folio_expected_ref_count identifier - Linux source code next-20260811 - Bootlin Elixir Cross Referencer

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linux

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FIXME
- FIXME
  - next-20260811

Documented in 1 files:

include/linux/mm.h, line 3019

Defined in 1 files as a function:

include/linux/mm.h, line 3052 (as a function)

Referenced in 8 files:

Smatch caller information:

mm/huge_memory.c __folio_split() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->host->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792,2776440803454029824,3228746867770966016,3502492669594062848,3526768263295340544,3559173554394271744,5000850239487131648,5583386343686406144,5817357685191483392-s64max
PARAM_VALUE	0	folio->mapping->host->i_sb->s_export_op->fh_to_parent	0,5297,148606482432692224,436469935444291584,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000,3511613614414655488-s64max
PARAM_VALUE	0	folio->mapping->host->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$0
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&anon_vma->root->rwsem
HALF_LOCKED2		&mapping->i_mmap_rwsem

mm/huge_memory.c folio_split_unmapped() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
DATA_SOURCE	0	folio	$0
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&drm->dmem->mutex

mm/huge_memory.c split_huge_pages_pid() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping	1-u64max
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	r folio_walk_start
LOCK2		&mm->mmap_lock
LOCK2		&split_debug_mutex
TYPE_LOCK		(struct mm_struct)->mmap_lock

mm/folio.c lru_cache_drain_for_folio() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->page.flags.f	0-18446744073709551614
DATA_SOURCE	0	folio	$0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING

mm/folio.c lru_cache_drain_for_folio() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->page.flags.f	0-18446744073709551614
DATA_SOURCE	0	folio	$0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING

mm/vmscan.c shrink_folio_list() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping	1-u64max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	r lru_to_folio
RX_PATH
TASK_NOT_RUNNING

kernel/events/uprobes.c __uprobe_write() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping	1-u64max
DATA_SOURCE	0	folio	$2
RX_PATH
TASK_NOT_RUNNING
UNITS	0	folio	unit_page
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&uprobe->register_rwsem

mm/migrate.c __buffer_migrate_folio() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
DATA_SOURCE	0	folio	$2
RX_PATH
TASK_NOT_RUNNING

mm/migrate.c __migrate_folio() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$2
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING

mm/migrate.c folio_migrate_mapping() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$2
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&ai->migrate_lock
HALF_LOCKED2		&ctx->ring_lock

mm/migrate.c migrate_huge_page_move_mapping() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
DATA_SOURCE	0	folio	$2
RX_PATH
TASK_NOT_RUNNING

mm/khugepaged.c __collapse_huge_page_isolate() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->host->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
LOCK2		&vma->anon_vma->root->rwsem
LOCK2		pte_ptl
HALF_LOCKED2		&mm->mmap_lock
TYPE_LOCK		(struct anon_vma)->rwsem
TYPE_LOCK		(struct mm_struct)->mmap_lock

mm/khugepaged.c collapse_scan_file() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->page._refcount.counter	0-s32max
CAPPED_DATA	0	folio	1
RX_PATH
TASK_NOT_RUNNING
LOCK2		rcu_read
HALF_LOCKED2		&mm->mmap_lock

mm/khugepaged.c collapse_scan_pmd() -> folio_expected_ref_count()

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

mm/memfd.c memfd_folio_has_extra_refs() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
DATA_SOURCE	0	folio	$0
PREEMPT_ADD
LOCK2		&inode->i_rwsem
LOCK2		irq
HALF_LOCKED2		&((&xas)->xa)->xa_lock
HALF_LOCKED2		&(xas->xa)->xa_lock
HALF_LOCKED2		&session->mutex
HALF_LOCKED2		_T->lock
TYPE_LOCK		(struct inode)->i_rwsem

fs/jfs/jfs_metapage.c metapage_migrate_folio() -> folio_expected_ref_count()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	folio->mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	folio->private	1-u64max
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$2
RX_PATH
TASK_NOT_RUNNING