (X86_FEATURE_XSAVE % 32))) {
-               unsigned long cr4;
-
-               set_in_cr4(X86_CR4_OSXSAVE);
-               
-               cr4 = read_cr4();
+       xsave_mask =
+               (1 << (X86_FEATURE_XSAVE % 32)) |
+               (1 << (X86_FEATURE_OSXSAVE % 32));
 
-               if ((cr4 & X86_CR4_OSXSAVE) == 0)
-                       cpuid_leaf1_ecx_mask &= ~(1 << (X86_FEATURE_XSAVE % 32));
-
-               clear_in_cr4(X86_CR4_OSXSAVE);
-       }
+       /* Xen will set CR4.OSXSAVE if supported and not disabled by force */
+       if ((cx & xsave_mask) != xsave_mask)
+               cpuid_leaf1_ecx_mask &= ~xsave_mask; /* disable XSAVE & OSXSAVE */
 }
 
 static void xen_set_debugreg(int reg, unsigned long val)

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index c82df6c..a991b57 100644 (file)
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -565,13 +565,13 @@ pte_t xen_make_pte_debug(pteval_t pte)
        if (io_page &&
            (xen_initial_domain() || addr >= ISA_END_ADDRESS)) {
                other_addr = pfn_to_mfn(addr >> PAGE_SHIFT) << PAGE_SHIFT;
-               WARN(addr != other_addr,
+               WARN_ONCE(addr != other_addr,
                        "0x%lx is using VM_IO, but it is 0x%lx!\n",
                        (unsigned long)addr, (unsigned long)other_addr);
        } else {
                pteval_t iomap_set = (_pte.pte & PTE_FLAGS_MASK) & _PAGE_IOMAP;
                other_addr = (_pte.pte & PTE_PFN_MASK);
-               WARN((addr == other_addr) && (!io_page) && (!iomap_set),
+               WARN_ONCE((addr == other_addr) && (!io_page) && (!iomap_set),
                        "0x%lx is missing VM_IO (and wasn't fixed)!\n",
                        (unsigned long)addr);
        }

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 42d6c93..33167b4 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -912,8 +912,7 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
                              unsigned long irqflags,
                              const char *devname, void *dev_id)
 {
-       unsigned int irq;
-       int retval;
+       int irq, retval;
 
        irq = bind_evtchn_to_irq(evtchn);
        if (irq < 0)
@@ -955,8 +954,7 @@ int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
                            irq_handler_t handler,
                            unsigned long irqflags, const char *devname, void *dev_id)
 {
-       unsigned int irq;
-       int retval;
+       int irq, retval;
 
        irq = bind_virq_to_irq(virq, cpu);
        if (irq < 0)

diff --git a/fs/namespace.c b/fs/namespace.c
index 7dba2ed..d99bcf5 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1030,18 +1030,6 @@ const struct seq_operations mounts_op = {
        .show   = show_vfsmnt
 };
 
-static int uuid_is_nil(u8 *uuid)
-{
-       int i;
-       u8  *cp = (u8 *)uuid;
-
-       for (i = 0; i < 16; i++) {
-               if (*cp++)
-                       return 0;
-       }
-       return 1;
-}
-
 static int show_mountinfo(struct seq_file *m, void *v)
 {
        struct proc_mounts *p = m->private;
@@ -1085,10 +1073,6 @@ static int show_mountinfo(struct seq_file *m, void *v)
        if (IS_MNT_UNBINDABLE(mnt))
                seq_puts(m, " unbindable");
 
-       if (!uuid_is_nil(mnt->mnt_sb->s_uuid))
-               /* print the uuid */
-               seq_printf(m, " uuid:%pU", mnt->mnt_sb->s_uuid);
-
        /* Filesystem specific data */
        seq_puts(m, " - ");
        show_type(m, sb);

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index af0c627..e4cbc11 100644 (file)
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -542,11 +542,15 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, u
        if (!nfs_need_commit(nfsi))
                return 0;
 
