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| author | Chuck Lever | 2012-09-14 23:23:23 +0200 |
|---|---|---|
| committer | Trond Myklebust | 2012-10-02 00:31:51 +0200 |
| commit | ffe5a83005b0d23575ab109755b4cb5518a5d91f (patch) | |
| tree | be0a3c83446995a129f040c3bcb7c94b806b768c /net/sunrpc/rpc_pipe.c | |
| parent | NFS: nfs_parsed_mount_options can use unsigned int (diff) | |
| download | kernel-qcow2-linux-ffe5a83005b0d23575ab109755b4cb5518a5d91f.tar.gz kernel-qcow2-linux-ffe5a83005b0d23575ab109755b4cb5518a5d91f.tar.xz kernel-qcow2-linux-ffe5a83005b0d23575ab109755b4cb5518a5d91f.zip | |
NFS: Slow down state manager after an unhandled error
If the state manager thread is not actually able to fully recover from
some situation, it wakes up waiters, who kick off a new state manager
thread. Quite often the fresh invocation of the state manager is just
as successful.
This results in a livelock as the client dumps thousands of NFS
requests a second on the network in a vain attempt to recover. Not
very friendly.
To mitigate this situation, add a delay in the state manager after
an unhandled error, so that the client sends just a few requests
every second in this case.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/rpc_pipe.c')
0 files changed, 0 insertions, 0 deletions