From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx192.postini.com [74.125.245.192]) by kanga.kvack.org (Postfix) with SMTP id B50BC6B009B for ; Tue, 14 May 2013 12:38:04 -0400 (EDT) From: Lukas Czerner Subject: [PATCH v4 08/20] gfs2: use ->invalidatepage() length argument Date: Tue, 14 May 2013 18:37:22 +0200 Message-Id: <1368549454-8930-9-git-send-email-lczerner@redhat.com> In-Reply-To: <1368549454-8930-1-git-send-email-lczerner@redhat.com> References: <1368549454-8930-1-git-send-email-lczerner@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, akpm@linux-foundation.org, hughd@google.com, lczerner@redhat.com, cluster-devel@redhat.com ->invalidatepage() aop now accepts range to invalidate so we can make use of it in gfs2_invalidatepage(). Signed-off-by: Lukas Czerner Acked-by: Steven Whitehouse 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 37093ba..ea920bf 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -947,24 +947,29 @@ 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); } -- 1.7.7.6 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org