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NFSv4.1: Fix a race in set_pnfs_layoutdriver
authorTrond Myklebust <Trond.Myklebust@netapp.com>
Fri, 15 Jun 2012 17:02:58 +0000 (13:02 -0400)
committerTrond Myklebust <Trond.Myklebust@netapp.com>
Tue, 19 Jun 2012 17:32:45 +0000 (13:32 -0400)
The call to try_module_get() dereferences ld_type outside the
spin locks, which means that it may be pointing to garbage if
a module unload was in progress.

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

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