From patchwork Mon Sep 23 15:28:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13809788 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 20B78199FC6; Mon, 23 Sep 2024 15:29:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727105388; cv=none; b=rKOEEehCTP3UCDs8xY1MdWt1WPx6KtnZq636bm7XbUPD5+nbF4AOltSZOUbGx4WZENpTTtYXa8TUxBKgRMexRfGB1UvJO0HpOxZ3abfyJkaHSEPQguB90tbnuunx+oztDeIO2CtFX7py6zkkuBxRhyV4AcQk4gaR+KudgDKzYeg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727105388; c=relaxed/simple; bh=dO7DPx9lr+A6EiTToDNsMt0eMLyFbcysQqhoPY9lCwM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XlTdkE0aPD0qEatQZHBkU0OiJlQ/zm+QBou15/GptTRx3D19SO4WewYkRWH+1UVFTprModjJkCKbvnJqbQ+tffQZwwSIpgXSUWK6Bqq/41oa5FZQTUkCgYanWr56l1/dxXw5tEFqkBfh+faffr45fFKRMvo43rj+M+6rdQZPQuE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=3vJg4i0v; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="3vJg4i0v" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=YNRHAj4pG2z8wKAOo6HVGGA4NzRephlTf1ufR3qBIbg=; b=3vJg4i0vM214BtReHxm3G8RafI +418TqQcNlmwIzKNzgV6OcI9WkuGZFoSxxXux2MO/9IF2OQMY/8t3iquT8JPIAE/N+TyFAFhHNJUY 5K+zUWrKnTw+Ul9Gs65WmKDc6bNKAmfIAlwO2cbHaBcDWUJnT4rsC6Zc5u4E/vkBDLuqUFkotv0U7 NmuaGMLZwtJSPY48+WA7kebC5sQ4A3J/ONvPmCNGFJ51muzZFDQX7yahRfTjcAPOSJKlSI/IEOsY6 1ndDTFnzjiFaBOlpzzwyclpAxCX/IiLML6tFa0ZgouEo+yiHUJIEvYRfjiurndfgpuqYV1xLBVXsn oYOZkoog==; Received: from 2a02-8389-2341-5b80-4c13-f559-77bd-3c36.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:4c13:f559:77bd:3c36] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1ssl0U-0000000HVIB-0cAl; Mon, 23 Sep 2024 15:29:46 +0000 From: Christoph Hellwig To: Chandan Babu R , Christian Brauner , "Darrick J. Wong" Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 10/10] xfs: punch delalloc extents from the COW fork for COW writes Date: Mon, 23 Sep 2024 17:28:24 +0200 Message-ID: <20240923152904.1747117-11-hch@lst.de> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240923152904.1747117-1-hch@lst.de> References: <20240923152904.1747117-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html When ->iomap_end is called on a short write to the COW fork it needs to punch stale delalloc data from the COW fork and not the data fork. Ensure that IOMAP_F_NEW is set for new COW fork allocations in xfs_buffered_write_iomap_begin, and then use the IOMAP_F_SHARED flag in xfs_buffered_write_delalloc_punch to decide which fork to punch. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/xfs/xfs_iomap.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index cc768f0139d365..8a4e5f14ec0c77 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -1195,7 +1195,7 @@ xfs_buffered_write_iomap_begin( xfs_trim_extent(&cmap, offset_fsb, imap.br_startoff - offset_fsb); } - iomap_flags = IOMAP_F_SHARED; + iomap_flags |= IOMAP_F_SHARED; seq = xfs_iomap_inode_sequence(ip, iomap_flags); xfs_iunlock(ip, lockmode); return xfs_bmbt_to_iomap(ip, iomap, &cmap, flags, iomap_flags, seq); @@ -1212,8 +1212,10 @@ xfs_buffered_write_delalloc_punch( loff_t length, struct iomap *iomap) { - xfs_bmap_punch_delalloc_range(XFS_I(inode), XFS_DATA_FORK, offset, - offset + length); + xfs_bmap_punch_delalloc_range(XFS_I(inode), + (iomap->flags & IOMAP_F_SHARED) ? + XFS_COW_FORK : XFS_DATA_FORK, + offset, offset + length); } static int