From patchwork Tue Feb 5 09:12:01 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v2,08/18] gfs2: use ->invalidatepage() length argument From: Lukas Czerner X-Patchwork-Id: 218189 Message-Id: <1360055531-26309-9-git-send-email-lczerner@redhat.com> To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, Lukas Czerner , cluster-devel@redhat.com Date: Tue, 5 Feb 2013 10:12:01 +0100 ->invalidatepage() aop now accepts range to invalidate so we can make use of it in gfs2_invalidatepage(). Signed-off-by: Lukas Czerner Cc: cluster-devel@redhat.com Acked-by: Steven Whitehouse --- 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); }