Viewing: lod_pool.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
* Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* OST pool methods
*
* This file provides code related to the Logical Object Device (LOD)
* handling of OST Pools on the MDT. Pools are named lists of targets
* that allow userspace to group targets that share a particlar property
* together so that users or kernel helpers can make decisions about file
* allocation based on these properties. For example, pools could be
* defined based on fault domains (e.g. separate racks of server nodes) so
* that RAID-1 mirroring could select targets from independent fault
* domains, or pools could define target performance characteristics so
* that applicatins could select IOP-optimized storage or stream-optimized
* storage for a particular output file.
*
* This file handles creation, lookup, and removal of pools themselves, as
* well as adding and removing targets to pools. It also handles lprocfs
* display of configured pool. The pools are accessed by name in the pool
* hash, and are refcounted to ensure proper pool structure lifetimes.
*
* Author: Jacques-Charles LAFOUCRIERE <jc.lafoucriere@cea.fr>
* Author: Alex Lyashkov <Alexey.Lyashkov@Sun.COM>
* Author: Nathaniel Rutman <Nathan.Rutman@Sun.COM>
*/
#define DEBUG_SUBSYSTEM S_LOV
#include <linux/stringhash.h>
#include <linux/rhashtable.h>
#include <obd.h>
#include "lod_internal.h"
#define pool_tgt(_p, _i) OST_TGT(lu2lod_dev((_p)->pool_lobd->obd_lu_dev), \
(_p)->pool_obds.op_array[_i])
/**
* pool_getref() - Get a reference on the specified pool.
* @pool: pool descriptor on which to gain reference
*
* To ensure the pool descriptor is not freed before the caller is finished
* with it. Any process that is accessing @pool directly needs to hold
* reference on it, including /proc since a userspace thread may be holding
* the /proc file open and busy in the kernel.
*/
static void pool_getref(struct lod_pool_desc *pool)
{
CDEBUG(D_INFO, "pool %p\n", pool);
kref_get(&pool->pool_refcount);
}
static void lod_pool_putref_free(struct kref *kref)
{
struct lod_pool_desc *pool = container_of(kref, struct lod_pool_desc,
pool_refcount);
LASSERT(list_empty(&pool->pool_list));
LASSERT(pool->pool_proc_entry == NULL);
lu_tgt_pool_free(&(pool->pool_rr.lqr_pool));
lu_tgt_pool_free(&(pool->pool_obds));
OBD_FREE_RCU(pool, sizeof(*pool), pool_rcu);
EXIT;
}
/**
* lod_pool_putref() - Drop a reference on the specified pool and free its
* memory if needed.
* @pool: lod pool descriptor to drop reference on and possibly free
*
* One reference is held by the LOD OBD device while it is configured, from
* the time the configuration log defines the pool until the time when it is
* dropped when the LOD OBD is cleaned up or the pool is deleted. This means
* that the pool will not be freed while the LOD device is configured, unless
* it is explicitly destroyed by the sysadmin. The pool structure is freed
* after the last reference on the structure is released.
*/
void lod_pool_putref(struct lod_pool_desc *pool)
{
CDEBUG(D_INFO, "pool %p\n", pool);
kref_put(&pool->pool_refcount, lod_pool_putref_free);
}
static u32 pool_hashfh(const void *data, u32 len, u32 seed)
{
const char *pool_name = data;
return hashlen_hash(hashlen_string((void *)(unsigned long)seed,
pool_name));
}
static int pool_cmpfn(struct rhashtable_compare_arg *arg, const void *obj)
{
const struct lod_pool_desc *pool = obj;
const char *pool_name = arg->key;
return strcmp(pool_name, pool->pool_name);
}
static const struct rhashtable_params pools_hash_params = {
.key_len = 1, /* actually variable */
.key_offset = offsetof(struct lod_pool_desc, pool_name),
.head_offset = offsetof(struct lod_pool_desc, pool_hash),
.hashfn = pool_hashfh,
.obj_cmpfn = pool_cmpfn,
.automatic_shrinking = true,
};
/* Methods for /proc seq_file iteration of the defined pools. */
#define POOL_IT_MAGIC 0xB001CEA0
struct lod_pool_iterator {
unsigned int lpi_magic; /* POOL_IT_MAGIC */
unsigned int lpi_idx; /* from 0 to pool_tgt_size - 1 */
struct lod_pool_desc *lpi_pool;
};
/**
* pool_proc_next() - Return the next configured target within one pool for
* seq_file iteration.
