From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f65.google.com ([74.125.83.65]:42794 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968068AbeE2WRl (ORCPT ); Tue, 29 May 2018 18:17:41 -0400 Received: by mail-pg0-f65.google.com with SMTP id p9-v6so7180725pgc.9 for ; Tue, 29 May 2018 15:17:41 -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: Tue, 29 May 2018 16:17:26 -0600 Message-Id: <1527632247-23350-4-git-send-email-axboe@kernel.dk> In-Reply-To: <1527632247-23350-1-git-send-email-axboe@kernel.dk> References: <1527632247-23350-1-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