[PATCH] NFS: Fix Oopsable/unnecessary i_count manipulations in nfs_wait_on_inode()

Oopsable since nfs_wait_on_inode() can get called as part of iput_final().

Unnecessary since the caller had better be damned sure that the inode won't
disappear from underneath it anyway.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/nfs/inode.c

@@ -877,12 +877,10 @@ static int nfs_wait_on_inode(struct inode *inode)
 	sigset_t oldmask;
 	int error;
 
-	atomic_inc(&inode->i_count);
 	rpc_clnt_sigmask(clnt, &oldmask);
 	error = wait_on_bit_lock(&nfsi->flags, NFS_INO_REVALIDATING,
 					nfs_wait_schedule, TASK_INTERRUPTIBLE);
 	rpc_clnt_sigunmask(clnt, &oldmask);
-	iput(inode);
 
 	return error;
 }