* @seq: /proc sequence file iteration tracking structure
* @v: unused
* @pos: position within iteration; 0 to number of targets - 1
*
* Iterator is used to go through the target entries of a single pool
* (i.e. the list of OSTs configured for a named pool).
* lpi_idx is the current target index in the pool's op_array[].
*
* The return type is a void * because this function is one of the
* struct seq_operations methods and must match the function template.
*
* Return struct pool_iterator of the next pool descriptor
*/
static void *pool_proc_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct lod_pool_iterator *iter = seq->private;
int prev_idx;
LASSERTF(iter->lpi_magic == POOL_IT_MAGIC, "%08X\n", iter->lpi_magic);
(*pos)++;
/* test if end of file */
if (*pos > pool_tgt_count(iter->lpi_pool))
return NULL;
CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LIST_ASSERT, cfs_fail_val);
/* iterate to find a non empty entry */
prev_idx = iter->lpi_idx;
iter->lpi_idx++;
if (iter->lpi_idx >= pool_tgt_count(iter->lpi_pool)) {
iter->lpi_idx = prev_idx; /* we stay on the last entry */
return NULL;
}
/* return != NULL to continue */
return iter;
}
/**
* pool_proc_start() - Start seq_file iteration via /proc for a single pool.
* @seq: new sequence file structure to initialize
* @pos: initial target number at which to start iteration
*
* The @pos parameter may be non-zero, indicating that the iteration
* is starting at some offset in the target list. Use the seq_file
* private field to memorize the iterator so we can free it at stop().
* Need to restore the private pointer to the pool before freeing it.
*
* Return:
* * %initialized pool iterator private structure
* * %NULL if @pos exceeds the number of targets in @pool
* * %negative error number on failure
*/
static void *pool_proc_start(struct seq_file *seq, loff_t *pos)
{
struct lod_pool_desc *pool = seq->private;
struct lod_pool_iterator *iter;
pool_getref(pool);
if ((pool_tgt_count(pool) == 0) ||
(*pos >= pool_tgt_count(pool))) {
/* iter is not created, so stop() has no way to
* find pool to dec ref */
lod_pool_putref(pool);
return NULL;
}
OBD_ALLOC_PTR(iter);
if (iter == NULL)
return ERR_PTR(-ENOMEM);
iter->lpi_magic = POOL_IT_MAGIC;
iter->lpi_pool = pool;
iter->lpi_idx = 0;
seq->private = iter;
down_read(&pool_tgt_rw_sem(pool));
if (*pos > 0) {
loff_t i;
void *ptr;
i = 0;
do {
ptr = pool_proc_next(seq, &iter, &i);
} while ((i < *pos) && (ptr != NULL));
return ptr;
}
return iter;
}
/**
* pool_proc_stop() - Finish seq_file iteration for a single pool.
* @seq: sequence file structure to clean up
* @v: (unused)
*
* Once iteration has been completed, the pool_iterator struct must be
* freed, and the seq_file private pointer restored to the pool, as it
* was initially when pool_proc_start() was called.
*
* In some cases the stop() method may be called 2 times, without calling
* the start() method (see seq_read() from fs/seq_file.c). We have to free
* the private iterator struct only if seq->private points to the iterator.
*/
static void pool_proc_stop(struct seq_file *seq, void *v)
{
struct lod_pool_iterator *iter = seq->private;
if (iter != NULL && iter->lpi_magic == POOL_IT_MAGIC) {
up_read(&pool_tgt_rw_sem(iter->lpi_pool));
seq->private = iter->lpi_pool;
lod_pool_putref(iter->lpi_pool);
OBD_FREE_PTR(iter);
}
}
/**
* pool_proc_show() - Print out one target entry from the pool for seq_file
* iteration.
* @seq: new sequence file structure to initialize
* @v: (unused)
*
* The currently referenced pool target is given by op_array[lpi_idx].
