linux-kernel - [PATCH] pnfs: Increase the refcount when LAYOUTGET fails the first time

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Message-Id: <1357301989-10278-1-git-send-email-ycnian@gmail.com>
Date:	Fri,  4 Jan 2013 20:19:49 +0800
From:	ycnian@...il.com
To:	Trond.Myklebust@...app.com
Cc:	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	Yanchuan Nian <ycnian@...il.com>
Subject: [PATCH] pnfs: Increase the refcount when LAYOUTGET fails the first time

From: Yanchuan Nian <ycnian@...il.com>

The layout will be set unusable if LAYOUTGET fails. Is it reasonable to
increase the refcount iff LAYOUTGET fails the first time?

Signed-off-by: Yanchuan Nian <ycnian@...il.com>
---
 fs/nfs/pnfs.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index e7165d9..d00260b 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -254,7 +254,7 @@ static void
 pnfs_layout_set_fail_bit(struct pnfs_layout_hdr *lo, int fail_bit)
 {
 	lo->plh_retry_timestamp = jiffies;
-	if (test_and_set_bit(fail_bit, &lo->plh_flags))
+	if (!test_and_set_bit(fail_bit, &lo->plh_flags))
 		atomic_inc(&lo->plh_refcount);
 }
 
-- 
1.7.4.4

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