ext4_bread identifier - Linux source code next-20260811

Projects

linux

Versions

FIXME
- FIXME
  - next-20260811

Defined in 1 files as a prototype:

fs/ext4/ext4.h, line 3141 (as a prototype)

Defined in 1 files as a function:

fs/ext4/inode.c, line 1048 (as a function)

Referenced in 5 files:

Smatch caller information:

fs/ext4/symlink.c ext4_encrypted_get_link() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_op	4096-ptr_max
PARAM_VALUE	1	inode->i_op->get_link	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->readlink	0,1728600404483375104,2832489546165891072,2874824064778891264,3069732422725099520,4516337085607264256
PARAM_VALUE	1	inode->i_sb	4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_add_error_count	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_addr_per_block_bits	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_awu_max	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_awu_min	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_bdev_wb_err	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_blockfile_groups	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_cluster_bits	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_cluster_ratio	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_csum_seed	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_def_hash_version	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_def_mount_opt	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_def_mount_opt2	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_desc_per_block_bits	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_extent_max_zeroout_kb	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_fc_bytes	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_fc_debug_max_replay	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_fc_ineligible_tid	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_first_error_code	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_first_error_ino	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_first_error_line	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_first_ino	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_flex_groups_allocated	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_group_info_size	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_groups_count	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_hash_unsigned	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_inode_goal	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_inode_readahead_blks	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_inode_size	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_jquota_fmt	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_last_error_code	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_last_error_ino	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_last_error_line	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_li_wait_mult	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_log_groups_per_flex	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_max_batch_time	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_max_dir_size_kb	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_max_folio_order	0-u16max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_best_avail_max_trim_order	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_group_prealloc	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_max_linear_groups	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_max_to_scan	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_min_to_scan	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_nr_global_goals	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_order2_reqs	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_prefetch	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_prefetch_limit	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_stats	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mb_stream_request	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_min_batch_time	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_min_folio_order	0-u16max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mount_opt	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mount_opt2	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_mount_state	0-u16max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_pad	0-u16max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_sb_update_kb	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_sb_update_sec	0-4294967295
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_want_extra_isize	0-4294967295
PARAM_VALUE	2	block	0
PARAM_VALUE	3	map_flags	0
DATA_SOURCE	1	inode	$1
RX_PATH
TASK_NOT_RUNNING

fs/ext4/symlink.c ext4_get_link() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_op	4096-ptr_max
PARAM_VALUE	1	inode->i_op->get_link	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->readlink	0,1728600404483375104,2832489546165891072,2874824064778891264,3069732422725099520,4516337085607264256
PARAM_VALUE	2	block	0
PARAM_VALUE	3	map_flags	0
DATA_SOURCE	1	inode	$1
RX_PATH
TASK_NOT_RUNNING

fs/ext4/orphan.c ext4_init_orphan_info() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_size	s64min-s32max
PARAM_VALUE	2	block	0-s32max
PARAM_VALUE	3	map_flags	0
CAPPED_DATA	1	inode	1
CAPPED_DATA	1	inode->i_size	1
CAPPED_DATA	2	block	1
DATA_SOURCE	1	inode	r __ext4_iget
NO_OVERFLOW_SIMPLE	2	block
UNITS	2	block	unit_array_size

fs/ext4/namei.c __ext4_add_entry() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle->h_transaction->t_journal->j_superblock->s_checksum_type	4
PARAM_VALUE	0	handle->h_transaction->t_journal->j_superblock->s_errno	0-4294967187,4294967189-u32max
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792
PARAM_VALUE	1	inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,5297,148606482432692224,436469935444291584,467281172929331200
PARAM_VALUE	1	inode->i_mapping->host->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_op->readlink	0,4096-ptr_max
PARAM_VALUE	1	inode->i_sb	4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_bdev->bd_mapping->i_private_lock.rlock.dep_map->name	0-255
PARAM_VALUE	1	inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648
PARAM_VALUE	1	inode->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_es->s_free_blocks_count_hi	0
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_freeclusters_counter.lock.owner	(-1)
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_freeclusters_counter.lock.raw_lock.val.counter	s32min-s32max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_journal->j_state_lock.dep_map->name	0-255
PARAM_VALUE	1	inode->i_wb->dwork.work.entry.next->prev	4096-ptr_max
PARAM_VALUE	2	block	1-u32max
PARAM_VALUE	3	map_flags	1
BUF_SIZE	0	handle	1-s32max
BUF_SIZE	0	handle	1-s32max
CAPPED_DATA	1	inode	1
CAPPED_DATA	1	inode->i_sb	1
CAPPED_DATA	2	block	1
DATA_SOURCE	0	handle	$0
DATA_SOURCE	1	inode	$1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&dentry->d_lockref.lock

fs/ext4/namei.c __ext4_read_dirblock() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_sb	4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_fs_info	4096-ptr_max
PARAM_VALUE	3	map_flags	0
CAPPED_DATA	2	block	1
DATA_SOURCE	1	inode	$0
DATA_SOURCE	2	block	$1
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	inode->i_bytes	0-65023[c]
USER_DATA	1	inode->i_mode	0-u16max
USER_DATA	1	inode->i_size	(-9223372036854775807)-(-4),0-s64max
HALF_LOCKED2		&inode->i_rwsem