*/
static int pool_proc_show(struct seq_file *seq, void *v)
{
struct lod_pool_iterator *iter = v;
struct lod_tgt_desc *tgt;
LASSERTF(iter->lpi_magic == POOL_IT_MAGIC, "%08X\n", iter->lpi_magic);
LASSERT(iter->lpi_pool != NULL);
LASSERT(iter->lpi_idx <= pool_tgt_count(iter->lpi_pool));
tgt = pool_tgt(iter->lpi_pool, iter->lpi_idx);
if (tgt != NULL)
seq_printf(seq, "%s\n", obd_uuid2str(&(tgt->ltd_uuid)));
return 0;
}
static const struct seq_operations pool_proc_ops = {
.start = pool_proc_start,
.next = pool_proc_next,
.stop = pool_proc_stop,
.show = pool_proc_show,
};
/**
* pool_proc_open() - Open a new /proc file for seq_file iteration of targets
* in one pool.
* @inode: inode to store iteration state for /proc
* @file: file descriptor to store iteration methods
*
* Initialize the seq_file private pointer to reference the pool.
*
* Return:
* * %0 for success
* * %negative error number on failure
*/
static int pool_proc_open(struct inode *inode, struct file *file)
{
int rc;
rc = seq_open(file, &pool_proc_ops);
if (!rc) {
struct seq_file *seq = file->private_data;
seq->private = pde_data(inode);
}
return rc;
}
static const struct proc_ops pool_proc_operations = {
.proc_open = pool_proc_open,
.proc_read = seq_read,
.proc_lseek = seq_lseek,
.proc_release = seq_release,
};
static void pools_hash_exit(void *vpool, void *data)
{
struct lod_pool_desc *pool = vpool;
lod_pool_putref(pool);
}
int lod_pool_hash_init(struct rhashtable *tbl)
{
return rhashtable_init(tbl, &pools_hash_params);
}
void lod_pool_hash_destroy(struct rhashtable *tbl)
{
rhashtable_free_and_destroy(tbl, pools_hash_exit, NULL);
}
bool lod_pool_exists(struct lod_device *lod, char *poolname)
{
struct lod_pool_desc *pool;
rcu_read_lock();
pool = rhashtable_lookup(&lod->lod_pools_hash_body,
poolname,
pools_hash_params);
rcu_read_unlock();
return pool != NULL;
}
struct lod_pool_desc *lod_pool_find(struct lod_device *lod, const char *poolname)
{
struct lod_pool_desc *pool;
rcu_read_lock();
pool = rhashtable_lookup(&lod->lod_pools_hash_body,
poolname,
pools_hash_params);
if (pool && !kref_get_unless_zero(&pool->pool_refcount))
pool = NULL;
rcu_read_unlock();
return pool;
}
static int lod_ost_pool_weights_seq_show(struct seq_file *m, void *data)
{
struct lod_pool_desc *pool = m->private;
struct lod_device *lod = lu2lod_dev(pool->pool_lobd->obd_lu_dev);
return lod_tgt_weights_seq_show(m, lod, &pool->pool_obds, false);
}
static ssize_t
lod_ost_pool_weights_seq_write(struct file *file, const char __user *buf,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct lod_pool_desc *pool = m->private;
struct lod_device *lod = lu2lod_dev(pool->pool_lobd->obd_lu_dev);
return lod_tgt_weights_seq_write(m, buf, count, lod, &pool->pool_obds,
false);
}
LDEBUGFS_SEQ_FOPS(lod_ost_pool_weights);
static struct ldebugfs_vars ldebugfs_lod_pool_vars[] = {
{ .name = "qos_ost_weights",
.fops = &lod_ost_pool_weights_fops,
.proc_mode = 0444 },
{ 0 }
};
/**
* lod_pool_new() - Allocate a new pool for the specified device.
* @obd: Lustre OBD device on which to add a pool iterator
* @poolname: the name of the pool to be created
*
* Allocate a new pool_desc structure for the specified \a new_pool
* device to create a pool with the given \a poolname. The new pool
* structure is created with a single reference, and is freed when the
* reference count drops to zero.
