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NFSD: Rename the fields in copy_stateid_t 

Code maintenance: The name of the copy_stateid_t::sc_count field
collides with the sc_count field in struct nfs4_stid, making the
latter difficult to grep for when auditing stateid reference
counting.

No behavior change expected.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2022-09-22 13:10:35 -04:00
parent 1342f9dd3f
commit 781fde1a2b
3 changed files with 21 additions and 21 deletions
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6
fs/nfsd/nfs4proc.c
View File

@ -1828,7 +1828,7 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (!nfs4_init_copy_state(nn, copy))
goto out_err;
refcount_set(&async_copy->refcount, 1);
memcpy(&copy->cp_res.cb_stateid, &copy->cp_stateid.stid,
memcpy(&copy->cp_res.cb_stateid, &copy->cp_stateid.cs_stid,
sizeof(copy->cp_res.cb_stateid));
dup_copy_fields(copy, async_copy);
async_copy->copy_task = kthread_create(nfsd4_do_async_copy,
@ -1864,7 +1864,7 @@ find_async_copy(struct nfs4_client *clp, stateid_t *stateid)
spin_lock(&clp->async_lock);
list_for_each_entry(copy, &clp->async_copies, copies) {
if (memcmp(&copy->cp_stateid.stid, stateid, NFS4_STATEID_SIZE))
if (memcmp(&copy->cp_stateid.cs_stid, stateid, NFS4_STATEID_SIZE))
continue;
refcount_inc(&copy->refcount);
spin_unlock(&clp->async_lock);
@ -1918,7 +1918,7 @@ nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
cps = nfs4_alloc_init_cpntf_state(nn, stid);
if (!cps)
goto out;
memcpy(&cn->cpn_cnr_stateid, &cps->cp_stateid.stid, sizeof(stateid_t));
memcpy(&cn->cpn_cnr_stateid, &cps->cp_stateid.cs_stid, sizeof(stateid_t));
memcpy(&cps->cp_p_stateid, &stid->sc_stateid, sizeof(stateid_t));
memcpy(&cps->cp_p_clid, &clp->cl_clientid, sizeof(clientid_t));

30
fs/nfsd/nfs4state.c
View File

@ -974,19 +974,19 @@ out_free:
* Create a unique stateid_t to represent each COPY.
*/
static int nfs4_init_cp_state(struct nfsd_net *nn, copy_stateid_t *stid,
unsigned char sc_type)
unsigned char cs_type)
{
int new_id;
stid->stid.si_opaque.so_clid.cl_boot = (u32)nn->boot_time;
stid->stid.si_opaque.so_clid.cl_id = nn->s2s_cp_cl_id;
stid->sc_type = sc_type;
stid->cs_stid.si_opaque.so_clid.cl_boot = (u32)nn->boot_time;
stid->cs_stid.si_opaque.so_clid.cl_id = nn->s2s_cp_cl_id;
stid->cs_type = cs_type;
idr_preload(GFP_KERNEL);
spin_lock(&nn->s2s_cp_lock);
new_id = idr_alloc_cyclic(&nn->s2s_cp_stateids, stid, 0, 0, GFP_NOWAIT);
stid->stid.si_opaque.so_id = new_id;
stid->stid.si_generation = 1;
stid->cs_stid.si_opaque.so_id = new_id;
stid->cs_stid.si_generation = 1;
spin_unlock(&nn->s2s_cp_lock);
idr_preload_end();
if (new_id < 0)
@ -1008,7 +1008,7 @@ struct nfs4_cpntf_state *nfs4_alloc_init_cpntf_state(struct nfsd_net *nn,
if (!cps)
return NULL;
cps->cpntf_time = ktime_get_boottime_seconds();
refcount_set(&cps->cp_stateid.sc_count, 1);
refcount_set(&cps->cp_stateid.cs_count, 1);
if (!nfs4_init_cp_state(nn, &cps->cp_stateid, NFS4_COPYNOTIFY_STID))
goto out_free;
spin_lock(&nn->s2s_cp_lock);
@ -1024,11 +1024,11 @@ void nfs4_free_copy_state(struct nfsd4_copy *copy)
{
struct nfsd_net *nn;
WARN_ON_ONCE(copy->cp_stateid.sc_type != NFS4_COPY_STID);
WARN_ON_ONCE(copy->cp_stateid.cs_type != NFS4_COPY_STID);
nn = net_generic(copy->cp_clp->net, nfsd_net_id);
spin_lock(&nn->s2s_cp_lock);
idr_remove(&nn->s2s_cp_stateids,
copy->cp_stateid.stid.si_opaque.so_id);
copy->cp_stateid.cs_stid.si_opaque.so_id);
spin_unlock(&nn->s2s_cp_lock);
}
@ -6027,7 +6027,7 @@ nfs4_laundromat(struct nfsd_net *nn)
spin_lock(&nn->s2s_cp_lock);
idr_for_each_entry(&nn->s2s_cp_stateids, cps_t, i) {
cps = container_of(cps_t, struct nfs4_cpntf_state, cp_stateid);
if (cps->cp_stateid.sc_type == NFS4_COPYNOTIFY_STID &&
if (cps->cp_stateid.cs_type == NFS4_COPYNOTIFY_STID &&
state_expired(&lt, cps->cpntf_time))
_free_cpntf_state_locked(nn, cps);
}
@ -6359,12 +6359,12 @@ out:
static void
_free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps)
{
WARN_ON_ONCE(cps->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID);
if (!refcount_dec_and_test(&cps->cp_stateid.sc_count))
WARN_ON_ONCE(cps->cp_stateid.cs_type != NFS4_COPYNOTIFY_STID);
if (!refcount_dec_and_test(&cps->cp_stateid.cs_count))
return;
list_del(&cps->cp_list);
idr_remove(&nn->s2s_cp_stateids,
cps->cp_stateid.stid.si_opaque.so_id);
cps->cp_stateid.cs_stid.si_opaque.so_id);
kfree(cps);
}
/*
@ -6386,12 +6386,12 @@ __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st,
if (cps_t) {
state = container_of(cps_t, struct nfs4_cpntf_state,
cp_stateid);
if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID) {
if (state->cp_stateid.cs_type != NFS4_COPYNOTIFY_STID) {
state = NULL;
goto unlock;
}
if (!clp)
refcount_inc(&state->cp_stateid.sc_count);
refcount_inc(&state->cp_stateid.cs_count);
else
_free_cpntf_state_locked(nn, state);
}

6
fs/nfsd/state.h
View File

@ -57,11 +57,11 @@ typedef struct {
} stateid_t;
typedef struct {
stateid_t stid;
stateid_t cs_stid;
#define NFS4_COPY_STID 1
#define NFS4_COPYNOTIFY_STID 2
unsigned char sc_type;
refcount_t sc_count;
unsigned char cs_type;
refcount_t cs_count;
} copy_stateid_t;
struct nfsd4_callback {