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NFS: Detect loops in a readdir due to bad cookies
authorBryan Schumaker <bjschuma@netapp.com>
Wed, 23 Mar 2011 19:04:31 +0000 (15:04 -0400)
committerTrond Myklebust <Trond.Myklebust@netapp.com>
Wed, 23 Mar 2011 19:14:27 +0000 (15:14 -0400)
Some filesystems (such as ext4) can return the same cookie value for
multiple files.  If we try to start a readdir with one of these cookies,
the server will return the first file found with a cookie of the same
value.  This can cause the client to enter an infinite loop.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

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