*
* Return:
* * %0 in case of success
* * %negative error code in case of error
*/
int lod_pool_new(struct obd_device *obd, char *poolname)
{
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct lod_pool_desc *new_pool;
int rc;
ENTRY;
if (strlen(poolname) > LOV_MAXPOOLNAME)
RETURN(-ENAMETOOLONG);
OBD_ALLOC_PTR(new_pool);
if (new_pool == NULL)
RETURN(-ENOMEM);
strscpy(new_pool->pool_name, poolname, sizeof(new_pool->pool_name));
new_pool->pool_spill_target[0] = '\0';
atomic_set(&new_pool->pool_spill_hit, 0);
new_pool->pool_lobd = obd;
kref_init(&new_pool->pool_refcount);
rc = lu_tgt_pool_init(&new_pool->pool_obds, 0);
if (rc)
GOTO(out_free_pool, rc);
lu_qos_rr_init(&new_pool->pool_rr);
rc = lu_tgt_pool_init(&new_pool->pool_rr.lqr_pool, 0);
if (rc)
GOTO(out_free_pool_obds, rc);
#ifdef CONFIG_PROC_FS
pool_getref(new_pool);
new_pool->pool_proc_entry = lprocfs_add_simple(lod->lod_pool_proc_entry,
poolname, new_pool,
&pool_proc_operations);
if (IS_ERR(new_pool->pool_proc_entry)) {
CDEBUG(D_CONFIG, "%s: cannot add proc entry "LOV_POOLNAMEF"\n",
obd->obd_name, poolname);
new_pool->pool_proc_entry = NULL;
lod_pool_putref(new_pool);
}
pool_getref(new_pool);
new_pool->pool_spill_proc_entry =
lprocfs_register(poolname, lod->lod_spill_proc_entry,
lprocfs_lod_spill_vars, new_pool);
if (IS_ERR(new_pool->pool_spill_proc_entry)) {
rc = PTR_ERR(new_pool->pool_spill_proc_entry);
new_pool->pool_spill_proc_entry = NULL;
lod_pool_putref(new_pool);
}
CDEBUG(D_INFO, "pool %p - proc %p\n", new_pool,
new_pool->pool_proc_entry);
#endif
spin_lock(&obd->obd_dev_lock);
list_add_tail(&new_pool->pool_list, &lod->lod_pool_list);
lod->lod_pool_count++;
spin_unlock(&obd->obd_dev_lock);
/* Add to hash table only when it is fully ready. */
rc = rhashtable_lookup_insert_fast(&lod->lod_pools_hash_body,
&new_pool->pool_hash,
pools_hash_params);
if (rc) {
if (rc != -EEXIST)
/*
* Hide -E2BIG and -EBUSY which
* are not helpful.
*/
rc = -ENOMEM;
GOTO(out_err, rc);
}
new_pool->pool_debugfs = debugfs_create_dir(poolname,
lod->lod_pool_debugfs);
ldebugfs_add_vars(new_pool->pool_debugfs, ldebugfs_lod_pool_vars,
new_pool);
CDEBUG(D_CONFIG, LOV_POOLNAMEF" is pool #%d\n",
poolname, lod->lod_pool_count);
RETURN(0);
out_err:
spin_lock(&obd->obd_dev_lock);
list_del_init(&new_pool->pool_list);
lod->lod_pool_count--;
spin_unlock(&obd->obd_dev_lock);
lprocfs_remove(&new_pool->pool_spill_proc_entry);
lprocfs_remove(&new_pool->pool_proc_entry);
lu_tgt_pool_free(&new_pool->pool_rr.lqr_pool);
out_free_pool_obds:
lu_tgt_pool_free(&new_pool->pool_obds);
out_free_pool:
OBD_FREE_PTR(new_pool);
return rc;
}
/**
* lod_pool_del() - Remove the named pool from the OBD device.
