Hi,
Acked-by: Steven Whitehouse <swhit...@redhat.com>
Steve.
On Tue, 2013-02-05 at 10:12 +0100, Lukas Czerner wrote:
> ->invalidatepage() aop now accepts range to invalidate so we can make
> use of it in gfs2_invalidatepage().
>
> Signed-off-by: Lukas Czerner <lczer...@redhat.com>
> Cc: cluster-devel@redhat.com
> ---
> fs/gfs2/aops.c | 9 +++++++--
> 1 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
> index 5bd558c..3cf3dc8 100644
> --- a/fs/gfs2/aops.c
> +++ b/fs/gfs2/aops.c
> @@ -949,24 +949,29 @@ static void gfs2_invalidatepage(struct page *page,
> unsigned int offset,
> unsigned int length)
> {
> struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host);
> + unsigned int stop = offset + length;
> + int partial_page = (offset || length < PAGE_CACHE_SIZE);
> struct buffer_head *bh, *head;
> unsigned long pos = 0;
>
> BUG_ON(!PageLocked(page));
> - if (offset == 0)
> + if (!partial_page)
> ClearPageChecked(page);
> if (!page_has_buffers(page))
> goto out;
>
> bh = head = page_buffers(page);
> do {
> + if (pos + bh->b_size > stop)
> + return;
> +
> if (offset <= pos)
> gfs2_discard(sdp, bh);
> pos += bh->b_size;
> bh = bh->b_this_page;
> } while (bh != head);
> out:
> - if (offset == 0)
> + if (!partial_page)
> try_to_release_page(page, 0);
> }
>
