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Documented in 1 files:

Defined in 1 files as a function:

Referenced in 6 files:

Smatch caller information:

mm/huge_memory.c __folio_rmap_sanity_checks() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 &oldmm->mmap_lock
HALF_LOCKED2 dst_ptl
HALF_LOCKED2 src_ptl

mm/gup_test.c folio_is_longterm_pinnable() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0

mm/rmap.c __folio_rmap_sanity_checks() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
BUF_SIZE 0 folio (-1)-s32max
BUF_SIZE 0 folio (-1)-s32max
DATA_SOURCE 0 folio $0
NOSPEC 0 folio->mapping->writeback_index
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
USER_DATA 0 folio->mapping->writeback_index 0-524287[c]
NO_OVERFLOW_SIMPLE 0 folio->index
NO_OVERFLOW_SIMPLE 0 folio->mapping->host->i_size
UNITS 0 folio unit_page
HALF_LOCKED2 0 &folio->private->lock

mm/hugetlb.c folio_is_longterm_pinnable() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0
RX_PATH
TASK_NOT_RUNNING
LOCK2 global &hugetlb_lock
LOCK2 irq

mm/ksm.c __folio_rmap_sanity_checks() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0
LOCK2 &mm->mmap_lock
LOCK2 global &ksm_thread_mutex
TYPE_LOCK (struct mm_struct)->mmap_lock

mm/migrate_device.c __folio_rmap_sanity_checks() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0
RX_PATH
TASK_NOT_RUNNING
UNITS 0 folio unit_page
LOCK2 ptl
HALF_LOCKED2 &mm->mmap_lock

mm/memory.c __folio_rmap_sanity_checks() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0
RX_PATH
TASK_NOT_RUNNING
LOCK2 &mm->mmap_lock
LOCK2 &oldmm->mmap_lock
LOCK2 dst_ptl
LOCK2 rcu_read
LOCK2 src_ptl
TYPE_LOCK (struct mm_struct)->mmap_lock

mm/memory.c insert_page_into_pte_locked() -> is_zero_folio()

Type Parameter Key Value
DATA_SOURCE 0 folio r _compound_head
RX_PATH
TASK_NOT_RUNNING
UNITS 0 folio unit_page
HALF_LOCKED2 pte_lock

mm/memory.c validate_page_before_insert() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio r _compound_head
RX_PATH
TASK_NOT_RUNNING
UNITS 0 folio unit_page
HALF_LOCKED2 pte_lock

block/bio.c bio_free_folios() -> is_zero_folio()

Type Parameter Key Value
DATA_SOURCE 0 folio r bvec_folio
RX_PATH
TASK_NOT_RUNNING

mm/gup.c folio_add_pin() -> is_zero_folio()

Type Parameter Key Value
DATA_SOURCE 0 folio $0
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &inode->i_rwsem
HALF_LOCKED2 &pool->lock

mm/gup.c folio_is_longterm_pinnable() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
CAPPED_DATA 0 folio 1
DATA_SOURCE 0 folio $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 flags

mm/gup.c gup_put_folio() -> is_zero_folio()

Type Parameter Key Value
DATA_SOURCE 0 folio $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
UNITS 0 folio unit_page
HALF_LOCKED2 flags
HALF_LOCKED2 rcu_read

mm/gup.c try_grab_folio() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 4096-ptr_max
DATA_SOURCE 0 folio $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 ptl
HALF_LOCKED2 rcu_read

mm/migrate.c __add_folio_for_migration() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 1-u64max
DATA_SOURCE 0 folio $0
LOCK2 &mm->mmap_lock
TYPE_LOCK (struct mm_struct)->mmap_lock

mm/migrate.c do_pages_stat_array() -> is_zero_folio()

Type Parameter Key Value
PARAM_VALUE 0 folio 1-u64max
DATA_SOURCE 0 folio r folio_walk_start
LOCK2 &mm->mmap_lock
TYPE_LOCK (struct mm_struct)->mmap_lock