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Defined in 1 files as a function:

Referenced in 1 files:

Smatch caller information:

mm/swapfile.c alloc_swap_scan_cluster() -> cluster_is_usable()

Type Parameter Key Value
PARAM_VALUE 0 ci 4096-ptr_max
PARAM_VALUE 1 order 0-255
DATA_SOURCE 0 ci $1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &si->global_cluster_lock
HALF_LOCKED2 global &device_hotplug_lock
HALF_LOCKED2 global &system_transition_mutex

mm/swapfile.c cluster_alloc_swap_entry() -> cluster_is_usable()

Type Parameter Key Value
PARAM_VALUE 0 ci 4096-ptr_max
PARAM_VALUE 1 order 0-255
DATA_SOURCE 0 ci r swap_cluster_lock
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
LOCK2 &si->global_cluster_lock
HALF_LOCKED2 global &device_hotplug_lock
HALF_LOCKED2 global &system_transition_mutex
TYPE_LOCK (struct swap_info_struct)->global_cluster_lock

mm/swapfile.c cluster_reclaim_range() -> cluster_is_usable()

Type Parameter Key Value
PARAM_VALUE 0 ci 4096-ptr_max
PARAM_VALUE 0 ci->count 0-512
PARAM_VALUE 0 ci->lock.rlock.dep_map->name 0-255
PARAM_VALUE 0 ci->table 0,4096-ptr_max
PARAM_VALUE 1 order 0-255
CAPPED_DATA 0 ci->table 1
CAPPED_DATA 1 order 1
DATA_SOURCE 0 ci $1
DATA_SOURCE 1 order $3
RX_PATH
TASK_NOT_RUNNING
LOCK2 0 &ci->lock
HALF_LOCKED2 &si->global_cluster_lock
HALF_LOCKED2 global &device_hotplug_lock
HALF_LOCKED2 global &system_transition_mutex
TYPE_LOCK (struct swap_cluster_info)->lock

mm/swapfile.c swap_alloc_fast() -> cluster_is_usable()

Type Parameter Key Value
PARAM_VALUE 0 ci 4096-ptr_max
PARAM_VALUE 1 order 0-255
DATA_SOURCE 0 ci r swap_cluster_lock
DATA_SOURCE 1 order r folio_order
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING

mm/swapfile.c swap_alloc_hibernation_slot() -> cluster_is_usable()

Type Parameter Key Value
PARAM_VALUE 0 ci 4096-ptr_max
PARAM_VALUE 1 order 0
DATA_SOURCE 0 ci r swap_cluster_lock
PREEMPT_ADD <- disables preempt
RX_PATH
TASK_NOT_RUNNING
LOCK2 global &device_hotplug_lock
LOCK2 global &system_transition_mutex