From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26A0FC433E0 for ; Tue, 9 Jun 2020 00:11:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 098372074B for ; Tue, 9 Jun 2020 00:11:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591661519; bh=MkhQdYmlwhdXAwRMV4INdW/RGVcDVH26f6kH/J+KPUo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=emrv0vAvTqUeblxQ8aBwzCFknVZaTX1cSskEY5aW8CVrQIsw4Vscf8x6Jm7lgUZ6b 6pjnGKEbApxcQ1Tfhce5wwr1qSQ1hQx4tTirSPhk7xbCOPAlp+BIFoQkDgFxibpYlr dVlpw4uczfCqfc3YX6ebGe1TmC7ZAPGaLxZIkhGo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387683AbgFIAL6 (ORCPT ); Mon, 8 Jun 2020 20:11:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:43020 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730080AbgFHXTu (ORCPT ); Mon, 8 Jun 2020 19:19:50 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C902E20899; Mon, 8 Jun 2020 23:19:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591658390; bh=MkhQdYmlwhdXAwRMV4INdW/RGVcDVH26f6kH/J+KPUo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iJ07D4TKpueQZ21+OYPz0Ek4jNOaUup5ox8YW0k+BJZs3nmcQs6rVH9nnUGctb/Dk sUyoWT/r/h6KpIGnbUuiv8mUzSzwGjT8oQ1KNb2/CH9n7LwXQyQ90trB3Jl5gxBey+ Lkd+U21AeZiabDNpuIwD5qZDm3iOrIGGDWeUqODQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Josef Bacik , Nikolay Borisov , David Sterba , Sasha Levin , linux-btrfs@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 048/175] btrfs: account for trans_block_rsv in may_commit_transaction Date: Mon, 8 Jun 2020 19:16:41 -0400 Message-Id: <20200608231848.3366970-48-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608231848.3366970-1-sashal@kernel.org> References: <20200608231848.3366970-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Josef Bacik [ Upstream commit bb4f58a747f0421b10645fbf75a6acc88da0de50 ] On ppc64le with 64k page size (respectively 64k block size) generic/320 was failing and debug output showed we were getting a premature ENOSPC with a bunch of space in btrfs_fs_info::trans_block_rsv. This meant there were still open transaction handles holding space, yet the flusher didn't commit the transaction because it deemed the freed space won't be enough to satisfy the current reserve ticket. Fix this by accounting for space in trans_block_rsv when deciding whether the current transaction should be committed or not. Reviewed-by: Nikolay Borisov Tested-by: Nikolay Borisov Signed-off-by: Josef Bacik Signed-off-by: David Sterba Signed-off-by: Sasha Levin --- fs/btrfs/space-info.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index e8a4b0ebe97f..5b47e3c44c8f 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -462,6 +462,7 @@ static int may_commit_transaction(struct btrfs_fs_info *fs_info, struct reserve_ticket *ticket = NULL; struct btrfs_block_rsv *delayed_rsv = &fs_info->delayed_block_rsv; struct btrfs_block_rsv *delayed_refs_rsv = &fs_info->delayed_refs_rsv; + struct btrfs_block_rsv *trans_rsv = &fs_info->trans_block_rsv; struct btrfs_trans_handle *trans; u64 bytes_needed; u64 reclaim_bytes = 0; @@ -524,6 +525,11 @@ static int may_commit_transaction(struct btrfs_fs_info *fs_info, spin_lock(&delayed_refs_rsv->lock); reclaim_bytes += delayed_refs_rsv->reserved; spin_unlock(&delayed_refs_rsv->lock); + + spin_lock(&trans_rsv->lock); + reclaim_bytes += trans_rsv->reserved; + spin_unlock(&trans_rsv->lock); + if (reclaim_bytes >= bytes_needed) goto commit; bytes_needed -= reclaim_bytes; -- 2.25.1