Message ID | 20230522135018.2742245-27-dhowells@redhat.com |
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State | New |
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[2620:137:e000::1:20]) by mx.google.com with ESMTP id d186-20020a6336c3000000b0052c830b3069si2584577pga.461.2023.05.22.07.07.06; Mon, 22 May 2023 07:07:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=LRyYCHUy; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233880AbjEVNzp (ORCPT <rfc822;wlfightup@gmail.com> + 99 others); Mon, 22 May 2023 09:55:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233879AbjEVNzK (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Mon, 22 May 2023 09:55:10 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1DDC6F9 for <linux-kernel@vger.kernel.org>; Mon, 22 May 2023 06:52:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1684763529; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HfMcLqK7SdZvPGZvy5b2RGzipVUrB/qFQK+4kiqdRos=; b=LRyYCHUyCquNmb69NdXW+xC4OC4Hhwf2Oa0J9O+9SR28Y4mPhunlTwVWBkTsCUYuwZXnvy YJ47Yz7rIJgGTwIGisHP0U7qYIIyTgTcUvn7+0e6i42+fJQaEwCIu73o/kxnJYmz0TL2jX VRsGIAmEY3G6z/u2j8aZxQsAQlY5H+s= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-652-P98tTMU2PTmMkmG9xXy80A-1; Mon, 22 May 2023 09:52:08 -0400 X-MC-Unique: P98tTMU2PTmMkmG9xXy80A-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E8E383C0BE2D; Mon, 22 May 2023 13:52:06 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.39.192.68]) by smtp.corp.redhat.com (Postfix) with ESMTP id 13CC640C6CD6; Mon, 22 May 2023 13:52:03 +0000 (UTC) From: David Howells <dhowells@redhat.com> To: Jens Axboe <axboe@kernel.dk>, Al Viro <viro@zeniv.linux.org.uk>, Christoph Hellwig <hch@infradead.org> Cc: David Howells <dhowells@redhat.com>, Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>, Jeff Layton <jlayton@kernel.org>, David Hildenbrand <david@redhat.com>, Jason Gunthorpe <jgg@nvidia.com>, Logan Gunthorpe <logang@deltatee.com>, Hillf Danton <hdanton@sina.com>, Christian Brauner <brauner@kernel.org>, Linus Torvalds <torvalds@linux-foundation.org>, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig <hch@lst.de>, Steven Rostedt <rostedt@goodmis.org>, Masami Hiramatsu <mhiramat@kernel.org>, linux-trace-kernel@vger.kernel.org Subject: [PATCH v22 26/31] trace: Convert trace/seq to use copy_splice_read() Date: Mon, 22 May 2023 14:50:13 +0100 Message-Id: <20230522135018.2742245-27-dhowells@redhat.com> In-Reply-To: <20230522135018.2742245-1-dhowells@redhat.com> References: <20230522135018.2742245-1-dhowells@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1766603562105534394?= X-GMAIL-MSGID: =?utf-8?q?1766603562105534394?= |
Series |
splice: Kill ITER_PIPE
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Commit Message
David Howells
May 22, 2023, 1:50 p.m. UTC
For the splice from the trace seq buffer, just use copy_splice_read().
In the future, something better can probably be done by gifting pages from
seq->buf into the pipe, but that would require changing seq->buf into a
vmap over an array of pages.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Christoph Hellwig <hch@lst.de>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: Jens Axboe <axboe@kernel.dk>
cc: Steven Rostedt <rostedt@goodmis.org>
cc: Masami Hiramatsu <mhiramat@kernel.org>
cc: linux-kernel@vger.kernel.org
cc: linux-trace-kernel@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: linux-block@vger.kernel.org
cc: linux-mm@kvack.org
---
kernel/trace/trace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index ebc59781456a..c210d02fac97 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5171,7 +5171,7 @@ static const struct file_operations tracing_fops = { .open = tracing_open, .read = seq_read, .read_iter = seq_read_iter, - .splice_read = generic_file_splice_read, + .splice_read = copy_splice_read, .write = tracing_write_stub, .llseek = tracing_lseek, .release = tracing_release,