From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (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 3B036270EC3; Mon, 13 Oct 2025 01:52:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760320364; cv=none; b=iKpVk40Jk5b2rhCdmHSwoRabafsM5lLezeRHONfV09CZYIXh/smP3moTYIHeEUl8Ax+vlkXtw2PP1rTSATksSJUceoRn3IL8Jinm7bFYTOYmD1T9koPVrLcW/hoMEklzczwTjGzA6q/gxfcxLsThcBCj3IF+FA8UyDLbV6OcEV8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760320364; c=relaxed/simple; bh=TCWTYnPez7p6t067V1HQYltC++3+VpsLpFHKVD9QRRE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fpy4KxMcxgdWSvl5leslaOSHQFDRJCWBXzOknafMCf4Rp2d08woYUfPzYpCl609zf8ijZNkiK9XfEQb5tGh970IlaejJeuDZlPojXzO9z+WtEo8/SXxeAMrb7S2BS2+h0CZKX6D+JSNEl45mWXYgzcl9u/FcAmar0wJNht9UDKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4clL1y1TrBzKHMQX; Mon, 13 Oct 2025 09:52:06 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.75]) by mail.maildlp.com (Postfix) with ESMTP id 4E3A51A16C1; Mon, 13 Oct 2025 09:52:40 +0800 (CST) Received: from huaweicloud.com (unknown [10.50.85.155]) by APP2 (Coremail) with SMTP id Syh0CgCn_UVfW+xoNhu7AA--.53067S16; Mon, 13 Oct 2025 09:52:40 +0800 (CST) From: Zhang Yi To: linux-ext4@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, jack@suse.cz, yi.zhang@huawei.com, yi.zhang@huaweicloud.com, libaokun1@huawei.com, yukuai3@huawei.com, yangerkun@huawei.com Subject: [PATCH v4 12/12] ext4: add two trace points for moving extents Date: Mon, 13 Oct 2025 09:51:28 +0800 Message-ID: <20251013015128.499308-13-yi.zhang@huaweicloud.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20251013015128.499308-1-yi.zhang@huaweicloud.com> References: <20251013015128.499308-1-yi.zhang@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:Syh0CgCn_UVfW+xoNhu7AA--.53067S16 X-Coremail-Antispam: 1UD129KBjvJXoWxCFyDAF4DAF1kWFykWFykZrb_yoWrtr4xpF n7AFy5K3ykXaya934xAw48Zr45ua4IkrW7KrWSg343Xayxtr1qgr4kta1jyF9YyrW8Kryf XFWjyryDKa45W3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmS14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVW8JVW5JwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF 4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBI daVFxhVjvjDU0xZFpf9x0JUljgxUUUUU= X-CM-SenderInfo: d1lo6xhdqjqx5xdzvxpfor3voofrz/ From: Zhang Yi To facilitate tracking the length, type, and outcome of the move extent, add a trace point at both the entry and exit of mext_move_extent(). Signed-off-by: Zhang Yi Reviewed-by: Jan Kara --- fs/ext4/move_extent.c | 14 ++++++- include/trace/events/ext4.h | 74 +++++++++++++++++++++++++++++++++++++ 2 files changed, 86 insertions(+), 2 deletions(-) diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index f04755c2165a..0550fd30fd10 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -13,6 +13,8 @@ #include "ext4.h" #include "ext4_extents.h" +#include + struct mext_data { struct inode *orig_inode; /* Origin file inode */ struct inode *donor_inode; /* Donor file inode */ @@ -311,10 +313,14 @@ static int mext_move_extent(struct mext_data *mext, u64 *m_len) int ret, ret2; *m_len = 0; + trace_ext4_move_extent_enter(orig_inode, orig_map, donor_inode, + mext->donor_lblk); credits = ext4_chunk_trans_extent(orig_inode, 0) * 2; handle = ext4_journal_start(orig_inode, EXT4_HT_MOVE_EXTENTS, credits); - if (IS_ERR(handle)) - return PTR_ERR(handle); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + goto out; + } ret = mext_move_begin(mext, folio, &move_type); if (ret) @@ -379,6 +385,10 @@ static int mext_move_extent(struct mext_data *mext, u64 *m_len) mext_folio_double_unlock(folio); stop_handle: ext4_journal_stop(handle); +out: + trace_ext4_move_extent_exit(orig_inode, orig_map->m_lblk, donor_inode, + mext->donor_lblk, orig_map->m_len, *m_len, + move_type, ret); return ret; repair_branches: diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 6a0754d38acf..a05bdd48e16e 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -3016,6 +3016,80 @@ TRACE_EVENT(ext4_update_sb, __entry->fsblk, __entry->flags) ); +TRACE_EVENT(ext4_move_extent_enter, + TP_PROTO(struct inode *orig_inode, struct ext4_map_blocks *orig_map, + struct inode *donor_inode, ext4_lblk_t donor_lblk), + + TP_ARGS(orig_inode, orig_map, donor_inode, donor_lblk), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, orig_ino) + __field(ext4_lblk_t, orig_lblk) + __field(unsigned int, orig_flags) + __field(ino_t, donor_ino) + __field(ext4_lblk_t, donor_lblk) + __field(unsigned int, len) + ), + + TP_fast_assign( + __entry->dev = orig_inode->i_sb->s_dev; + __entry->orig_ino = orig_inode->i_ino; + __entry->orig_lblk = orig_map->m_lblk; + __entry->orig_flags = orig_map->m_flags; + __entry->donor_ino = donor_inode->i_ino; + __entry->donor_lblk = donor_lblk; + __entry->len = orig_map->m_len; + ), + + TP_printk("dev %d,%d origin ino %lu lblk %u flags %s donor ino %lu lblk %u len %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long) __entry->orig_ino, __entry->orig_lblk, + show_mflags(__entry->orig_flags), + (unsigned long) __entry->donor_ino, __entry->donor_lblk, + __entry->len) +); + +TRACE_EVENT(ext4_move_extent_exit, + TP_PROTO(struct inode *orig_inode, ext4_lblk_t orig_lblk, + struct inode *donor_inode, ext4_lblk_t donor_lblk, + unsigned int m_len, u64 move_len, int move_type, int ret), + + TP_ARGS(orig_inode, orig_lblk, donor_inode, donor_lblk, m_len, + move_len, move_type, ret), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, orig_ino) + __field(ext4_lblk_t, orig_lblk) + __field(ino_t, donor_ino) + __field(ext4_lblk_t, donor_lblk) + __field(unsigned int, m_len) + __field(u64, move_len) + __field(int, move_type) + __field(int, ret) + ), + + TP_fast_assign( + __entry->dev = orig_inode->i_sb->s_dev; + __entry->orig_ino = orig_inode->i_ino; + __entry->orig_lblk = orig_lblk; + __entry->donor_ino = donor_inode->i_ino; + __entry->donor_lblk = donor_lblk; + __entry->m_len = m_len; + __entry->move_len = move_len; + __entry->move_type = move_type; + __entry->ret = ret; + ), + + TP_printk("dev %d,%d origin ino %lu lblk %u donor ino %lu lblk %u m_len %u, move_len %llu type %d ret %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long) __entry->orig_ino, __entry->orig_lblk, + (unsigned long) __entry->donor_ino, __entry->donor_lblk, + __entry->m_len, __entry->move_len, __entry->move_type, + __entry->ret) +); + #endif /* _TRACE_EXT4_H */ /* This part must be outside protection */ -- 2.46.1