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

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linux

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FIXME
- FIXME
  - next-20260811

Defined in 1 files as a function:

include/linux/page_ref.h, line 143 (as a function)

Referenced in 8 files:

Smatch caller information:

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

Type	Parameter	Key	Value
PARAM_VALUE	1	nr	511
DATA_SOURCE	0	folio	r _compound_head
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&vma->vm_private_data->rw_sema

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

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	1	nr	511
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	r _compound_head
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&vma->vm_private_data->rw_sema

mm/shmem.c shmem_add_to_page_cache() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$0
DATA_SOURCE	1	nr	r folio_nr_pages
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&session->mutex
HALF_LOCKED2		&state.ctx->map_changing_lock
HALF_LOCKED2		_T->lock

mm/shmem.c shmem_replace_folio() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
DATA_SOURCE	0	folio	r shmem_alloc_folio
DATA_SOURCE	1	nr	r folio_nr_pages
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL

mm/filemap.c __filemap_add_folio() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
DATA_SOURCE	0	folio	$1
DATA_SOURCE	1	nr	r folio_nr_pages
NOSPEC	0	folio->mapping->writeback_index
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	0	folio->mapping->writeback_index	0-524287[c]

mm/filemap.c filemap_map_folio_range() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping	4096-ptr_max
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	0	folio->index	0-4503599627370495[c]
LOCK2		rcu_read
LOCK2		vmf->ptl
HALF_LOCKED2		&mm->mmap_lock

mm/filemap.c filemap_map_folio_range() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping	4096-ptr_max
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	0	folio	1
DATA_SOURCE	0	folio	$1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	0	folio->index	0-4503599627370495[c]
LOCK2		rcu_read
LOCK2		vmf->ptl
HALF_LOCKED2		&mm->mmap_lock

mm/memory.c copy_present_ptes() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
CAPPED_DATA	0	folio	1
CAPPED_DATA	1	nr	1
DATA_SOURCE	0	folio	r _compound_head
DATA_SOURCE	1	nr	r folio_pte_batch_flags
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
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 do_swap_page() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
CAPPED_DATA	0	folio	1
CAPPED_DATA	1	nr	1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2		vmf->ptl
HALF_LOCKED2		&mm->mmap_lock

mm/memory.c finish_fault() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	*folio->_mm_id	0-4294967295
CAPPED_DATA	1	nr	1
DATA_SOURCE	0	folio	r _compound_head
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	0	folio	unit_page
UNITS	1	nr	unit_page
LOCK2		vmf->ptl

mm/memory.c map_anon_folio_pte_nopf() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
DATA_SOURCE	0	folio	$0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&vma->anon_vma->root->rwsem
HALF_LOCKED2		pmd_ptl
HALF_LOCKED2		vmf->ptl

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

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	1	nr	1024
DATA_SOURCE	0	folio	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&inode->i_rwsem
HALF_LOCKED2		&pool->lock

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

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
CAPPED_DATA	1	nr	1
DATA_SOURCE	0	folio	$0
DATA_SOURCE	1	nr	$1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	1	nr	2-262143[c]
UNITS	1	nr	unit_page
HALF_LOCKED2		ptl
HALF_LOCKED2		rcu_read

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

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
CAPPED_DATA	1	nr	1
DATA_SOURCE	0	folio	$0
DATA_SOURCE	1	nr	$1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	1	nr	2-262143[c]
UNITS	1	nr	unit_page
HALF_LOCKED2		ptl
HALF_LOCKED2		rcu_read

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

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
CAPPED_DATA	1	nr	1
DATA_SOURCE	0	folio	$0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	1	nr	2049-268434432[c]
HALF_LOCKED2		ptl
HALF_LOCKED2		rcu_read

mm/gup.c try_grab_folio_fast() -> folio_ref_add()

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
DATA_SOURCE	0	folio	r try_get_folio
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2		flags
HALF_LOCKED2		rcu_read

mm/migrate.c __folio_migrate_mapping() -> folio_ref_add()

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	$1
DATA_SOURCE	1	nr	r folio_nr_pages
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	0	folio->index
LOCK2		irq
HALF_LOCKED2		&((&xas)->xa)->xa_lock

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

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	$1
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	0	folio->index
LOCK2		&((&xas)->xa)->xa_lock
LOCK2		irq

mm/khugepaged.c collapse_file() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping	4096-ptr_max
PARAM_VALUE	0	folio->mapping->host	0,4096-ptr_max
PARAM_VALUE	1	nr	511
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2		&((&xas)->xa)->xa_lock
LOCK2		irq
HALF_LOCKED2		&mm->mmap_lock

mm/swap_state.c __swap_cache_do_add_folio() -> folio_ref_add()

Type	Parameter	Key	Value
PARAM_VALUE	0	folio	4096-ptr_max
PARAM_VALUE	0	folio->mapping->host->i_op->get_offset_ctx	0,2606890545167454208
PARAM_VALUE	0	folio->mapping->host->i_op->readlink	0,1728600404483375104,2832489546165891072,2874824064778891264,3069732422725099520,4516337085607264256
PARAM_VALUE	0	folio->mapping->host->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648,2704,2712
PARAM_VALUE	0	folio->mapping->host->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-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
DATA_SOURCE	0	folio	$1
DATA_SOURCE	1	nr	r folio_nr_pages
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	0	folio->index
HALF_LOCKED2		&ci->lock