fs/ext4/namei.c ext4_append() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle->h_transaction->t_journal->j_superblock->s_checksum_type	4
PARAM_VALUE	0	handle->h_transaction->t_journal->j_superblock->s_errno	0-4294967187,4294967189-u32max
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	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	1	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	1	inode->i_data.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	1	inode->i_data.host->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	1	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	1	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	1	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	1	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	1	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_op->get_acl	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->get_link	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->link	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->lookup	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->mknod	0,4096-ptr_max
PARAM_VALUE	1	inode->i_op->readlink	0,4096-ptr_max
PARAM_VALUE	1	inode->i_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_sb	4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_cop->empty_dir	0,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	1	inode->i_sb->s_cop->get_context	0,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	1	inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648,2712
PARAM_VALUE	1	inode->i_sb->s_cop->set_context	0,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	1	inode->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792,2776440803454029824,3228746867770966016,3502492669594062848,3526768263295340544,3559173554394271744,5000850239487131648,5583386343686406144,5817357685191483392-s64max
PARAM_VALUE	1	inode->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-s64max
PARAM_VALUE	1	inode->i_sb->s_export_op->fh_to_parent	0,4672,148606482432692224,436469935444291584,457356038048772096,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000-s64max
PARAM_VALUE	1	inode->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_hard	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_lazy	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_queued	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_soft	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_es->s_free_blocks_count_hi	0
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_es_lock.rlock.dep_map->name	0-255
PARAM_VALUE	1	inode->i_wb->dwork.wq->dfl_pwq	0-s64max
PARAM_VALUE	1	inode->i_wb->dwork.wq->saved_max_active	s32min-s32max
PARAM_VALUE	1	inode->i_wb->dwork.wq->saved_min_active	s32min-s32max
PARAM_VALUE	1	*inode->i_sb->s_fs_info->s_first_error_func	0-255
PARAM_VALUE	1	*inode->i_sb->s_fs_info->s_last_error_func	0-255
PARAM_VALUE	3	map_flags	1
BUF_SIZE	0	handle	(-1)-s32max
BUF_SIZE	0	handle	(-1)-s32max
BUF_SIZE	1	inode->i_fop	(-1),272
BUF_SIZE	1	inode->i_op	(-1),256
CAPPED_DATA	1	inode	1
DATA_SOURCE	0	handle	$0
DATA_SOURCE	1	inode	$1
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	inode->i_mode	0-u16max
USER_DATA	1	inode->i_sb->s_fs_info->s_first_error_block	s64min-s64max[c]
USER_DATA	1	inode->i_sb->s_fs_info->s_first_error_ino	0-4294967295
USER_DATA	1	inode->i_size	(-9223372036854775807)-(-4),0-s64max
USER_DATA	2	block	0-u32max
NO_OVERFLOW_SIMPLE	1	inode->i_bytes

fs/ext4/namei.c ext4_init_symlink_block() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	2	block	0
PARAM_VALUE	3	map_flags	1
DATA_SOURCE	0	handle	$0
DATA_SOURCE	1	inode	$1

fs/ext4/dir.c ext4_readdir() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_sb	4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_bdev->bd_mapping->host->i_op->get_offset_ctx	0,2606890545167454208
PARAM_VALUE	1	inode->i_sb->s_bdev->bd_mapping->host->i_op->readlink	0,1728600404483375104,2832489546165891072,2874824064778891264,3069732422725099520,4516337085607264256
PARAM_VALUE	1	inode->i_sb->s_bdev->bd_mapping->host->i_op->sync_lazytime	0,6951464784224747520
PARAM_VALUE	1	inode->i_sb->s_bdev->bd_mapping->invalidate_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_sb->s_bdev->bd_mapping->invalidate_lock.first_waiter->type	0-1
PARAM_VALUE	1	inode->i_sb->s_cop->empty_dir	0,86,4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_cop->get_context	0,706,4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_cop->set_context	0,67,4096-ptr_max
PARAM_VALUE	1	inode->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-s64max
PARAM_VALUE	1	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	1	inode->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_hard	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_lazy	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_queued	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_err_report.is_soft	0-1
PARAM_VALUE	1	inode->i_sb->s_fs_info->s_es->s_free_blocks_count_hi	0
PARAM_VALUE	1	inode->i_size	(-9223372036854775807)-s64max
PARAM_VALUE	3	map_flags	0
CAPPED_DATA	1	inode	1
BIT_INFO	1	inode->i_flags	0x0,0xffffffff
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	inode->i_sb->s_fs_info->s_first_error_block	s64min-s64max[c]
USER_DATA	1	inode->i_sb->s_fs_info->s_first_error_ino	0-4294967295
UNITS	2	block	unit_byte
HALF_LOCKED2		&dir_fp->readdir_lock
HALF_LOCKED2		&inode->i_rwsem
HALF_LOCKED2		&pool->lock
TYPE_LOCK		(struct inode)->i_rwsem

fs/ext4/super.c ext4_quota_read() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0
PARAM_VALUE	1	inode	4096-ptr_max
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	3	map_flags	0
CAPPED_DATA	1	inode	1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&dqopt->dqio_sem
HALF_LOCKED2		&dquot->dq_lock
HALF_LOCKED2		&oinfo->dqi_gqinode->i_rwsem

fs/ext4/super.c ext4_quota_write() -> ext4_bread()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	1-u64max
PARAM_VALUE	0	handle->h_transaction->t_journal->j_superblock->s_checksum_type	4
PARAM_VALUE	0	handle->h_transaction->t_journal->j_superblock->s_errno	0-4294967187,4294967189-u32max
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	1	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	3	map_flags	33
BUF_SIZE	0	handle	1-s32max
BUF_SIZE	0	handle	1-s32max
DATA_SOURCE	0	handle	r journal_current_handle
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&dqopt->dqio_sem
HALF_LOCKED2		&dquot->dq_lock