From patchwork Thu Oct 17 18:52:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13840628 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0F882194A9 for ; Thu, 17 Oct 2024 18:52:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729191140; cv=none; b=IB1g9Lw7vUO7/UA5wpgguDWn0RZ/iND/Gfefzw8vHgqLkfSbtyvG+QpGe7qBK7+d8Uchz7jKLBcdnBMEuKCGF02xroZkxfeZCp/KdWxiTwyOhkeew3sEVBDoxdgPzNlJVgJzeyiPZyBYFLvCPQCGWOhY2RBtPz87yRc92Ib9X2g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729191140; c=relaxed/simple; bh=c6SpfCov8L841eto8mrDZDR6uimoB6fGKncbmclUGo8=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=mEFEDoTf/6XmynVPOsGhhvN3AE6vf5vXQBi3zQkzfVRuas74VZFmz0RtbIymvn31raeR9MB+MPkHVFmeesy/PcjTcT/ZBGWDFnsnYn/rNWKFYebLlNV9Wt2F0t+rzpbQvq6fuLDQQ7ehIyk/QEkJupllsAasbLt1aPCCg2vMRgg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pQtlODSx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pQtlODSx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 891E4C4CEC3; Thu, 17 Oct 2024 18:52:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729191140; bh=c6SpfCov8L841eto8mrDZDR6uimoB6fGKncbmclUGo8=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=pQtlODSxpNUvW0BpiW8ySmW4cBO6p+TvG/CxQ1+bx17eMkkdTTk6p9kDoraVSi9I9 8ILjkplfUYwGSwMio2JhfWJqMNE+4omNdKTC6mLoSb3GASz5FDJQ3nVhF1XK5OuPpd e9nrwtKLaFS9e5mkKocTAvKcIDFJfgeSydcM8zLwx6XMS8YSknrzcn15eA3TvvchMv 82WxWuIgJDX5hzV+HoKMmSKmaPyoBUVj1fmRKXV8nYyqDvrmVcnjGp4FV8Hbqok851 zdRCvo5GYubOX7hUVOjAF2bUGP6PRBPEL28/m06BQ9Q3M9Ntq8osJ5ARr6ZrpCXvoq ylxDZOTtZZqyw== Date: Thu, 17 Oct 2024 11:52:20 -0700 Subject: [PATCH 03/16] xfs: add a xfs_group_next_range helper From: "Darrick J. Wong" To: djwong@kernel.org Cc: linux-xfs@vger.kernel.org, hch@lst.de Message-ID: <172919068724.3450737.17839132713666037909.stgit@frogsfrogsfrogs> In-Reply-To: <172919068618.3450737.15265130869882039127.stgit@frogsfrogsfrogs> References: <172919068618.3450737.15265130869882039127.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Christoph Hellwig Add a helper to iterate over iterate over all groups, which can be used as a simple while loop: struct xfs_group *xg = NULL; while ((xg = xfs_group_next_range(mp, xg, 0, MAX_GROUP))) { ... } This will be wrapped by the realtime group code first, and eventually replace the for_each_rtgroup_from and for_each_rtgroup_range helpers. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_group.c | 26 ++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_group.h | 3 +++ 2 files changed, 29 insertions(+) diff --git a/fs/xfs/libxfs/xfs_group.c b/fs/xfs/libxfs/xfs_group.c index edf5907845f003..59e08cfaf9bffd 100644 --- a/fs/xfs/libxfs/xfs_group.c +++ b/fs/xfs/libxfs/xfs_group.c @@ -87,6 +87,32 @@ xfs_group_grab( return xg; } +/* + * Iterate to the next group. To start the iteration at @start_index, a %NULL + * @xg is passed, else the previous group returned from this function. The + * caller should break out of the loop when this returns %NULL. If the caller + * wants to break out of a loop that did not finish it needs to release the + * active reference to @xg using xfs_group_rele() itself. + */ +struct xfs_group * +xfs_group_next_range( + struct xfs_mount *mp, + struct xfs_group *xg, + uint32_t start_index, + uint32_t end_index, + enum xfs_group_type type) +{ + uint32_t index = start_index; + + if (xg) { + index = xg->xg_gno + 1; + xfs_group_rele(xg); + } + if (index > end_index) + return NULL; + return xfs_group_grab(mp, index, type); +} + /* * Find the next group after @xg, or the first group if @xg is NULL. */ diff --git a/fs/xfs/libxfs/xfs_group.h b/fs/xfs/libxfs/xfs_group.h index e3b6be7ff9e802..dd7da90443054b 100644 --- a/fs/xfs/libxfs/xfs_group.h +++ b/fs/xfs/libxfs/xfs_group.h @@ -20,6 +20,9 @@ void xfs_group_put(struct xfs_group *xg); struct xfs_group *xfs_group_grab(struct xfs_mount *mp, uint32_t index, enum xfs_group_type type); +struct xfs_group *xfs_group_next_range(struct xfs_mount *mp, + struct xfs_group *xg, uint32_t start_index, uint32_t end_index, + enum xfs_group_type type); struct xfs_group *xfs_group_grab_next_mark(struct xfs_mount *mp, struct xfs_group *xg, xa_mark_t mark, enum xfs_group_type type); void xfs_group_rele(struct xfs_group *xg);