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Commit a4dff1bc492ee4a2184d384ae8b5bcab5859e150

Authored by Stanislav Kinsbursky
Committed by Trond Myklebust
1 parent 5794d21ef4
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

SUNRPC: skip dead but not buried clients on PipeFS events 

These clients can't be safely dereferenced if their counter in 0.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff

... ... @@ -218,7 +218,8 @@
218 218 if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) ||
219 219 ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry))
220 220 continue;
221   - atomic_inc(&clnt->cl_count);
  221 + if (atomic_inc_not_zero(&clnt->cl_count) == 0)
  222 + continue;
222 223 spin_unlock(&sn->rpc_client_lock);
223 224 return clnt;
224 225 }