From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A7834DF6C for ; Sat, 8 Aug 2026 15:48:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786204136; cv=none; b=ABLvloGzTXDfXHdrnswFJ+PggxXerVCQGSz6tL5dg2IY2KG6IKk0hYZzgj64gDrd85+tn43iUS6EqqsG3Kn80/vYxI1cSQpGVBfIvces8i4C7+Qa75QBn3ySTLQc+ClgvVSQ16qvM82ZONcjlBdkXualC+GVuWxPQq62OaQtUcE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786204136; c=relaxed/simple; bh=FDbw3OFrdAvlezkDoUJkDlamDnEw78FJu9KE1TW+YFc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rMEZpKJZ29eczTpH49EQS1TI748OLC72fUyQYpVEUJbVjUlRoiLp1HgdVnYefUfJSKmnqMh+CH+bNQwOmANXyIoaEgMC+Ksgk7OWlpu7h7RJ7SMigUPr9t/XtrjZn2dozM7wGEf8NWzLK/vxqKdAOprbrDMw7x9lIO9ANrMPjX8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XIaSvsr8; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XIaSvsr8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11C021F00A3A; Sat, 8 Aug 2026 15:48:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786204135; bh=EVhKFlYCdpCwMkhpE8jpfnq9Zpt8pUm25yZCnNVvNpE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=XIaSvsr87RM9k7ftxO3WZJSgjVESUaSUnjtgVPFPB6IFghn30vsALSwPhw6JQXRpJ zNo/hXdqamFMMeiifRCKz6LyGnIDF9+eDjzDYOn/WBXoW9kY3sW5tMVib0GT/Uro9i 54R0cBMaNL8H8NFXtZKMG0NfmKx/xGOnDrCBMukXz52oLcEb1tI6KLRrAeAX+hFkno JYmDrRD7SAV0Y6BpUICg0RI+yr8ZgIm52YXytM6oHrs5H+lqIgA4hYVR4j3FZawe6p kTvxXTBWdvFXJdn8hknaTrnvVZPFzkfyJvrT5dBqZYWRC3ZFnyA1ufB02AcsVzHIWM nyWSyd44aWbdA== From: Sasha Levin To: stable@vger.kernel.org Cc: Christian Brauner , Jan Kara , Sasha Levin Subject: [PATCH 6.12.y 2/6] super: skip dying superblocks early Date: Sat, 8 Aug 2026 11:48:48 -0400 Message-ID: <20260808154852.370323-2-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260808154852.370323-1-sashal@kernel.org> References: <2026072927-mom-flyover-909f@gregkh> <20260808154852.370323-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Christian Brauner [ Upstream commit 6920e3388ba4c66b0468d43bb7a373f5fff15d35 ] Make all iterators uniform by performing an early check whether the superblock is dying. Link: https://lore.kernel.org/r/20250329-work-freeze-v2-3-a47af37ecc3d@kernel.org Reviewed-by: Jan Kara Signed-off-by: Christian Brauner Stable-dep-of: 749d7aa0377a ("super: fix emergency thaw deadlock on frozen block devices") Signed-off-by: Sasha Levin --- fs/super.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/super.c b/fs/super.c index 5aabfcab4fc7d..f1714752e439b 100644 --- a/fs/super.c +++ b/fs/super.c @@ -925,6 +925,9 @@ void iterate_supers(void (*f)(struct super_block *, void *), void *arg) list_for_each_entry(sb, &super_blocks, s_list) { bool locked; + if (super_flags(sb, SB_DYING)) + continue; + sb->s_count++; spin_unlock(&sb_lock); @@ -962,6 +965,9 @@ void iterate_supers_type(struct file_system_type *type, hlist_for_each_entry(sb, &type->fs_supers, s_instances) { bool locked; + if (super_flags(sb, SB_DYING)) + continue; + sb->s_count++; spin_unlock(&sb_lock); -- 2.53.0