From mboxrd@z Thu Jan 1 00:00:00 1970 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 399EA2F3602; Tue, 4 Nov 2025 12:12:42 +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=1762258363; cv=none; b=NICuHrfOo53fIyz0vP4Ol1au7nvY2NyS63jifJ/LMcwqXCWu6z/nhjYlMYxgKdS0M6vhiY378djomFhmO3kkSal0m+6+DJCKe9OPpm2GGws/dUBDO4JXyeI4IF7rjv8qU4h1L9ISLJe4hq3kfo9WiHeWjg87lh5+rcF833mZiw4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762258363; c=relaxed/simple; bh=ODAaCXkHU96saMrMeqt2w1kbggvsUdeDZpfzfo/cED0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=pc2mZ6IBd2Ruz6X/+6sTNTFKtiICs3CY1zSd6R7zP+uPObpibeHXUI3SYUc0DjOHo4SeLZQmP3pM5rker4dMj4cKQHdzpIoExNB47NkLPHhTcujiHQamuMFFNaEdeaJQWAldSwR347owpCxf7fwQ3fWVLGhEtUhXKvoD7uVXqzY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NCScDT/s; 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="NCScDT/s" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DD27C16AAE; Tue, 4 Nov 2025 12:12:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762258362; bh=ODAaCXkHU96saMrMeqt2w1kbggvsUdeDZpfzfo/cED0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=NCScDT/skDBPqTG/KJujrRIGMNVi6vaXwks6DLj+tZ7PEwDO6lk5bXDlRiosUtuWq GkU5HDdzMu24jR2JbvRgB09ORukJ4/42rXwdPKQh4FBIhXZWUvjanRNkK/vP6Ru2Hn 1FM+k8cvLKsGFIwRNHcX08yFvpiUPMS6yct9+JyCdpfkF++WW/Jd2dxNcN7D0F2Vc3 IcZuAI6pCzX/eiNQ/wAmxIiRECPnzFIpyhO1gOR1eED3+3MLgrnO/2PT4LE2LFRuKI thgPS0v1hMBqGJa8iEsRJS3k/PLAF19ytc0et/OS4egQe5CRcsAZ4xsYLvkdgeFufj spSfr0gsDoDXg== From: Christian Brauner Date: Tue, 04 Nov 2025 13:12:31 +0100 Subject: [PATCH RFC 2/8] btrfs: use super write guard in btrfs_reclaim_bgs_work() Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251104-work-guards-v1-2-5108ac78a171@kernel.org> References: <20251104-work-guards-v1-0-5108ac78a171@kernel.org> In-Reply-To: <20251104-work-guards-v1-0-5108ac78a171@kernel.org> To: linux-fsdevel@vger.kernel.org Cc: Alexander Viro , Jan Kara , linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, Christian Brauner X-Mailer: b4 0.15-dev-a6db3 X-Developer-Signature: v=1; a=openpgp-sha256; l=919; i=brauner@kernel.org; h=from:subject:message-id; bh=ODAaCXkHU96saMrMeqt2w1kbggvsUdeDZpfzfo/cED0=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWRyvt3itK76UeyEr0V37N9Yv9ta/JnLelaO8I53ib2Hd njLGM272VHKwiDGxSArpsji0G4SLrecp2KzUaYGzBxWJpAhDFycAjCRFRyMDDN/Pdz8rtB5n1no drbyC5qrLI/4t36wa+1J/xkmaaobac/IsPRg4vlaT3WtWUuu1uRPi2SW/fi49PXsT91nbqfP0N2 mxAgA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Signed-off-by: Christian Brauner --- fs/btrfs/block-group.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index 5322ef2ae015..8284b9435758 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -1850,7 +1850,7 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) if (!btrfs_should_reclaim(fs_info)) return; - sb_start_write(fs_info->sb); + guard(super_write)(fs_info->sb); if (!btrfs_exclop_start(fs_info, BTRFS_EXCLOP_BALANCE)) { sb_end_write(fs_info->sb); @@ -2030,7 +2030,6 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) list_splice_tail(&retry_list, &fs_info->reclaim_bgs); spin_unlock(&fs_info->unused_bgs_lock); btrfs_exclop_finish(fs_info); - sb_end_write(fs_info->sb); } void btrfs_reclaim_bgs(struct btrfs_fs_info *fs_info) -- 2.47.3