* @obd: OBD device on which pool was previously created
* @poolname: name of pool to remove from \a obd
*
* Return:
* * %0 on successfully removing the pool
* * %negative error numbers for failures
*/
int lod_pool_del(struct obd_device *obd, char *poolname)
{
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct lod_pool_desc *pool;
ENTRY;
/* lookup and kill hash reference */
rcu_read_lock();
pool = rhashtable_lookup(&lod->lod_pools_hash_body, poolname,
pools_hash_params);
if (pool && rhashtable_remove_fast(&lod->lod_pools_hash_body,
&pool->pool_hash,
pools_hash_params) != 0)
pool = NULL;
rcu_read_unlock();
if (!pool)
RETURN(-ENOENT);
debugfs_remove_recursive(pool->pool_debugfs);
if (pool->pool_proc_entry != NULL) {
CDEBUG(D_INFO, "proc entry %p\n", pool->pool_proc_entry);
lprocfs_remove(&pool->pool_proc_entry);
lod_pool_putref(pool);
}
if (pool->pool_spill_proc_entry != NULL) {
CDEBUG(D_INFO, "proc entry %p\n", pool->pool_spill_proc_entry);
lprocfs_remove(&pool->pool_spill_proc_entry);
lod_pool_putref(pool);
}
spin_lock(&obd->obd_dev_lock);
list_del_init(&pool->pool_list);
lod->lod_pool_count--;
spin_unlock(&obd->obd_dev_lock);
/* release last reference */
lod_pool_putref(pool);
RETURN(0);
}
/**
* lod_pool_add() - Add a single target device to the named pool.
* @obd: OBD device on which to add the pool
* @poolname: name of the pool to which to add the target @ostname
* @ostname: name of the target device to be added
*
* Add the target specified by @ostname to the specified @poolname.
*
* Return:
* * %0 if @ostname was (previously) added to the named pool
* * %negative error number on failure
*/
int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname)
{
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct obd_uuid ost_uuid;
struct lod_pool_desc *pool;
struct lu_tgt_desc *tgt;
int rc = -EINVAL;
ENTRY;
pool = lod_pool_find(lod, poolname);
if (!pool)
RETURN(-ENOENT);
obd_str2uuid(&ost_uuid, ostname);
/* search ost in lod array */
lod_getref(&lod->lod_ost_descs);
lod_foreach_ost(lod, tgt) {
if (obd_uuid_equals(&ost_uuid, &tgt->ltd_uuid)) {
rc = 0;
break;
}
}
if (rc)
GOTO(out, rc);
rc = lu_tgt_pool_add(&pool->pool_obds, tgt->ltd_index,
lod->lod_ost_count);
if (rc)
GOTO(out, rc);
set_bit(LQ_DIRTY, &pool->pool_rr.lqr_flags);
CDEBUG(D_CONFIG, "Added %s to "LOV_POOLNAMEF" as member %d\n",
ostname, poolname, pool_tgt_count(pool));
EXIT;
out:
lod_putref(lod, &lod->lod_ost_descs);
lod_pool_putref(pool);
return rc;
}
/**
* lod_pool_remove() - Remove the named target from the specified pool.
* @obd: OBD device from which to remove @poolname
* @poolname: name of the pool to be changed
* @ostname: name of the target to remove from @poolname
*
* Remove one target named @ostname from @poolname. The @ostname
* is searched for in the lod_device lod_ost_bitmap array, to ensure the
* specified name actually exists in the pool.
*
* Return:
* * %0 on successfully removing @ostname from the pool
* * %negative number on error (e.g. @ostname not in pool)
*/
int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname)
{
struct lod_device *lod = lu2lod_dev(obd->obd_lu_dev);
struct lu_tgt_desc *ost;
struct obd_uuid ost_uuid;
struct lod_pool_desc *pool;
int rc = -EINVAL;
ENTRY;
/* lookup and kill hash reference */
pool = lod_pool_find(lod, poolname);
if (!pool)
RETURN(-ENOENT);
obd_str2uuid(&ost_uuid, ostname);
lod_getref(&lod->lod_ost_descs);
lod_foreach_ost(lod, ost) {
if (obd_uuid_equals(&ost_uuid, &ost->ltd_uuid)) {
rc = 0;
break;
}
}
/* test if ost found in lod array */
if (rc)
GOTO(out, rc);
lu_tgt_pool_remove(&pool->pool_obds, ost->ltd_index);
set_bit(LQ_DIRTY, &pool->pool_rr.lqr_flags);
CDEBUG(D_CONFIG, "%s removed from "LOV_POOLNAMEF"\n", ostname,
poolname);
EXIT;
out:
lod_putref(lod, &lod->lod_ost_descs);
lod_pool_putref(pool);
return rc;
}
/**
* lod_check_index_in_pool() - Check if the specified target exists in the pool
* @idx: Target index to check
* @pool: Pool in which to check if target is added.
