splice_file_range identifier - Linux source code next-20260811

Projects

linux

Versions

FIXME
- FIXME
  - next-20260811

Documented in 1 files:

fs/splice.c, line 1233

Defined in 1 files as a prototype:

include/linux/splice.h, line 88 (as a prototype)

Defined in 1 files as a function:

fs/splice.c, line 1248 (as a function)

Referenced in 3 files:

Smatch caller information:

fs/nfs/nfs4file.c splice_copy_file_range() -> splice_file_range()

Type	Parameter	Key	Value
PARAM_VALUE	0	in	4096-ptr_max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_inode	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,4672,148606482432692224,436469935444291584,457356038048772096,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1808,2632,2648,2712
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	1	*ppos	0-1000000000
PARAM_VALUE	2	out	4096-ptr_max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_op	4096-ptr_max
PARAM_VALUE	2	out->f_op->copy_file_range	1-u64max
PARAM_VALUE	3	*opos	0-1000000000
PARAM_VALUE	4	len	1-1000000000
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
CAPPED_DATA	0	in->f_inode	1
CAPPED_DATA	0	in->f_inode->i_size	1
CAPPED_DATA	2	out->f_inode	1
CAPPED_DATA	2	out->f_op->copy_file_range	1
CAPPED_DATA	4	len	1
CAPPED_DATA	4	len	1
DATA_SOURCE	0	in	$0
DATA_SOURCE	2	out	$2
DATA_SOURCE	4	len	$4
NOSPEC	1	*ppos
NOSPEC	3	*opos
NOSPEC	4	len
NOSPEC	4	len
RX_PATH
USER_DATA	1	*ppos	0-1000000000[c]
USER_DATA	3	*opos	0-1000000000[c]
USER_DATA	4	len	1-1000000000[c]
NO_OVERFLOW_SIMPLE	0	in->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	0	in->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	1	*ppos
NO_OVERFLOW_SIMPLE	2	out->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	out->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	4	len
USER_PTR	1	ppos
USER_PTR	3	opos
HALF_LOCKED2		&pool->lock

fs/smb/client/cifsfs.c splice_copy_file_range() -> splice_file_range()

