From: Andy Adamson <andros@netapp.com>
Date: Wed, 20 Jun 2012 19:03:31 +0000 (-0400)
Subject: NFSv4.1 return the LAYOUT for each file with failed DS connection I/O
X-Git-Tag: v3.6-rc1~38^2~32
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=82c7c7a5a9270b13380a588dc57b7541a5e4f541;p=profile%2Fivi%2Fkernel-x86-ivi.git

NFSv4.1 return the LAYOUT for each file with failed DS connection I/O

First mark the deviceid invalid to prevent any future use. Then fence all
files involved in I/O to a DS with a connection error by sending a
LAYOUTRETURN.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 85b7063..26b96de 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -205,9 +205,8 @@ static int filelayout_async_handle_error(struct rpc_task *task,
 	case -EPIPE:
 		dprintk("%s DS connection error %d\n", __func__,
 			task->tk_status);
-		if (!filelayout_test_devid_invalid(devid))
-			_pnfs_return_layout(inode);
 		filelayout_mark_devid_invalid(devid);
+		_pnfs_return_layout(inode);
 		rpc_wake_up(&tbl->slot_tbl_waitq);
 		nfs4_ds_disconnect(clp);
 		/* fall through */