From patchwork Thu Sep 29 18:45:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 12994558 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F06B6C433F5 for ; Thu, 29 Sep 2022 18:46:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235865AbiI2SqH (ORCPT ); Thu, 29 Sep 2022 14:46:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235951AbiI2Spd (ORCPT ); Thu, 29 Sep 2022 14:45:33 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA591AE22D; Thu, 29 Sep 2022 11:45:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C84AE60684; Thu, 29 Sep 2022 18:45:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C995C433D6; Thu, 29 Sep 2022 18:45:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664477112; bh=e3WTV08Ir+tXvT94bmU+LUp1s/VgZmvjJwbeb8yi/w8=; h=Date:From:To:Subject:From; b=FOlsjTNXSLgvejfQ6LzPsSQ95f0Rmr8REOMLFtjSiQ2tYmoOVKxJMpaEMgi3p+Rob HTpQpq2V1/tY9RLfqcccm+4G5ZFmZQEPvkLWKyQ+tcNuGknPh+FLO2nCKungHsR072 SjNZ37vJnfG5Ms5AlBwUrqz7zgUPgY3QQKytU1ViQp6w4QhvUkVSAjBaG1n960TPau GHfu8ScvIPsZprQTmEZKvY4eiZqssFr350TajLsZGyBMHOolymN4FVg/L5W48iAS5p Rw6OIoqPJ2nJ83cPNFGdlktx/FeX4Lnzdc3eSKvXGhNCnsCF1kfJ99SiGCAFC5gOZm eMDcLhHkgALRw== Date: Thu, 29 Sep 2022 11:45:11 -0700 From: "Darrick J. Wong" To: linux-fsdevel , xfs Subject: [PATCH] iomap: add a tracepoint for mappings returned by map_blocks Message-ID: MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Darrick J. Wong Add a new tracepoint so we can see what mapping the filesystem returns to writeback a dirty page. Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner --- fs/iomap/buffered-io.c | 1 + fs/iomap/trace.h | 1 + 2 files changed, 2 insertions(+) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 77d59c159248..91ee0b308e13 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1360,6 +1360,7 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, error = wpc->ops->map_blocks(wpc, inode, pos); if (error) break; + trace_iomap_writepage_map(inode, &wpc->iomap); if (WARN_ON_ONCE(wpc->iomap.type == IOMAP_INLINE)) continue; if (wpc->iomap.type == IOMAP_HOLE) diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h index d48868fc40d7..f6ea9540d082 100644 --- a/fs/iomap/trace.h +++ b/fs/iomap/trace.h @@ -148,6 +148,7 @@ DEFINE_EVENT(iomap_class, name, \ TP_ARGS(inode, iomap)) DEFINE_IOMAP_EVENT(iomap_iter_dstmap); DEFINE_IOMAP_EVENT(iomap_iter_srcmap); +DEFINE_IOMAP_EVENT(iomap_writepage_map); TRACE_EVENT(iomap_iter, TP_PROTO(struct iomap_iter *iter, const void *ops,