NFSv4: Only increment the sequence id if the server saw it
It is quite possible that the OPEN, CLOSE, LOCK, LOCKU,... compounds fail
before the actual stateful operation has been executed (for instance in the
PUTFH call). There is no way to tell from the overall status result which
operations were executed from the COMPOUND.
The fix is to move incrementing of the sequence id into the XDR layer,
so that we do it as we process the results from the stateful operation.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 424aa20..9f2759d 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -240,6 +240,8 @@
{
p->o_res.f_attr = &p->f_attr;
p->o_res.dir_attr = &p->dir_attr;
+ p->o_res.seqid = p->o_arg.seqid;
+ p->c_res.seqid = p->c_arg.seqid;
p->o_res.server = p->o_arg.server;
nfs_fattr_init(&p->f_attr);
nfs_fattr_init(&p->dir_attr);
@@ -730,7 +732,6 @@
renew_lease(data->o_res.server, data->timestamp);
data->rpc_done = 1;
}
- nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid);
}
static void nfs4_open_confirm_release(void *calldata)
@@ -860,7 +861,6 @@
if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
nfs_confirm_seqid(&data->owner->so_seqid, 0);
}
- nfs_increment_open_seqid(data->rpc_status, data->o_arg.seqid);
data->rpc_done = 1;
}
@@ -1226,7 +1226,6 @@
/* hmm. we are done with the inode, and in the process of freeing
* the state_owner. we keep this around to process errors
*/
- nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid);
switch (task->tk_status) {
case 0:
nfs_set_open_stateid(state, &calldata->res.stateid, 0);
@@ -1333,6 +1332,7 @@
goto out_free_calldata;
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
+ calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
calldata->path.mnt = mntget(path->mnt);
calldata->path.dentry = dget(path->dentry);
@@ -3159,6 +3159,7 @@
p->arg.fh = NFS_FH(inode);
p->arg.fl = &p->fl;
p->arg.seqid = seqid;
+ p->res.seqid = seqid;
p->arg.stateid = &lsp->ls_stateid;
p->lsp = lsp;
atomic_inc(&lsp->ls_count);
@@ -3184,7 +3185,6 @@
if (RPC_ASSASSINATED(task))
return;
- nfs_increment_lock_seqid(task->tk_status, calldata->arg.seqid);
switch (task->tk_status) {
case 0:
memcpy(calldata->lsp->ls_stateid.data,
@@ -3322,6 +3322,7 @@
p->arg.lock_stateid = &lsp->ls_stateid;
p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
p->arg.lock_owner.id = lsp->ls_id.id;
+ p->res.lock_seqid = p->arg.lock_seqid;
p->lsp = lsp;
atomic_inc(&lsp->ls_count);
p->ctx = get_nfs_open_context(ctx);
@@ -3348,6 +3349,7 @@
return;
data->arg.open_stateid = &state->stateid;
data->arg.new_lock_owner = 1;
+ data->res.open_seqid = data->arg.open_seqid;
} else
data->arg.new_lock_owner = 0;
data->timestamp = jiffies;
@@ -3365,7 +3367,6 @@
if (RPC_ASSASSINATED(task))
goto out;
if (data->arg.new_lock_owner != 0) {
- nfs_increment_open_seqid(data->rpc_status, data->arg.open_seqid);
if (data->rpc_status == 0)
nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
else
@@ -3377,7 +3378,6 @@
data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
}
- nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid);
out:
dprintk("%s: done, ret = %d!\n", __FUNCTION__, data->rpc_status);
}