Messages in this thread Patch in this message | | | Date | Fri, 30 Mar 2012 12:58:28 -0700 | From | Greg KH <> | Subject | [ 066/108] NFSv4: Return the delegation if the server returns NFS4ERR_OPENMODE |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: Trond Myklebust <Trond.Myklebust@netapp.com>
commit 3114ea7a24d3264c090556a2444fc6d2c06176d4 upstream.
If a setattr() fails because of an NFS4ERR_OPENMODE error, it is probably due to us holding a read delegation. Ensure that the recovery routines return that delegation in this case.
Reported-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 13 ++++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-)
--- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -209,6 +209,7 @@ struct nfs4_exception { long timeout; int retry; struct nfs4_state *state; + struct inode *inode; }; struct nfs4_state_recovery_ops { --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -254,18 +254,28 @@ static int nfs4_handle_exception(struct { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; + struct inode *inode = exception->inode; int ret = errorcode; exception->retry = 0; switch(errorcode) { case 0: return 0; + case -NFS4ERR_OPENMODE: + if (nfs_have_delegation(inode, FMODE_READ)) { + nfs_inode_return_delegation(inode); + exception->retry = 1; + return 0; + } + if (state == NULL) + break; + nfs4_schedule_stateid_recovery(server, state); + goto wait_on_recovery; case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: if (state != NULL) nfs_remove_bad_delegation(state->inode); - case -NFS4ERR_OPENMODE: if (state == NULL) break; nfs4_schedule_stateid_recovery(server, state); @@ -1870,6 +1880,7 @@ static int nfs4_do_setattr(struct inode struct nfs_server *server = NFS_SERVER(inode); struct nfs4_exception exception = { .state = state, + .inode = inode, }; int err; do {
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