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| author | Paul Mundt <lethal@linux-sh.org> | 2010-11-24 16:21:08 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-11-24 16:21:08 +0900 |
| commit | 540565257101f7c52b6fc5a57651f7505f8d20fe (patch) | |
| tree | 7adee0bc65a02fead0dd9cae4f2d4632b227ac56 /drivers/xen/xenfs/privcmd.c | |
| parent | 4d048435e9864998f6a6ad16422393d42322716d (diff) | |
| parent | 421b446abeec55bed1251fab80cb5c12be58b773 (diff) | |
| download | linux-540565257101f7c52b6fc5a57651f7505f8d20fe.tar.bz2 | |
Merge branch 'rmobile/fsi-despair' into rmobile-fixes-for-linus
Diffstat (limited to 'drivers/xen/xenfs/privcmd.c')
| -rw-r--r-- | drivers/xen/xenfs/privcmd.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/xen/xenfs/privcmd.c b/drivers/xen/xenfs/privcmd.c index 0f5d4162b22d..dbd3b16fd131 100644 --- a/drivers/xen/xenfs/privcmd.c +++ b/drivers/xen/xenfs/privcmd.c @@ -265,9 +265,7 @@ static int mmap_return_errors(void *data, void *state) xen_pfn_t *mfnp = data; struct mmap_batch_state *st = state; - put_user(*mfnp, st->user++); - - return 0; + return put_user(*mfnp, st->user++); } static struct vm_operations_struct privcmd_vm_ops; @@ -322,10 +320,8 @@ static long privcmd_ioctl_mmap_batch(void __user *udata) up_write(&mm->mmap_sem); if (state.err > 0) { - ret = 0; - state.user = m.arr; - traverse_pages(m.num, sizeof(xen_pfn_t), + ret = traverse_pages(m.num, sizeof(xen_pfn_t), &pagelist, mmap_return_errors, &state); } @@ -383,8 +379,9 @@ static int privcmd_mmap(struct file *file, struct vm_area_struct *vma) if (xen_feature(XENFEAT_auto_translated_physmap)) return -ENOSYS; - /* DONTCOPY is essential for Xen as copy_page_range is broken. */ - vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY; + /* DONTCOPY is essential for Xen because copy_page_range doesn't know + * how to recreate these mappings */ + vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY | VM_PFNMAP; vma->vm_ops = &privcmd_vm_ops; vma->vm_private_data = NULL; |