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Date: Mon, 19 Feb 2007 10:31:44 -0800 From: Adam Litke <agl@...ibm.com> To: linux-mm@...ck.org Cc: linux-kernel@...r.kernel.org, agl@...ibm.com Subject: [PATCH 2/7] copy_vma for hugetlbfs Signed-off-by: Adam Litke <agl@...ibm.com> --- fs/hugetlbfs/inode.c | 6 ++++++ mm/memory.c | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 4f4cd13..c0a7984 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -36,6 +36,7 @@ static struct super_operations hugetlbfs_ops; static const struct address_space_operations hugetlbfs_aops; const struct file_operations hugetlbfs_file_operations; +static struct pagetable_operations_struct hugetlbfs_pagetable_ops; static struct inode_operations hugetlbfs_dir_inode_operations; static struct inode_operations hugetlbfs_inode_operations; @@ -70,6 +71,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma) */ vma->vm_flags |= VM_HUGETLB | VM_RESERVED; vma->vm_ops = &hugetlb_vm_ops; + vma->pagetable_ops = &hugetlbfs_pagetable_ops; vma_len = (loff_t)(vma->vm_end - vma->vm_start); @@ -560,6 +562,10 @@ const struct file_operations hugetlbfs_file_operations = { .get_unmapped_area = hugetlb_get_unmapped_area, }; +static struct pagetable_operations_struct hugetlbfs_pagetable_ops = { + .copy_vma = copy_hugetlb_page_range, +}; + static struct inode_operations hugetlbfs_dir_inode_operations = { .create = hugetlbfs_create, .lookup = simple_lookup, diff --git a/mm/memory.c b/mm/memory.c index ef09f0a..80eafd5 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -602,8 +602,8 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, return 0; } - if (is_vm_hugetlb_page(vma)) - return copy_hugetlb_page_range(dst_mm, src_mm, vma); + if (has_pt_op(vma, copy_vma)) + return pt_op(vma, copy_vma)(dst_mm, src_mm, vma); dst_pgd = pgd_offset(dst_mm, addr); src_pgd = pgd_offset(src_mm, addr); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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