linux-kernel - [PATCH 3/3] ensure unique i_ino in filesystems without permanent inode numbers (pipefs)

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Date:	Thu, 07 Dec 2006 17:13:12 -0500
From:	Jeff Layton <jlayton@...hat.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH 3/3] ensure unique i_ino in filesystems without permanent
 inode numbers (pipefs)

pipefs is a rather busy filesystem and so is a good place to start to make
sure we flush out any performance problems

Signed-off-by: Jeff Layton <jlayton@...hat.com>

diff --git a/fs/pipe.c b/fs/pipe.c
index b1626f2..d74ae65 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -845,6 +845,9 @@ static struct inode * get_pipe_inode(voi
  	if (!inode)
  		goto fail_inode;

+	if (iunique_register(inode, 0))
+		goto fail_iput;
+
  	pipe = alloc_pipe_info(inode);
  	if (!pipe)
  		goto fail_iput;
-
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