static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
int i;
int rv;
int len;
int npools;
int *nthreads;
mutex_lock(&nfsd_mutex);
npools = nfsd_nrpools();
if (npools == 0) {
mutex_unlock(&nfsd_mutex);
strcpy(buf, "0\n");
return strlen(buf);
}
nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
rv = -ENOMEM;
if (nthreads == NULL)
goto out_free;
if (size > 0) {
for (i = 0; i < npools; i++) {
rv = get_int(&mesg, &nthreads[i]);
if (rv == -ENOENT)
break;
if (rv)
goto out_free;
rv = -EINVAL;
if (nthreads[i] < 0)
goto out_free;
}
rv = nfsd_set_nrthreads(i, nthreads);
if (rv)
goto out_free;
}
rv = nfsd_get_nrthreads(npools, nthreads);
if (rv)
goto out_free;
mesg = buf;
size = SIMPLE_TRANSACTION_LIMIT;
for (i = 0; i < npools && size > 0; i++) {
snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
len = strlen(mesg);
size -= len;
mesg += len;
}
rv = mesg - buf;
out_free:
kfree(nthreads);
mutex_unlock(&nfsd_mutex);
return rv;
}
static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
{
/* if size > 0, look for an array of number of threads per node
* and apply them then write out number of threads per node as reply
*/
char *mesg = buf;
int i;
int rv;
int len;
int npools = nfsd_nrpools();
int *nthreads;
if (npools == 0) {
/*
* NFS is shut down. The admin can start it by
* writing to the threads file but NOT the pool_threads
* file, sorry. Report zero threads.
*/
strcpy(buf, "0\n");
return strlen(buf);
}
nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
if (nthreads == NULL)
return -ENOMEM;
if (size > 0) {
for (i = 0; i < npools; i++) {
rv = get_int(&mesg, &nthreads[i]);
if (rv == -ENOENT)
break; /* fewer numbers than pools */
if (rv)
goto out_free; /* syntax error */
rv = -EINVAL;
if (nthreads[i] < 0)
goto out_free;
}
rv = nfsd_set_nrthreads(i, nthreads);
if (rv)
goto out_free;
}
rv = nfsd_get_nrthreads(npools, nthreads);
if (rv)
goto out_free;
mesg = buf;
size = SIMPLE_TRANSACTION_LIMIT;
for (i = 0; i < npools && size > 0; i++) {
snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
len = strlen(mesg);
size -= len;
mesg += len;
}
return (mesg-buf);
out_free:
kfree(nthreads);
return rv;
}
