Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e148582e10a2c1a23dfc09210df4a18bc6cca4e9
Commit: e148582e10a2c1a23dfc09210df4a18bc6cca4e9
Parent: a6a352e93dfa78db8903f0e3610abb76efbf7fc9
Author: Trond Myklebust <[EMAIL PROTECTED]>
AuthorDate: Wed Dec 13 16:43:13 2006 -0500
Committer: Trond Myklebust <[EMAIL PROTECTED]>
CommitDate: Sat Feb 3 15:35:08 2007 -0800
NFSv4: Add lockdep checks to nfs4_wait_clnt_recover()
Attempt to detect deadlocks due to caller holding locks on clp->cl_sem
Signed-off-by: Trond Myklebust <[EMAIL PROTECTED]>
---
fs/nfs/nfs4proc.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 35bfcce..1712d03 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2711,11 +2711,15 @@ static int nfs4_wait_clnt_recover(struct rpc_clnt
*clnt, struct nfs_client *clp)
might_sleep();
+ rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_);
+
rpc_clnt_sigmask(clnt, &oldset);
res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER,
nfs4_wait_bit_interruptible,
TASK_INTERRUPTIBLE);
rpc_clnt_sigunmask(clnt, &oldset);
+
+ rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_);
return res;
}
-
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