From patchwork Fri Jun 24 22:15:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Mahoney X-Patchwork-Id: 9198215 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E19ED6077D for ; Fri, 24 Jun 2016 22:16:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CB02C284D7 for ; Fri, 24 Jun 2016 22:16:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BEECD284DD; Fri, 24 Jun 2016 22:16:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 67697284D7 for ; Fri, 24 Jun 2016 22:16:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751665AbcFXWQR (ORCPT ); Fri, 24 Jun 2016 18:16:17 -0400 Received: from mx2.suse.de ([195.135.220.15]:37868 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751463AbcFXWPc (ORCPT ); Fri, 24 Jun 2016 18:15:32 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 32F9DAD32 for ; Fri, 24 Jun 2016 22:15:28 +0000 (UTC) Received: by starscream.home.jeffm.io (Postfix, from userid 1000) id 2994285033; Fri, 24 Jun 2016 18:15:25 -0400 (EDT) From: jeffm@suse.com To: linux-btrfs@vger.kernel.org Subject: [PATCH 20/31] btrfs: struct reada_control.root -> reada_control.fs_info Date: Fri, 24 Jun 2016 18:15:13 -0400 Message-Id: <1466806524-27508-21-git-send-email-jeffm@suse.com> X-Mailer: git-send-email 2.7.1 In-Reply-To: <1466806524-27508-1-git-send-email-jeffm@suse.com> References: <1466806524-27508-1-git-send-email-jeffm@suse.com> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jeff Mahoney The root is never used. We substitute extent_root in for the reada_find_extent call, since it's only ever used to obtain the node size. This call site will be changed to use fs_info in a later patch. Signed-off-by: Jeff Mahoney --- fs/btrfs/ctree.h | 2 +- fs/btrfs/reada.c | 13 +++++++------ 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 7063c55..784f003 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3581,7 +3581,7 @@ static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info) /* reada.c */ struct reada_control { - struct btrfs_root *root; /* tree to prefetch */ + struct btrfs_fs_info *fs_info; /* tree to prefetch */ struct btrfs_key key_start; struct btrfs_key key_end; /* exclusive */ atomic_t elems; diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 8428db7..4965d59 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -554,17 +554,18 @@ static void reada_control_release(struct kref *kref) static int reada_add_block(struct reada_control *rc, u64 logical, struct btrfs_key *top, u64 generation) { - struct btrfs_root *root = rc->root; + struct btrfs_fs_info *fs_info = rc->fs_info; struct reada_extent *re; struct reada_extctl *rec; - re = reada_find_extent(root, logical, top); /* takes one ref */ + /* takes one ref */ + re = reada_find_extent(fs_info->tree_root, logical, top); if (!re) return -1; rec = kzalloc(sizeof(*rec), GFP_KERNEL); if (!rec) { - reada_extent_put(root->fs_info, re); + reada_extent_put(fs_info, re); return -ENOMEM; } @@ -926,7 +927,7 @@ struct reada_control *btrfs_reada_add(struct btrfs_root *root, if (!rc) return ERR_PTR(-ENOMEM); - rc->root = root; + rc->fs_info = root->fs_info; rc->key_start = *key_start; rc->key_end = *key_end; atomic_set(&rc->elems, 0); @@ -954,7 +955,7 @@ struct reada_control *btrfs_reada_add(struct btrfs_root *root, int btrfs_reada_wait(void *handle) { struct reada_control *rc = handle; - struct btrfs_fs_info *fs_info = rc->root->fs_info; + struct btrfs_fs_info *fs_info = rc->fs_info; while (atomic_read(&rc->elems)) { if (!atomic_read(&fs_info->reada_works_cnt)) @@ -975,7 +976,7 @@ int btrfs_reada_wait(void *handle) int btrfs_reada_wait(void *handle) { struct reada_control *rc = handle; - struct btrfs_fs_info *fs_info = rc->root->fs_info; + struct btrfs_fs_info *fs_info = rc->fs_info; while (atomic_read(&rc->elems)) { if (!atomic_read(&fs_info->reada_works_cnt))