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author	Trond Myklebust <Trond.Myklebust@netapp.com>
	Thu, 7 Feb 2013 15:54:07 +0000 (10:54 -0500)
committer	Trond Myklebust <Trond.Myklebust@netapp.com>
	Mon, 11 Feb 2013 20:33:13 +0000 (15:33 -0500)
commit	65b62a29f719e937b5be1df472287f4c61e53ac6
tree	ea6b552a08883d92cfedb891044fa9697cbc5619	tree
parent	37380e4264dbda9753e470a30d4322097aab7152	commit \| diff

NFSv4: Ensure delegation recall and byte range lock removal don't conflict

Add a mutex to the struct nfs4_state_owner to ensure that delegation
recall doesn't conflict with byte range lock removal.

Note that we nest the new mutex _outside_ the state manager reclaim
protection (nfsi->rwsem) in order to avoid deadlocks.

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

fs/nfs/delegation.c		diff \| blob \| history
fs/nfs/nfs4_fs.h		diff \| blob \| history
fs/nfs/nfs4proc.c		diff \| blob \| history
fs/nfs/nfs4state.c		diff \| blob \| history

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