Type	Parameter	Key	Value
PARAM_VALUE	0	in	4096-ptr_max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_inode	4096-ptr_max
PARAM_VALUE	0	in->f_inode->i_rwsem.dep_map->name	0-255
PARAM_VALUE	0	in->f_inode->i_rwsem.first_waiter->handoff_set	1
PARAM_VALUE	0	in->f_inode->i_rwsem.first_waiter->list.next	2624917664208203776
PARAM_VALUE	0	in->f_inode->i_rwsem.first_waiter->list.prev	2624917664208203776
PARAM_VALUE	0	in->f_inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_io_list.next	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_io_list.prev	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_io_list.prev->next	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,4672,148606482432692224,436469935444291584,457356038048772096,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1808,2632,2648,2712
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_export_op->fh_to_parent	0,5297,148606482432692224,436469935444291584,467281172929331200
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork->timer->entry.pprev	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.work.entry.next->prev	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->list_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->work_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	in->private_data->tlink->tl_tcon->ses->server->tcpStatus	2-3
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->auth_key.response	0-255
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->ip_addr	0-255
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->preauth_sha_hash	0-255
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->server->cryptkey	0-255
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->server->fastest_cmd	0-4294967295
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->server->server_GUID	0-255
PARAM_VALUE	0	*in->private_data->tlink->tl_tcon->ses->server->slowest_cmd	0-4294967295
PARAM_VALUE	1	*ppos	0-1000000000
PARAM_VALUE	2	out	4096-ptr_max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_inode->i_flags	0,4096-u32max
PARAM_VALUE	2	out->f_inode->i_io_list.next	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_io_list.prev	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_io_list.prev->next	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792
PARAM_VALUE	2	out->f_inode->i_mapping->host->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864
PARAM_VALUE	2	out->f_inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,148606482432692224,436469935444291584
PARAM_VALUE	2	out->f_inode->i_mapping->host->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.dep_map->name	0-255
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->list.next	2212933610777083904
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->list.prev	2212933610777083904
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_mapping->invalidate_lock.dep_map->name	0-255
PARAM_VALUE	2	out->f_inode->i_mapping->invalidate_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_mapping->invalidate_lock.first_waiter->list.next	2624917664208203776
PARAM_VALUE	2	out->f_inode->i_mapping->invalidate_lock.first_waiter->list.prev	2624917664208203776
PARAM_VALUE	2	out->f_inode->i_mapping->invalidate_lock.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_rwsem.dep_map->name	0-255
PARAM_VALUE	2	out->f_inode->i_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_rwsem.first_waiter->list.next	2624917664208203776
PARAM_VALUE	2	out->f_inode->i_rwsem.first_waiter->list.prev	2624917664208203776
PARAM_VALUE	2	out->f_inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_sb->s_export_op->fh_to_parent	0,5297,148606482432692224,436469935444291584,467281172929331200
PARAM_VALUE	2	out->f_inode->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896
PARAM_VALUE	2	out->f_inode->i_wb->dwork->timer->entry.pprev	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_wb->list_lock.rlock.dep_map->name	0-255
PARAM_VALUE	2	out->f_op	4096-ptr_max
PARAM_VALUE	2	out->f_op->copy_file_range	1-u64max
PARAM_VALUE	2	out->private_data	4096-ptr_max
PARAM_VALUE	2	out->private_data->tlink->tl_tcon->max_bytes_chunk	0-4294967295
PARAM_VALUE	2	out->private_data->tlink->tl_tcon->max_bytes_copy	0-4294967295
PARAM_VALUE	2	out->private_data->tlink->tl_tcon->max_chunks	0-4294967295
PARAM_VALUE	2	out->private_data->tlink->tl_tcon->ses->chan_lock.rlock.dep_map->name	0-255
PARAM_VALUE	2	out->private_data->tlink->tl_tcon->ses->server->sec_ntlmssp	0-1
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->auth_key.response	0-255
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->ip_addr	0-255
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->password	0-255
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->password2	0-255
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->preauth_sha_hash	0-255
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->server->fastest_cmd	0-4294967295
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->server->server_GUID	0-255
PARAM_VALUE	2	*out->private_data->tlink->tl_tcon->ses->server->slowest_cmd	0-4294967295
PARAM_VALUE	3	*opos	0-1000000000
PARAM_VALUE	4	len	1-1000000000
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
CAPPED_DATA	0	in->f_inode	1
CAPPED_DATA	0	in->f_inode->i_size	1
CAPPED_DATA	2	out->f_inode	1
CAPPED_DATA	2	out->f_op->copy_file_range	1
DATA_SOURCE	0	in	$0
DATA_SOURCE	2	out	$2
DATA_SOURCE	4	len	$4
NOSPEC	1	*ppos
NOSPEC	3	*opos
NOSPEC	4	len
NOSPEC	4	len
RX_PATH
USER_DATA	1	*ppos	0-1000000000[c]
USER_DATA	3	*opos	0-1000000000[c]
USER_DATA	4	len	1-1000000000[c]
NO_OVERFLOW_SIMPLE	0	in->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	0	in->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	1	*ppos
NO_OVERFLOW_SIMPLE	2	out->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	out->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	4	len
USER_PTR	1	ppos
USER_PTR	3	opos
HALF_LOCKED2		&pool->lock

fs/ceph/file.c __ceph_copy_file_range() -> splice_file_range()

