diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/lov/lov_pool.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/lov/lov_pool.c | 49 |
1 files changed, 25 insertions, 24 deletions
diff --git a/drivers/staging/lustre/lustre/lov/lov_pool.c b/drivers/staging/lustre/lustre/lov/lov_pool.c index b43ce6cd64c2..9ae1d6f42d6e 100644 --- a/drivers/staging/lustre/lustre/lov/lov_pool.c +++ b/drivers/staging/lustre/lustre/lov/lov_pool.c @@ -64,7 +64,7 @@ void lov_pool_putref(struct pool_desc *pool) if (atomic_dec_and_test(&pool->pool_refcount)) { LASSERT(hlist_unhashed(&pool->pool_hash)); LASSERT(list_empty(&pool->pool_list)); - LASSERT(pool->pool_debugfs_entry == NULL); + LASSERT(!pool->pool_debugfs_entry); lov_ost_pool_free(&(pool->pool_rr.lqr_pool)); lov_ost_pool_free(&(pool->pool_obds)); kfree(pool); @@ -152,9 +152,8 @@ struct cfs_hash_ops pool_hash_operations = { }; -/* ifdef needed for liblustre support */ /* - * pool /proc seq_file methods + * pool debugfs seq_file methods */ /* * iterator is used to go through the target pool entries @@ -174,7 +173,7 @@ static void *pool_proc_next(struct seq_file *s, void *v, loff_t *pos) struct pool_iterator *iter = (struct pool_iterator *)s->private; int prev_idx; - LASSERTF(iter->magic == POOL_IT_MAGIC, "%08X", iter->magic); + LASSERTF(iter->magic == POOL_IT_MAGIC, "%08X\n", iter->magic); /* test if end of file */ if (*pos >= pool_tgt_count(iter->pool)) @@ -204,7 +203,8 @@ static void *pool_proc_start(struct seq_file *s, loff_t *pos) 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 */ + * find pool to dec ref + */ lov_pool_putref(pool); return NULL; } @@ -217,7 +217,8 @@ static void *pool_proc_start(struct seq_file *s, loff_t *pos) iter->idx = 0; /* we use seq_file private field to memorized iterator so - * we can free it at stop() */ + * we can free it at stop() + */ /* /!\ do not forget to restore it to pool before freeing it */ s->private = iter; if (*pos > 0) { @@ -226,8 +227,8 @@ static void *pool_proc_start(struct seq_file *s, loff_t *pos) i = 0; do { - ptr = pool_proc_next(s, &iter, &i); - } while ((i < *pos) && (ptr != NULL)); + ptr = pool_proc_next(s, &iter, &i); + } while ((i < *pos) && ptr); return ptr; } return iter; @@ -239,15 +240,16 @@ static void pool_proc_stop(struct seq_file *s, void *v) /* in some cases stop() method is called 2 times, without * calling start() method (see seq_read() from fs/seq_file.c) - * we have to free only if s->private is an iterator */ + * we have to free only if s->private is an iterator + */ if ((iter) && (iter->magic == POOL_IT_MAGIC)) { /* we restore s->private so next call to pool_proc_start() - * will work */ + * will work + */ s->private = iter->pool; lov_pool_putref(iter->pool); kfree(iter); } - return; } static int pool_proc_show(struct seq_file *s, void *v) @@ -255,8 +257,8 @@ static int pool_proc_show(struct seq_file *s, void *v) struct pool_iterator *iter = (struct pool_iterator *)v; struct lov_tgt_desc *tgt; - LASSERTF(iter->magic == POOL_IT_MAGIC, "%08X", iter->magic); - LASSERT(iter->pool != NULL); + LASSERTF(iter->magic == POOL_IT_MAGIC, "%08X\n", iter->magic); + LASSERT(iter->pool); LASSERT(iter->idx <= pool_tgt_count(iter->pool)); down_read(&pool_tgt_rw_sem(iter->pool)); @@ -305,7 +307,7 @@ int lov_ost_pool_init(struct ost_pool *op, unsigned int count) init_rwsem(&op->op_rw_sem); op->op_size = count; op->op_array = kcalloc(op->op_size, sizeof(op->op_array[0]), GFP_NOFS); - if (op->op_array == NULL) { + if (!op->op_array) { op->op_size = 0; return -ENOMEM; } @@ -325,7 +327,7 @@ int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count) new_size = max(min_count, 2 * op->op_size); new = kcalloc(new_size, sizeof(op->op_array[0]), GFP_NOFS); - if (new == NULL) + if (!new) return -ENOMEM; /* copy old array to new one */ @@ -429,8 +431,7 @@ int lov_pool_new(struct obd_device *obd, char *poolname) INIT_HLIST_NODE(&new_pool->pool_hash); - /* we need this assert seq_file is not implemented for liblustre */ - /* get ref for /proc file */ + /* get ref for debugfs file */ lov_pool_getref(new_pool); new_pool->pool_debugfs_entry = ldebugfs_add_simple( lov->lov_pool_debugfs_entry, @@ -443,7 +444,7 @@ int lov_pool_new(struct obd_device *obd, char *poolname) lov_pool_putref(new_pool); } CDEBUG(D_INFO, "pool %p - proc %p\n", - new_pool, new_pool->pool_debugfs_entry); + new_pool, new_pool->pool_debugfs_entry); spin_lock(&obd->obd_dev_lock); list_add_tail(&new_pool->pool_list, &lov->lov_pool_list); @@ -487,7 +488,7 @@ int lov_pool_del(struct obd_device *obd, char *poolname) /* lookup and kill hash reference */ pool = cfs_hash_del_key(lov->lov_pools_hash_body, poolname); - if (pool == NULL) + if (!pool) return -ENOENT; if (!IS_ERR_OR_NULL(pool->pool_debugfs_entry)) { @@ -518,7 +519,7 @@ int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname) lov = &(obd->u.lov); pool = cfs_hash_lookup(lov->lov_pools_hash_body, poolname); - if (pool == NULL) + if (!pool) return -ENOENT; obd_str2uuid(&ost_uuid, ostname); @@ -564,7 +565,7 @@ int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname) lov = &(obd->u.lov); pool = cfs_hash_lookup(lov->lov_pools_hash_body, poolname); - if (pool == NULL) + if (!pool) return -ENOENT; obd_str2uuid(&ost_uuid, ostname); @@ -632,12 +633,12 @@ struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname) pool = NULL; if (poolname[0] != '\0') { pool = cfs_hash_lookup(lov->lov_pools_hash_body, poolname); - if (pool == NULL) + if (!pool) CWARN("Request for an unknown pool ("LOV_POOLNAMEF")\n", poolname); - if ((pool != NULL) && (pool_tgt_count(pool) == 0)) { + if (pool && (pool_tgt_count(pool) == 0)) { CWARN("Request for an empty pool ("LOV_POOLNAMEF")\n", - poolname); + poolname); /* pool is ignored, so we remove ref on it */ lov_pool_putref(pool); pool = NULL; |