*
* The caller may not have a reference on @pool if it got the pool without
* calling lod_find_pool() (e.g. directly from the lod pool list)
*
* Return:
* * %0 successfully found index in @pool
* * %negative error if device not found in @pool
*/
int lod_check_index_in_pool(__u32 idx, struct lod_pool_desc *pool)
{
int rc;
pool_getref(pool);
rc = lu_tgt_check_index(idx, &pool->pool_obds);
lod_pool_putref(pool);
return rc;
}
/**
* lod_find_pool() - Find the pool descriptor for the specified pool and return
* it with a
* reference to the caller if found.
* @lod: LOD on which the pools are configured
* @poolname: NUL-terminated name of the pool
*
* Return:
* * %pointer to pool descriptor on success
* * %NULL if @poolname could not be found or poolname is empty
*/
struct lod_pool_desc *lod_find_pool(struct lod_device *lod, const char *poolname)
{
struct lod_pool_desc *pool;
if (poolname[0] == '\0' || lov_pool_is_reserved(poolname))
return NULL;
pool = lod_pool_find(lod, poolname);
if (!pool)
CDEBUG(D_CONFIG,
"%s: request for an unknown pool (" LOV_POOLNAMEF ")\n",
lod->lod_child_exp->exp_obd->obd_name, poolname);
if (pool != NULL && pool_tgt_count(pool) == 0) {
CDEBUG(D_CONFIG, "%s: request for an empty pool ("
LOV_POOLNAMEF")\n",
lod->lod_child_exp->exp_obd->obd_name, poolname);
/* pool is ignored, so we remove ref on it */
lod_pool_putref(pool);
pool = NULL;
}
return pool;
}
void lod_spill_target_refresh(const struct lu_env *env, struct lod_device *lod,
struct lod_pool_desc *pool)
{
__u64 avail_bytes = 0, total_bytes = 0;
struct lu_tgt_pool *osts;
int i;
if (ktime_get_seconds() < pool->pool_spill_expire)
return;
if (pool->pool_spill_threshold_pct == 0)
return;
lod_qos_statfs_update(env, lod, &lod->lod_ost_descs);
down_write(&pool_tgt_rw_sem(pool));
if (ktime_get_seconds() < pool->pool_spill_expire)
goto out_sem;
pool->pool_spill_expire = ktime_get_seconds() +
lod->lod_ost_descs.ltd_lov_desc.ld_qos_maxage;
osts = &(pool->pool_obds);
for (i = 0; i < osts->op_count; i++) {
int idx = osts->op_array[i];
struct lod_tgt_desc *tgt;
struct obd_statfs *sfs;
if (!test_bit(idx, lod->lod_ost_bitmap))
continue;
tgt = OST_TGT(lod, idx);
if (!tgt->ltd_active)
continue;
sfs = &tgt->ltd_statfs;
avail_bytes += sfs->os_bavail * sfs->os_bsize;
total_bytes += sfs->os_blocks * sfs->os_bsize;
}
if (total_bytes - avail_bytes >=
total_bytes * pool->pool_spill_threshold_pct / 100)
pool->pool_spill_is_active = true;
else
pool->pool_spill_is_active = false;
out_sem:
up_write(&pool_tgt_rw_sem(pool));
}
/* XXX: consider a better schema to detect loops */
void lod_check_and_spill_pool(const struct lu_env *env, struct lod_device *lod,
char **poolname)
{
struct lod_pool_desc *pool;
if (!poolname || !*poolname || (*poolname)[0] == '\0')
return;
repeat:
pool = lod_pool_find(lod, *poolname);
if (!pool)
return;
lod_spill_target_refresh(env, lod, pool);
if (pool->pool_spill_is_active) {
lod_set_pool(poolname, pool->pool_spill_target);
atomic_inc(&pool->pool_spill_hit);
lod_pool_putref(pool);
goto repeat;
}
lod_pool_putref(pool);
}