Type	Parameter	Key	Value
PARAM_VALUE	0	in	4096-ptr_max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_inode	4096-ptr_max
PARAM_VALUE	0	in->f_inode->i_sb	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1808,2632,2648,2712
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	1	*ppos	0-1000000000
PARAM_VALUE	2	out	4096-ptr_max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_inode	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_mapping	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_sb	4096-ptr_max
PARAM_VALUE	2	out->f_op	4096-ptr_max
PARAM_VALUE	2	out->f_op->copy_file_range	1-u64max
PARAM_VALUE	3	*opos	0-1000000000
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
CAPPED_DATA	0	in->f_inode	1
CAPPED_DATA	0	in->f_inode->i_size	1
CAPPED_DATA	2	out->f_inode	1
CAPPED_DATA	2	out->f_op->copy_file_range	1
DATA_SOURCE	0	in	$0
DATA_SOURCE	2	out	$2
NOSPEC	1	*ppos
NOSPEC	3	*opos
NOSPEC	4	len
NOSPEC	4	len
RX_PATH
USER_DATA	1	*ppos	0-1000000000[c]
USER_DATA	3	*opos	0-1000000000[c]
USER_DATA	4	len	0-s32max[c]
NO_OVERFLOW_SIMPLE	0	in->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	0	in->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	1	*ppos
NO_OVERFLOW_SIMPLE	2	out->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	out->f_path.moved->d_inode->i_size
USER_PTR	1	ppos
USER_PTR	3	opos
HALF_LOCKED2		&pool->lock

fs/ceph/file.c __ceph_copy_file_range() -> splice_file_range()

Type	Parameter	Key	Value
PARAM_VALUE	0	in	4096-ptr_max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_inode	4096-ptr_max
PARAM_VALUE	0	in->f_inode->i_sb	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1808,2632,2648,2712
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	2	out	4096-ptr_max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_inode	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_io_list.next->prev	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_lock.rlock.dep_map->name	0-255
PARAM_VALUE	2	out->f_inode->i_mapping	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_sb	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648
PARAM_VALUE	2	out->f_inode->i_wb->dwork.work.entry.next->prev	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_wb->work_lock.rlock.dep_map->name	0-255
PARAM_VALUE	2	out->f_op	4096-ptr_max
PARAM_VALUE	2	out->f_op->copy_file_range	1-u64max
PARAM_VALUE	4	len	1-999999999
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
CAPPED_DATA	0	in->f_inode	1
CAPPED_DATA	0	in->f_inode->i_size	1
CAPPED_DATA	2	out->f_inode	1
CAPPED_DATA	2	out->f_op->copy_file_range	1
CAPPED_DATA	4	len	1
CAPPED_DATA	4	len	1
DATA_SOURCE	0	in	$0
DATA_SOURCE	2	out	$2
DATA_SOURCE	4	len	$4 [m]
NOSPEC	1	*ppos
NOSPEC	3	*opos
NOSPEC	4	len
NOSPEC	4	len
RX_PATH
USER_DATA	1	*ppos	0-17589934588
USER_DATA	3	*opos	0-3000000000[c]
USER_DATA	4	len	1-999999999[c]
NO_OVERFLOW_SIMPLE	0	in->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	0	in->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	1	*ppos
NO_OVERFLOW_SIMPLE	2	out->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	out->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	4	len
UNITS	4	len	unit_byte
USER_PTR	1	ppos
USER_PTR	3	opos
HALF_LOCKED2		&pool->lock

fs/ceph/file.c splice_copy_file_range() -> splice_file_range()

Type	Parameter	Key	Value
PARAM_VALUE	0	in	4096-ptr_max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_inode	4096-ptr_max
PARAM_VALUE	0	in->f_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_inode->i_sb	4096-ptr_max
PARAM_VALUE	0	in->f_inode->i_sb->s_fs_info	4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1808,2632,2648,2712
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	1	*ppos	0-1000000000
PARAM_VALUE	2	out	4096-ptr_max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_inode	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_sb	4096-ptr_max
PARAM_VALUE	2	out->f_inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648
PARAM_VALUE	2	out->f_op	4096-ptr_max
PARAM_VALUE	2	out->f_op->copy_file_range	1-u64max
PARAM_VALUE	3	*opos	0-1000000000
PARAM_VALUE	4	len	1-1000000000
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
CAPPED_DATA	0	in->f_inode	1
CAPPED_DATA	0	in->f_inode->i_sb	1
CAPPED_DATA	0	in->f_inode->i_size	1
CAPPED_DATA	2	out->f_inode	1
CAPPED_DATA	2	out->f_inode->i_sb	1
CAPPED_DATA	2	out->f_op->copy_file_range	1
CAPPED_DATA	4	len	1
CAPPED_DATA	4	len	1
DATA_SOURCE	0	in	$0
DATA_SOURCE	2	out	$2
DATA_SOURCE	4	len	$4
NOSPEC	1	*ppos
NOSPEC	3	*opos
NOSPEC	4	len
NOSPEC	4	len
RX_PATH
USER_DATA	1	*ppos	0-1000000000[c]
USER_DATA	2	out->f_inode->i_blocks	0-18014398509481984[c]
USER_DATA	3	*opos	0-1000000000[c]
USER_DATA	4	len	1-1000000000[c]
NO_OVERFLOW_SIMPLE	0	in->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	0	in->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	1	*ppos
NO_OVERFLOW_SIMPLE	2	out->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	out->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	4	len
UNITS	4	len	unit_byte
USER_PTR	1	ppos
USER_PTR	3	opos
HALF_LOCKED2		&pool->lock

