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NFSd: Clean up nfs4_preprocess_stateid_op

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Move the state locking and file descriptor reference out from the
callers and into nfs4_preprocess_stateid_op() itself.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust 2014-04-18 14:44:07 -04:00 committed by J. Bruce Fields
parent 50cc62317d
commit 14bcab1a39
2 changed files with 13 additions and 17 deletions
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11
fs/nfsd/nfs4proc.c
View File

@ -786,7 +786,6 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (!nfsd4_last_compound_op(rqstp))
rqstp->rq_splice_ok = false;
nfs4_lock_state();
/* check stateid */
if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
cstate, &read->rd_stateid,
@ -794,11 +793,8 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
goto out;
}
if (read->rd_filp)
get_file(read->rd_filp);
status = nfs_ok;
out:
nfs4_unlock_state();
read->rd_rqstp = rqstp;
read->rd_fhp = &cstate->current_fh;
return status;
@ -937,10 +933,8 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
int err;
if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
nfs4_lock_state();
status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
&setattr->sa_stateid, WR_STATE, NULL);
nfs4_unlock_state();
if (status) {
dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
return status;
@ -1006,17 +1000,12 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (write->wr_offset >= OFFSET_MAX)
return nfserr_inval;
nfs4_lock_state();
status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
cstate, stateid, WR_STATE, &filp);
if (status) {
nfs4_unlock_state();
dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
return status;
}
if (filp)
get_file(filp);
nfs4_unlock_state();
cnt = write->wr_buflen;
write->wr_how_written = write->wr_stable_how;

19
fs/nfsd/nfs4state.c
View File

@ -3654,6 +3654,7 @@ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
struct svc_fh *current_fh = &cstate->current_fh;
struct inode *ino = current_fh->fh_dentry->d_inode;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct file *file = NULL;
__be32 status;
if (filpp)
@ -3665,10 +3666,12 @@ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
return check_special_stateids(net, current_fh, stateid, flags);
nfs4_lock_state();
status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
&s, cstate->minorversion, nn);
if (status)
return status;
goto out;
status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate));
if (status)
goto out;
@ -3679,8 +3682,8 @@ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
if (status)
goto out;
if (filpp) {
*filpp = dp->dl_file->fi_deleg_file;
if (!*filpp) {
file = dp->dl_file->fi_deleg_file;
if (!file) {
WARN_ON_ONCE(1);
status = nfserr_serverfault;
goto out;
@ -3701,16 +3704,20 @@ nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate,
goto out;
if (filpp) {
if (flags & RD_STATE)
*filpp = find_readable_file(stp->st_file);
file = find_readable_file(stp->st_file);
else
*filpp = find_writeable_file(stp->st_file);
file = find_writeable_file(stp->st_file);
}
break;
default:
return nfserr_bad_stateid;
status = nfserr_bad_stateid;
goto out;
}
status = nfs_ok;
if (file)
*filpp = get_file(file);
out:
nfs4_unlock_state();
return status;
}