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 ACB291F93D for ; Fri, 21 Jul 2023 16:12:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D02BC433C8; Fri, 21 Jul 2023 16:12:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689955959; bh=p+ta6kh3doQDH2PjT9w1qzxfNh0BKZvFwXSVaHwHfLk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zZ8cTWZj/uHx2dh4/i8iVHSw3os7DrnZNf80b+YhDyMHNW46Uyjb49+q+X7mC5mQB nMmZY4pBGJu5HItxNxY3vXHHU5TT4ot5P2/TmOzyBz/8+NnOG4C5HIpz/iW5VlLJIH kzSC6Qinq6ePhhTHaTkSyK1LD2PkW8sj8YPAHsuI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xin Yin , Gao Xiang , Chao Yu , Sasha Levin Subject: [PATCH 6.4 091/292] erofs: fix fsdax unavailability for chunk-based regular files Date: Fri, 21 Jul 2023 18:03:20 +0200 Message-ID: <20230721160532.708073288@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230721160528.800311148@linuxfoundation.org> References: <20230721160528.800311148@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Xin Yin [ Upstream commit 18bddc5b67038722cb88fcf51fbf41a0277092cb ] DAX can be used to share page cache between VMs, reducing guest memory overhead. And chunk based data format is widely used for VM and container image. So enable dax support for it, make erofs better used for VM scenarios. Fixes: c5aa903a59db ("erofs: support reading chunk-based uncompressed files") Signed-off-by: Xin Yin Reviewed-by: Gao Xiang Reviewed-by: Chao Yu Link: https://lore.kernel.org/r/20230711062130.7860-1-yinxin.x@bytedance.com Signed-off-by: Gao Xiang Signed-off-by: Sasha Levin --- fs/erofs/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index d70b12b81507f..e12592727a546 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -183,7 +183,8 @@ static void *erofs_read_inode(struct erofs_buf *buf, inode->i_flags &= ~S_DAX; if (test_opt(&sbi->opt, DAX_ALWAYS) && S_ISREG(inode->i_mode) && - vi->datalayout == EROFS_INODE_FLAT_PLAIN) + (vi->datalayout == EROFS_INODE_FLAT_PLAIN || + vi->datalayout == EROFS_INODE_CHUNK_BASED)) inode->i_flags |= S_DAX; if (!nblks) -- 2.39.2