fs/fuse/file.c splice_copy_file_range() -> splice_file_range()

Type	Parameter	Key	Value
PARAM_VALUE	0	in	4096-ptr_max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	0	in->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	0	in->f_inode	4096-ptr_max
PARAM_VALUE	0	in->f_inode->i_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,4672,148606482432692224,436469935444291584,457356038048772096,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_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	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1808,2632,2648,2712
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	0	in->f_path.dentry->d_inode->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	in->f_path.dentry->d_inode->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	0	in->f_path.dentry->d_inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	0	in->private_data	4096-ptr_max
PARAM_VALUE	0	in->private_data->fm->fc->no_copy_file_range	0-1
PARAM_VALUE	1	*ppos	0-1000000000
PARAM_VALUE	2	out	4096-ptr_max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	2	out->f_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	2	out->f_inode->i_data.host->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792,2776440803454029824,3228746867770966016,3502492669594062848,3526768263295340544,3559173554394271744,5000850239487131648,5583386343686406144,5817357685191483392-s64max
PARAM_VALUE	2	out->f_inode->i_data.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	2	out->f_inode->i_data.host->i_sb->s_export_op->fh_to_parent	0,4672,148606482432692224,436469935444291584,457356038048772096,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000-s64max
PARAM_VALUE	2	out->f_inode->i_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	2	out->f_inode->i_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	2	out->f_inode->i_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	2	out->f_inode->i_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	out->f_inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	out->f_inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648
PARAM_VALUE	2	out->f_inode->i_sb->s_export_op->fh_to_parent	0,5297,148606482432692224,436469935444291584,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000,3511613614414655488-s64max
PARAM_VALUE	2	out->f_inode->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	2	out->f_op	4096-ptr_max
PARAM_VALUE	2	out->f_op->copy_file_range	1-u64max
PARAM_VALUE	2	out->private_data	4096-ptr_max
PARAM_VALUE	3	*opos	0-1000000000
PARAM_VALUE	4	len	1-1000000000
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	0	in	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
BUF_SIZE	2	out	s32min,(-1),1-s32max
CAPPED_DATA	0	in->f_inode	1
CAPPED_DATA	0	in->f_inode->i_size	1
CAPPED_DATA	2	out->f_inode	1
CAPPED_DATA	2	out->f_op->copy_file_range	1
CAPPED_DATA	4	len	1
CAPPED_DATA	4	len	1
DATA_SOURCE	0	in	$0
DATA_SOURCE	2	out	$2
DATA_SOURCE	4	len	$4
NOSPEC	1	*ppos
NOSPEC	3	*opos
NOSPEC	4	len
NOSPEC	4	len
RX_PATH
USER_DATA	1	*ppos	0-1000000000[c]
USER_DATA	3	*opos	0-1000000000[c]
USER_DATA	4	len	1-1000000000[c]
NO_OVERFLOW_SIMPLE	0	in->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	0	in->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	1	*ppos
NO_OVERFLOW_SIMPLE	2	out->f_path.dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	out->f_path.moved->d_inode->i_size
NO_OVERFLOW_SIMPLE	4	len
UNITS	4	len	unit_byte
USER_PTR	1	ppos
USER_PTR	3	opos
HALF_LOCKED2		&pool->lock