From patchwork Mon Sep 23 15:28:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13809781 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 3E09019CD12; Mon, 23 Sep 2024 15:29:32 +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=1727105373; cv=none; b=T996PFksLbr+KLS2GdTfjmaGGKOL0MRrKLNmlaa7b67WnxdYNTBv0DVfLbJwop9RKQke6JfY5Z0qQsCoN3sCUeovSoaoeSANfd0ypUkRGWp6q1lcOJTftQlQN/cK0mGCUM98/5+ZojrxA1FotcCIY+CcEdiJiYgSW7O8kXAcjWQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727105373; c=relaxed/simple; bh=XF5m3LJn6QFImskENJqD3junbHbiv+D+B8UugmwY2cc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fEPiqoZl1QJZu15udBiWhfIuqLtZclVNX7q8B5hezdmNZ7YcetACG3W9vlelgiYG4PbfsfotcptVHCgs7v97S1mvX9CW7BJLRPOWWOZMmVtG8WHgWtaBmMyme6iC5xuEAJJMBDCjndfBZgRFde+FRxSV7CQj55S6e7w/gZkYPMk= 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=x4Z/fO0i; 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="x4Z/fO0i" 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=J//fTUGztMygvwJgGwt+1V76oFzuvFO4GEJZRSxThS8=; b=x4Z/fO0ivqsexPpEKRwvGiORuM q46wPqmVbfkwd+9tbD1047vK7JlVUJ/MiccbANYvaWZ/4SVxyo2BWg+tBf2swu+ROvn2Dl57ki+DS JKShHk9bHVx45xceArNDBpLRaAo4mNH+8W0FVrE8qhrk9IZ4GKKBxJx6RMO8quDhVUkywripsKxoR ML7vwLUk+AvOc5CHdDIEklJd1iPp/mYsv6FME7j0c7tNv+fHh0zkKDMYSDGtaMK9V3b+PBGO1iaZx z+TCeyW5hakcovKn/dx4NuaIcLb4Ttpma37IVMVQ6h9zLap1sidJrm1cj3PL0f803ovzYVx7FmRli myYqYdVQ==; 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 1ssl0F-0000000HVBb-1Fag; Mon, 23 Sep 2024 15:29:31 +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 06/10] xfs: zeroing already holds invalidate_lock Date: Mon, 23 Sep 2024 17:28:20 +0200 Message-ID: <20240923152904.1747117-7-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-fsdevel@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 All XFS callers of iomap_zero_range already hold invalidate_lock, so we can't take it again in iomap_file_buffered_write_punch_delalloc. Use the passed in flags argument to detect if we're called from a zeroing operation and don't take the lock again in this case. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/xfs/xfs_iomap.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 4fa4d66dc37761..0f5fa3de6d3ecc 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -1239,10 +1239,17 @@ xfs_buffered_write_iomap_end( if (start_byte >= end_byte) return 0; - filemap_invalidate_lock(inode->i_mapping); + /* For zeroing operations the callers already hold invalidate_lock. */ + if (flags & IOMAP_ZERO) + rwsem_assert_held_write(&inode->i_mapping->invalidate_lock); + else + filemap_invalidate_lock(inode->i_mapping); + iomap_write_delalloc_release(inode, start_byte, end_byte, flags, iomap, xfs_buffered_write_delalloc_punch); - filemap_invalidate_unlock(inode->i_mapping); + + if (!(flags & IOMAP_ZERO)) + filemap_invalidate_unlock(inode->i_mapping); return 0; }