From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f66.google.com ([209.85.214.66]:38468 "EHLO mail-it0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751544AbeE3OmV (ORCPT ); Wed, 30 May 2018 10:42:21 -0400 Received: by mail-it0-f66.google.com with SMTP id q4-v6so23741215ite.3 for ; Wed, 30 May 2018 07:42:20 -0700 (PDT) From: Jens Axboe To: linux-fsdevel@vger.kernel.org Cc: viro@zeniv.linux.org.uk, akpm@linux-foundation.org, Jens Axboe Subject: [PATCH 3/4] btrfs: readpages() should submit IO as read-ahead Date: Wed, 30 May 2018 08:42:08 -0600 Message-Id: <1527691329-2371-4-git-send-email-axboe@kernel.dk> In-Reply-To: <1527691329-2371-1-git-send-email-axboe@kernel.dk> References: <1527691329-2371-1-git-send-email-axboe@kernel.dk> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: a_ops->readpages() is only ever used for read-ahead. Ensure that we pass this information down to the block layer. Signed-off-by: Jens Axboe --- fs/btrfs/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index e99b329002cf..32034bc1e2b9 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3119,7 +3119,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree, for (index = 0; index < nr_pages; index++) { __do_readpage(tree, pages[index], btrfs_get_extent, em_cached, - bio, 0, bio_flags, 0, prev_em_start); + bio, 0, bio_flags, REQ_RAHEAD, prev_em_start); put_page(pages[index]); } } -- 2.7.4