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Defined in 2 files as a function:

Referenced in 9 files:

Smatch caller information:

mm/madvise.c madvise_cold_or_pageout_pte_range() -> is_huge_zero_pmd()

Type Parameter Key Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock

mm/huge_memory.c __split_huge_pmd_locked() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd r pmdp_huge_clear_flush
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &vma->vm_private_data->rw_sema

mm/huge_memory.c __split_huge_pmd_locked() -> is_huge_zero_pmd()

Type Parameter Key Value
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &vma->vm_private_data->rw_sema

mm/huge_memory.c change_huge_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &dst_mm->mmap_lock
HALF_LOCKED2 &mm->mmap_lock

mm/huge_memory.c copy_huge_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd r pmdp_get_lockless
RX_PATH
TASK_NOT_RUNNING
LOCK2 &mm->mmap_lock
LOCK2 &oldmm->mmap_lock
TYPE_LOCK (struct mm_struct)->mmap_lock

mm/huge_memory.c copy_huge_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
PREEMPT_ADD <- disables preempt
RX_PATH
TASK_NOT_RUNNING
LOCK2 &mm->mmap_lock
LOCK2 &oldmm->mmap_lock
LOCK2 src_ptl
TYPE_LOCK (struct mm_struct)->mmap_lock

mm/huge_memory.c do_huge_pmd_wp_page() -> is_huge_zero_pmd()

Type Parameter Key Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 &pool->lock

mm/huge_memory.c has_deposited_pgtable() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd $1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock

mm/huge_memory.c insert_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
PREEMPT_ADD <- disables preempt
RX_PATH
TASK_NOT_RUNNING

mm/huge_memory.c madvise_free_huge_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock

mm/huge_memory.c move_pages_huge_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
LOCK2 &ctx->map_changing_lock
TYPE_LOCK (struct userfaultfd_ctx)->map_changing_lock

mm/pagewalk.c folio_walk_start() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd r pmdp_get
PREEMPT_ADD <- disables preempt
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 &split_debug_mutex
HALF_LOCKED2 global &ksm_thread_mutex

fs/proc/task_mmu.c pagemap_thp_category() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd $3
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock

mm/migrate_device.c migrate_vma_insert_huge_pmd_page() -> is_huge_zero_pmd()

Type Parameter Key Value
PREEMPT_ADD <- disables preempt
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &drm->dmem->mutex

mm/migrate_device.c migrate_vma_insert_page() -> is_huge_zero_pmd()

Type Parameter Key Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &drm->dmem->mutex

mm/vmscan.c get_pmd_pfn() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd $0
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 ptl

mm/vmscan.c walk_pmd_range() -> is_huge_zero_pmd()

Type Parameter Key Value
DATA_SOURCE 0 pmd r pmdp_get_lockless
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock

mm/gup.c follow_huge_pmd() -> is_huge_zero_pmd()

Type Parameter Key Value
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock

mm/mlock.c mlock_pte_range() -> is_huge_zero_pmd()

Type Parameter Key Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2 &mm->mmap_lock