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    SubjectRe: [rfc][patch 3/3] xfs: use new vmap API
    Looks good to me.

    Nick Piggin wrote:
    > Implement XFS's large buffer support with the new vmap APIs. See the vmap
    > rewrite patch for some numbers.
    >
    > Signed-off-by: Nick Piggin <npiggin@suse.de>
    > ---
    >
    > Index: linux-2.6/fs/xfs/linux-2.6/xfs_buf.c
    > ===================================================================
    > --- linux-2.6.orig/fs/xfs/linux-2.6/xfs_buf.c
    > +++ linux-2.6/fs/xfs/linux-2.6/xfs_buf.c
    > @@ -265,7 +265,7 @@ xfs_buf_free(
    > uint i;
    >
    > if ((bp->b_flags & XBF_MAPPED) && (bp->b_page_count > 1))
    > - vunmap(bp->b_addr - bp->b_offset);
    > + vm_unmap_ram(bp->b_addr - bp->b_offset, bp->b_page_count);
    >
    > for (i = 0; i < bp->b_page_count; i++) {
    > struct page *page = bp->b_pages[i];
    > @@ -387,8 +387,8 @@ _xfs_buf_map_pages(
    > bp->b_addr = page_address(bp->b_pages[0]) + bp->b_offset;
    > bp->b_flags |= XBF_MAPPED;
    > } else if (flags & XBF_MAPPED) {
    > - bp->b_addr = vmap(bp->b_pages, bp->b_page_count,
    > - VM_MAP, PAGE_KERNEL);
    > + bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count,
    > + -1, PAGE_KERNEL);
    > if (unlikely(bp->b_addr == NULL))
    > return -ENOMEM;
    > bp->b_addr += bp->b_offset;
    >
    >
    >


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