[PATCH v1 net-next 1/1] fs: gfs2: Check if the return value of rhashtable_walk_start is -EAGAIN

From	fgao@ikuai8.com
Newsgroups	linux.kernel
Subject	[PATCH v1 net-next 1/1] fs: gfs2: Check if the return value of rhashtable_walk_start is -EAGAIN
Date	2016-08-23 16:30 +0200
Message-ID	<s9kSd-5aF-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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From: Gao Feng <fgao@ikuai8.com>

When rhashtable_walk_start returns -EAGAIN, it means the resize event
happened but the iterator still could be used. So it should not be
treated as an error in gfs2_glock_seq_start.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
---
 fs/gfs2/glock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 3a90b2b..732721b 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1818,7 +1818,7 @@ static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos)
 		n = (*pos - gi->last_pos);
 
 	ret = rhashtable_walk_start(&gi->hti);
-	if (ret)
+	if (ret && ret != -EAGAIN)
 		return NULL;
 
 	do {
-- 
1.9.1

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[PATCH v1 net-next 1/1] fs: gfs2: Check if the return value of rhashtable_walk_start is -EAGAIN fgao@ikuai8.com - 2016-08-23 16:30 +0200

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