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From: Christoph Hellwig <hch@lst.de>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 18/19] pnfs/blocklayout: return layouts on setattr
Date: Thu, 21 Aug 2014 11:09:34 -0500
Message-Id: <1408637375-11343-19-git-send-email-hch@lst.de>
In-Reply-To: <1408637375-11343-1-git-send-email-hch@lst.de>
References: <pnfs block layout driver fixes V2>
 <1408637375-11343-1-git-send-email-hch@lst.de>
Sender: linux-nfs-owner@vger.kernel.org
List-ID: <linux-nfs.vger.kernel.org>

This speads up truncate-heavy workloads like fsx by multiple orders of
magnitude.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/nfs/blocklayout/blocklayout.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index a7524c4..d5a2b87 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -799,7 +799,8 @@ static struct pnfs_layoutdriver_type blocklayout_type = {
 	.id				= LAYOUT_BLOCK_VOLUME,
 	.name				= "LAYOUT_BLOCK_VOLUME",
 	.owner				= THIS_MODULE,
-	.flags				= PNFS_READ_WHOLE_PAGE,
+	.flags				= PNFS_LAYOUTRET_ON_SETATTR |
+					  PNFS_READ_WHOLE_PAGE,
 	.read_pagelist			= bl_read_pagelist,
 	.write_pagelist			= bl_write_pagelist,
 	.alloc_layout_hdr		= bl_alloc_layout_hdr,
-- 
1.9.1