From patchwork Wed Apr 12 10:24:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 9677047 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 ABCB760325 for ; Wed, 12 Apr 2017 10:26:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9AD8B285E8 for ; Wed, 12 Apr 2017 10:26:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8D326285EA; Wed, 12 Apr 2017 10:26:16 +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=unavailable 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 5ED7D285E8 for ; Wed, 12 Apr 2017 10:26:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752852AbdDLK0O (ORCPT ); Wed, 12 Apr 2017 06:26:14 -0400 Received: from mx2.suse.de ([195.135.220.15]:40274 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752844AbdDLKZH (ORCPT ); Wed, 12 Apr 2017 06:25:07 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id BA21CAEBC; Wed, 12 Apr 2017 10:25:03 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id C58BE1E32BA; Wed, 12 Apr 2017 12:25:02 +0200 (CEST) From: Jan Kara To: Jens Axboe Cc: , , Jan Kara , Miklos Szeredi Subject: [PATCH 16/25] fuse: Convert to separately allocated bdi Date: Wed, 12 Apr 2017 12:24:40 +0200 Message-Id: <20170412102449.16901-17-jack@suse.cz> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20170412102449.16901-1-jack@suse.cz> References: <20170412102449.16901-1-jack@suse.cz> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Allocate struct backing_dev_info separately instead of embedding it inside the superblock. This unifies handling of bdi among users. CC: Miklos Szeredi CC: linux-fsdevel@vger.kernel.org Acked-by: Miklos Szeredi Reviewed-by: Christoph Hellwig Signed-off-by: Jan Kara --- fs/fuse/dev.c | 8 ++++---- fs/fuse/fuse_i.h | 3 --- fs/fuse/inode.c | 42 +++++++++++++----------------------------- 3 files changed, 17 insertions(+), 36 deletions(-) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index b681b43c766e..78887f68ee6a 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -383,8 +383,8 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req) if (fc->num_background == fc->congestion_threshold && fc->connected && fc->bdi_initialized) { - clear_bdi_congested(&fc->bdi, BLK_RW_SYNC); - clear_bdi_congested(&fc->bdi, BLK_RW_ASYNC); + clear_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC); + clear_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC); } fc->num_background--; fc->active_background--; @@ -575,8 +575,8 @@ void fuse_request_send_background_locked(struct fuse_conn *fc, fc->blocked = 1; if (fc->num_background == fc->congestion_threshold && fc->bdi_initialized) { - set_bdi_congested(&fc->bdi, BLK_RW_SYNC); - set_bdi_congested(&fc->bdi, BLK_RW_ASYNC); + set_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC); + set_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC); } list_add_tail(&req->list, &fc->bg_queue); flush_bg_queue(fc); diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 32ac2c9b09c0..0e7c79a390e0 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -631,9 +631,6 @@ struct fuse_conn { /** Negotiated minor version */ unsigned minor; - /** Backing dev info */ - struct backing_dev_info bdi; - /** Entry on the fuse_conn_list */ struct list_head entry; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 6fe6a88ecb4a..90bacbc87fb3 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -386,12 +386,6 @@ static void fuse_send_destroy(struct fuse_conn *fc) } } -static void fuse_bdi_destroy(struct fuse_conn *fc) -{ - if (fc->bdi_initialized) - bdi_destroy(&fc->bdi); -} - static void fuse_put_super(struct super_block *sb) { struct fuse_conn *fc = get_fuse_conn_super(sb); @@ -403,7 +397,6 @@ static void fuse_put_super(struct super_block *sb) list_del(&fc->entry); fuse_ctl_remove_conn(fc); mutex_unlock(&fuse_mutex); - fuse_bdi_destroy(fc); fuse_conn_put(fc); } @@ -928,7 +921,8 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) fc->no_flock = 1; } - fc->bdi.ra_pages = min(fc->bdi.ra_pages, ra_pages); + fc->sb->s_bdi->ra_pages = + min(fc->sb->s_bdi->ra_pages, ra_pages); fc->minor = arg->minor; fc->max_write = arg->minor < 5 ? 4096 : arg->max_write; fc->max_write = max_t(unsigned, 4096, fc->max_write); @@ -944,7 +938,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) arg->major = FUSE_KERNEL_VERSION; arg->minor = FUSE_KERNEL_MINOR_VERSION; - arg->max_readahead = fc->bdi.ra_pages * PAGE_SIZE; + arg->max_readahead = fc->sb->s_bdi->ra_pages * PAGE_SIZE; arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC | FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK | FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ | @@ -976,27 +970,20 @@ static void fuse_free_conn(struct fuse_conn *fc) static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb) { int err; + char *suffix = ""; - fc->bdi.name = "fuse"; - fc->bdi.ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_SIZE; - /* fuse does it's own writeback accounting */ - fc->bdi.capabilities = BDI_CAP_NO_ACCT_WB | BDI_CAP_STRICTLIMIT; - - err = bdi_init(&fc->bdi); + if (sb->s_bdev) + suffix = "-fuseblk"; + err = super_setup_bdi_name(sb, "%u:%u%s", MAJOR(fc->dev), + MINOR(fc->dev), suffix); if (err) return err; - fc->bdi_initialized = 1; - - if (sb->s_bdev) { - err = bdi_register(&fc->bdi, NULL, "%u:%u-fuseblk", - MAJOR(fc->dev), MINOR(fc->dev)); - } else { - err = bdi_register_dev(&fc->bdi, fc->dev); - } + sb->s_bdi->ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_SIZE; + /* fuse does it's own writeback accounting */ + sb->s_bdi->capabilities = BDI_CAP_NO_ACCT_WB | BDI_CAP_STRICTLIMIT; - if (err) - return err; + fc->bdi_initialized = 1; /* * For a single fuse filesystem use max 1% of dirty + @@ -1010,7 +997,7 @@ static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb) * * /sys/class/bdi//max_ratio */ - bdi_set_max_ratio(&fc->bdi, 1); + bdi_set_max_ratio(sb->s_bdi, 1); return 0; } @@ -1113,8 +1100,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) if (err) goto err_dev_free; - sb->s_bdi = &fc->bdi; - /* Handle umasking inside the fuse code */ if (sb->s_flags & MS_POSIXACL) fc->dont_mask = 1; @@ -1182,7 +1167,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) err_dev_free: fuse_dev_free(fud); err_put_conn: - fuse_bdi_destroy(fc); fuse_conn_put(fc); err_fput: fput(file);