+       spin_lock(&inode->i_lock);
        ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
        if (ret > 0)
                nfsi->ncommit -= ret;
+       spin_unlock(&inode->i_lock);
+
        if (nfs_need_commit(NFS_I(inode)))
                __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+
        return ret;
 }
 #else
@@ -1483,9 +1487,7 @@ int nfs_commit_inode(struct inode *inode, int how)
        res = nfs_commit_set_lock(NFS_I(inode), may_wait);
        if (res <= 0)
                goto out_mark_dirty;
-       spin_lock(&inode->i_lock);
        res = nfs_scan_commit(inode, &head, 0, 0);
-       spin_unlock(&inode->i_lock);
        if (res) {
                int error;
 

diff --git a/include/linux/fs.h b/include/linux/fs.h
index dbd860a..5b14843 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1403,7 +1403,6 @@ struct super_block {
        wait_queue_head_t       s_wait_unfrozen;
 
        char s_id[32];                          /* Informational name */
-       u8 s_uuid[16];                          /* UUID */
 
        void                    *s_fs_info;     /* Filesystem private info */
        fmode_t                 s_mode;

diff --git a/mm/memory.c b/mm/memory.c
index 9da8cab..b623a24 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1410,6 +1410,13 @@ no_page_table:
        return page;
 }
 
+static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr)
+{
+       return (vma->vm_flags & VM_GROWSDOWN) &&
+               (vma->vm_start == addr) &&
+               !vma_stack_continue(vma->vm_prev, addr);
+}
+
 /**
  * __get_user_pages() - pin user pages in memory
  * @tsk:       task_struct of target task
@@ -1488,7 +1495,6 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                vma = find_extend_vma(mm, start);
                if (!vma && in_gate_area(mm, start)) {
                        unsigned long pg = start & PAGE_MASK;
-                       struct vm_area_struct *gate_vma = get_gate_vma(mm);
                        pgd_t *pgd;
                        pud_t *pud;
                        pmd_t *pmd;
@@ -1513,10 +1519,11 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                pte_unmap(pte);
                                return i ? : -EFAULT;
                        }
+                       vma = get_gate_vma(mm);
                        if (pages) {
                                struct page *page;
 
-                               page = vm_normal_page(gate_vma, start, *pte);
+                               page = vm_normal_page(vma, start, *pte);
                                if (!page) {
                                        if (!(gup_flags & FOLL_DUMP) &&
                                             is_zero_pfn(pte_pfn(*pte)))
@@ -1530,12 +1537,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                get_page(page);
                        }
                        pte_unmap(pte);
-                       if (vmas)
-                               vmas[i] = gate_vma;
-                       i++;
-                       start += PAGE_SIZE;
-                       nr_pages--;
-                       continue;
+                       goto next_page;
                }
 
                if (!vma ||
@@ -1549,6 +1551,13 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                        continue;
                }
 
+               /*
+                * If we don't actually want the page itself,
+                * and it's the stack guard page, just skip it.
+                */
+               if (!pages && stack_guard_page(vma, start))
+                       goto next_page;
+
                do {
                        struct page *page;
                        unsigned int foll_flags = gup_flags;
@@ -1631,6 +1640,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                flush_anon_page(vma, page, start);
                                flush_dcache_page(page);
                        }
+next_page:
                        if (vmas)
                                vmas[i] = vma;
                        i++;

diff --git a/mm/mlock.c b/mm/mlock.c
index 2689a08..6b55e3e 100644 (file)
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -135,13 +135,6 @@ void munlock_vma_page(struct page *page)
        }
 }
 
-static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr)
-{
-       return (vma->vm_flags & VM_GROWSDOWN) &&
-               (vma->vm_start == addr) &&
-               !vma_stack_continue(vma->vm_prev, addr);
-}
-
 /**
  * __mlock_vma_pages_range() -  mlock a range of pages in the vma.
  * @vma:   target vma
@@ -188,12 +181,6 @@ static long __mlock_vma_pages_range(struct vm_area_struct *vma,
        if (vma->vm_flags & VM_LOCKED)
                gup_flags |= FOLL_MLOCK;
 
-       /* We don't try to access the guard page of a stack vma */
-       if (stack_guard_page(vma, start)) {
-               addr += PAGE_SIZE;
-               nr_pages--;
-       }
-
        return __get_user_pages(current, mm, addr, nr_pages, gup_flags,
                                NULL, NULL, nonblocking);
 }