From 58fb12e6a42f30adf209f8f41385a3bbb2c82420 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 29 Jul 2014 21:34:27 -0400 Subject: nfsd: Add a mutex to protect the NFSv4.0 open owner replay cache We don't want to rely on the client_mutex for protection in the case of NFSv4 open owners. Instead, we add a mutex that will only be taken for NFSv4.0 state mutating operations, and that will be released once the entire compound is done. Also, ensure that nfsd4_cstate_assign_replay/nfsd4_cstate_clear_replay take a reference to the stateowner when they are using it for NFSv4.0 open and lock replay caching. Signed-off-by: Trond Myklebust Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/nfsd/state.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/nfsd/state.h') diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index dc725deb4aa..9cba295812f 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -328,6 +328,7 @@ struct nfs4_replay { unsigned int rp_buflen; char *rp_buf; struct knfsd_fh rp_openfh; + struct mutex rp_mutex; char rp_ibuf[NFSD4_REPLAY_ISIZE]; }; -- cgit v1.2.3-70-g09d2