From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 67583175A6D for ; Thu, 27 Aug 2026 06:56:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787813761; cv=none; b=ui0C1GgP1NatRXBiyizyBAQS3jOwUrkjva357R0q/apfHFBE61IDWhz8q8pNjLKftOJd3YbArhLyN7PNw8n8ZYTHtKZBRHNtnyBHJtWCSYDGqS9eDfJxTF47mjclLgFRHGvwtMQGVdUoChgfVgpW4nmd1dhztAM6+WCmouUEwds= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787813761; c=relaxed/simple; bh=eLWYcrH8h9a+an1KvimoGhX6nQOHZIc5EVJ/sSlRAHk=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=F84U5k6TvpXnlfGR2xTrLYtm4GY4xqJ12djD8KAIH7iNWXcBLGbPrITDt/VTYHuKFd3vGDMy/ue72W/awzYGTD1kDJBjWD1dhbUZdYF7waABaJtnLzUoMAHl997rqERpUjl5dwtLs1rRSnI5wHb7hEcCo5aupLRwVQj6kYZD5Zc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=b35I264U; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=aetZwxn5; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="b35I264U"; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="aetZwxn5" Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 3535E21223 for ; Thu, 27 Aug 2026 06:55:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1787813754; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=VSny1jfJb5FEDR6RnXOAFBbm2E4OjJtv7qSA0FDisBQ=; b=b35I264Uvxh+L1rQvxd3fPuW/SdE9x8Qb8NLuge6S9qL5JNqtgugVWwbNi6FU/wwccOj0C MnNbOZzjRl+U2Xxt1qc3D6nH7c4XAETR8kMBIggSWzaDxyb7QsoCt87W/qEmrKHcr7Yn5V FI59n7OqgAIiyxMaJjpL4x93gFTQbfY= Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1787813750; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=VSny1jfJb5FEDR6RnXOAFBbm2E4OjJtv7qSA0FDisBQ=; b=aetZwxn584rQi7iCWq6r9IduUzoH5/+mJ9kJJc86MZ0XCgG9wBqmMtE/jKFfWSLlUExgV2 UUZO3ootpiiNOJEAN7/6kCSGTc7Nt/sfvR5+LLNmm0bm7s0P/jVQzdIO0bA7AdWZL/fGYX aZI4TWL0LnhUib4z3LA4bz1Ij4W94hI= Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 32E1113354 for ; Thu, 27 Aug 2026 06:55:48 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id GWxDNHTfj2oiXgAAD6G6ig (envelope-from ) for ; Thu, 27 Aug 2026 06:55:48 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 0/2] btrfs: qgroup: mark qgroup inconsistent for more Date: Thu, 27 Aug 2026 16:25:28 +0930 Message-ID: X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.996]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; PREVIOUSLY_DELIVERED(0.00)[linux-btrfs@vger.kernel.org]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid,imap1.dmz-prg2.suse.org:helo]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Score: -2.80 X-Spam-Level: Commit 011b46c30476 ("btrfs: skip subtree scan if it's too high to avoid low stall in btrfs_commit_transaction()") covers the most common case that can cause a long qgroup stall, where a large subtree is rescanned when dropping a snapshot. But there are more corner cases for the same long qgroup stall: - A qgroup rescan is queued immediately after marking inconsistent The new rescan will immediately revert the NO_ACCOUNTING flag, thus still results long qgroup stalls. - A subvolume with no shared subtree This can still queue a lot of workload into the current transaction. This series covers both less-common cases. Qu Wenruo (2): btrfs: reject new qgroup rescan during subvolume dropping btrfs: avoid long stall when dropping a non-shared large subvolume fs/btrfs/disk-io.c | 4 ++++ fs/btrfs/extent-tree.c | 11 +++++++++++ fs/btrfs/qgroup.c | 29 ++++++++++++++++++++++++++++- fs/btrfs/qgroup.h | 15 +++++++++++++++ 4 files changed, 58 insertions(+), 1 deletion(-) -- 2.55.0