From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out30-98.freemail.mail.aliyun.com (out30-98.freemail.mail.aliyun.com [115.124.30.98]) (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 E9619368957; Tue, 1 Sep 2026 06:22:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.98 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788243770; cv=none; b=KO4B6TqU+WD2DmEvNOnVIazJWioYW/2SALXWrjLdCQk746WQvDOcD7xCUByfAp9+BSHXZi0ydh0WHMaJJXPiz9xs3YGdqk1AxNmozF1BIYtkCj94Z15egnTHwEGp+ftMlkew0El+7XZ6r22OQA7rUWlgvCs7PSlLOcyGYOBDieM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788243770; c=relaxed/simple; bh=TwmW2Y3hTNJs+JeC5UXsySBHOgKd1pXNR1ljskMkGvk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=lBLe0QeyxvYF34qgiWn5+StZsRxMKxWhJb5wK92jwZPCRMm2PaKzStvLAC7AOEMX/PZkneD6t9ZTYs+SAHEVrdEhdBI65BVNyyfqCAXHpBrpsvJkGLgX3zcN32UvpSj33+xwLJCh2+ok0Zo1SMhleExw7EXuFUzj4sKAE548quw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=xVgwMakd; arc=none smtp.client-ip=115.124.30.98 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="xVgwMakd" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1788243764; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=45ozspufcHZUV7IFzNQg9IRvWuMvisXbo+FeNLjLT5g=; b=xVgwMakde3XnKRKPNR0IPofuA/Hyet6cop64rDUTNoxqE38exN0cKsZ2p2m7pn8F7E7CqWZE8hcTd7aVL9zHnXINkesqCrss2Hh6cPCvn1YMv647R3gmFgPZut0BLWcTkIjJPNmtq2WarPsHpWCEsQIJCXBX1ptg+DzYjsPEza8= X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R241e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045133197;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=5;SR=0;TI=SMTPD_---0XA3vWPg_1788243763; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0XA3vWPg_1788243763 cluster:ay36) by smtp.aliyun-inc.com; Tue, 01 Sep 2026 14:22:44 +0800 From: Jingbo Xu To: xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH v2] erofs: add sysfs feature entry for xattr prefixes Date: Tue, 1 Sep 2026 14:22:43 +0800 Message-Id: <20260901062243.109172-1-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.19.1.6.gb485710b Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Let /sys/fs/erofs/features/xattr_prefixes advertise that this kernel supports the EROFS_FEATURE_INCOMPAT_XATTR_PREFIXES on-disk format. Fixes: 6a318ccd7e08 ("erofs: enable long extended attribute name prefixes") Cc: # 6.4+ Signed-off-by: Jingbo Xu --- changes since v1: - add Fixes tag and versioned Cc-stable tag --- fs/erofs/sysfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/erofs/sysfs.c b/fs/erofs/sysfs.c index 6734483a440f..dfcec9376cd5 100644 --- a/fs/erofs/sysfs.c +++ b/fs/erofs/sysfs.c @@ -95,6 +95,7 @@ EROFS_ATTR_FEATURE(sb_chksum); EROFS_ATTR_FEATURE(ztailpacking); EROFS_ATTR_FEATURE(fragments); EROFS_ATTR_FEATURE(dedupe); +EROFS_ATTR_FEATURE(xattr_prefixes); EROFS_ATTR_FEATURE(48bit); EROFS_ATTR_FEATURE(metabox); @@ -108,6 +109,7 @@ static struct attribute *erofs_feat_attrs[] = { ATTR_LIST(ztailpacking), ATTR_LIST(fragments), ATTR_LIST(dedupe), + ATTR_LIST(xattr_prefixes), ATTR_LIST(48bit), ATTR_LIST(metabox), NULL, -- 2.19.1.6.gb485710b