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dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gnBv5F77" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECDB4C4CEF4; Wed, 23 Jul 2025 08:26:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753259203; bh=9F3qcFa7nxhCO6oCr83/3PirteKZEtY+uAO1GJkXWZo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gnBv5F77Mz4e0TUBNQOPEf9NHcNDjSFJYoXyQYGU8Ge/wPwCGqkwyum5XY+H1tc5B 2Mxg1StT8l/4ATTOL9HrSbPK9d8cVJn1MClIA/0T04r92kzyC+N9tQ4WPpJraYZTQk N6OvEF8H3eP3dhpgjsjkPxX2p2kcXAt3pec/9WJ6esAeA66Acle9h1gvje41AVnPCD yJ8yGUOzTA65WWnqgXRh0DezoVHOZyyEmZdaErViaBLSWi9cO8axrEvNPnYeWWj5QS 9mn2mbJL+MXvTNAE7q60zWop8dDbWRIon0KSLWFkd1QNtPGkyXKTIO0j6BG2EYJF2F KQvLzJIKuN5gQ== Date: Wed, 23 Jul 2025 09:26:39 +0100 From: Lee Jones To: Greg Kroah-Hartman Cc: Chao Yu , stable@vger.kernel.org, Sasha Levin , jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [STABLE 5.15+] f2fs: sysfs: add encoding_flags entry Message-ID: <20250723082639.GP11056@google.com> References: <20250416054805.1416834-1-chao@kernel.org> <20250624100039.GA3680448@google.com> <2025070253-erased-armadillo-0984@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <2025070253-erased-armadillo-0984@gregkh> On Wed, 02 Jul 2025, Greg Kroah-Hartman wrote: > On Tue, Jun 24, 2025 at 11:00:39AM +0100, Lee Jones wrote: > > On Wed, 16 Apr 2025, Chao Yu wrote: > > > > > This patch adds a new sysfs entry /sys/fs/f2fs//encoding_flags, > > > it is a read-only entry to show the value of sb.s_encoding_flags, the > > > value is hexadecimal. > > > > > > =========================== ========== > > > Flag_Name Flag_Value > > > =========================== ========== > > > SB_ENC_STRICT_MODE_FL 0x00000001 > > > SB_ENC_NO_COMPAT_FALLBACK_FL 0x00000002 > > > =========================== ========== > > > > > > case#1 > > > mkfs.f2fs -f -O casefold -C utf8:strict /dev/vda > > > mount /dev/vda /mnt/f2fs > > > cat /sys/fs/f2fs/vda/encoding_flags > > > 1 > > > > > > case#2 > > > mkfs.f2fs -f -O casefold -C utf8 /dev/vda > > > fsck.f2fs --nolinear-lookup=1 /dev/vda > > > mount /dev/vda /mnt/f2fs > > > cat /sys/fs/f2fs/vda/encoding_flags > > > 2 > > > > > > Signed-off-by: Chao Yu > > > --- > > > Documentation/ABI/testing/sysfs-fs-f2fs | 13 +++++++++++++ > > > fs/f2fs/sysfs.c | 9 +++++++++ > > > 2 files changed, 22 insertions(+) > > > > This patch, commit 617e0491abe4 ("f2fs: sysfs: export linear_lookup in > > features directory") upstream, needs to find its way into all Stable > > branches containing upstream commit 91b587ba79e1 ("f2fs: Introduce > > linear search for dentries"), which is essentially linux-5.15.y and > > newer. > > > > stable/linux-5.4.y: > > MISSING: f2fs: Introduce linear search for dentries > > MISSING: f2fs: sysfs: export linear_lookup in features directory > > > > stable/linux-5.10.y: > > MISSING: f2fs: Introduce linear search for dentries > > MISSING: f2fs: sysfs: export linear_lookup in features directory > > > > stable/linux-5.15.y: > > b0938ffd39ae f2fs: Introduce linear search for dentries [5.15.179] > > MISSING: f2fs: sysfs: export linear_lookup in features directory > > > > stable/linux-6.1.y: > > de605097eb17 f2fs: Introduce linear search for dentries [6.1.129] > > MISSING: f2fs: sysfs: export linear_lookup in features directory > > > > stable/linux-6.6.y: > > 0bf2adad03e1 f2fs: Introduce linear search for dentries [6.6.76] > > MISSING: f2fs: sysfs: export linear_lookup in features directory > > > > stable/linux-6.12.y: > > 00d1943fe46d f2fs: Introduce linear search for dentries [6.12.13] > > MISSING: f2fs: sysfs: export linear_lookup in features directory > > > > mainline: > > 91b587ba79e1 f2fs: Introduce linear search for dentries > > 617e0491abe4 f2fs: sysfs: export linear_lookup in features directory > > Great, then can someone submit these in a format we can apply them in? > or do clean cherry-picks work properly? Does this work: Please backport upstream commit: 617e0491abe4 f2fs: sysfs: export linear_lookup in features directory ... to all stable branches up to and including linux-5.15.y. If there are conflicts, I can do the backport myself and submit as patches. -- Lee Jones [李琼斯]