__ext4_fc_track_create 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 3085 (as a prototype)

Defined in 1 files as a function:

fs/ext4/fast_commit.c, line 540 (as a function)

Referenced in 2 files:

Smatch caller information:

fs/ext4/fast_commit.c ext4_fc_track_create() -> __ext4_fc_track_create()

Type	Parameter	Key	Value
PARAM_VALUE	0	handle	0-ptr_max
PARAM_VALUE	0	handle->h_aborted	1
PARAM_VALUE	0	handle->h_err	s32min-(-1),1-s32max
PARAM_VALUE	0	handle->h_transaction->t_journal->j_abort_mutex.first_waiter->list.next	5159360019465732096
PARAM_VALUE	0	handle->h_transaction->t_journal->j_abort_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	0	handle->h_transaction->t_journal->j_abort_mutex.first_waiter->list.prev->prev	5159360019465732096
PARAM_VALUE	0	handle->h_transaction->t_journal->j_abort_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	0	handle->h_transaction->t_journal->j_flags	0,2-u64max
PARAM_VALUE	0	handle->h_transaction->t_journal->j_list_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	handle->h_transaction->t_journal->j_sb_buffer->b_folio->private->codec->users	s32min-s32max
PARAM_VALUE	0	handle->h_transaction->t_journal->j_sb_buffer->b_folio->private->hdr.front_len	0-4294967295
PARAM_VALUE	0	handle->h_transaction->t_journal->j_state_lock.owner	(-1)
PARAM_VALUE	0	handle->h_transaction->t_journal->j_state_lock.owner_cpu	u32max
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_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	dentry	4096-ptr_max
PARAM_VALUE	2	dentry->d_alias.pprev	4096-ptr_max
PARAM_VALUE	2	dentry->d_inode	4096-ptr_max
PARAM_VALUE	2	dentry->d_inode->i_data.host->i_sb->s_export_op->encode_fh	0,1398972869330624512,1616549510479982592,2037984473558433792,2776440803454029824,3228746867770966016,3502492669594062848,3526768263295340544,3559173554394271744,5000850239487131648,5583386343686406144,5817357685191483392-s64max
PARAM_VALUE	2	dentry->d_inode->i_data.host->i_sb->s_export_op->fh_to_dentry	0,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-s64max
PARAM_VALUE	2	dentry->d_inode->i_data.host->i_sb->s_export_op->fh_to_parent	0,148606482432692224,436469935444291584,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000,3511613614414655488-s64max
PARAM_VALUE	2	dentry->d_inode->i_data.host->i_sb->s_export_op->get_parent	0,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	2	dentry->d_inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,1398972869330624512,1616549510479982592,2037984473558433792,2776440803454029824,3228746867770966016,3502492669594062848,3526768263295340544,3559173554394271744,5000850239487131648,5583386343686406144,5817357685191483392-s64max
PARAM_VALUE	2	dentry->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_dentry	0,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-s64max
PARAM_VALUE	2	dentry->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,148606482432692224,436469935444291584,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000,3511613614414655488-s64max
PARAM_VALUE	2	dentry->d_inode->i_mapping->host->i_sb->s_export_op->get_parent	0,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	2	dentry->d_inode->i_sb	4096-ptr_max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648
PARAM_VALUE	2	dentry->d_inode->i_sb->s_export_op->encode_fh	0,1398972869330624512,1616549510479982592,2037984473558433792,2776440803454029824,3228746867770966016,3502492669594062848,3526768263295340544,3559173554394271744,5000850239487131648,5583386343686406144,5817357685191483392-s64max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_export_op->fh_to_dentry	0,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-s64max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_export_op->fh_to_parent	0,148606482432692224,436469935444291584,467281172929331200,529780027764285440,1092893949038768128,1556959531105513472,1608953577475584000,1649536479961075712,2404761408063094784,2970908329832960000,3511613614414655488-s64max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_export_op->get_parent	0,264940071972966400,291591359766798336,565128213429456896,893189740598853632,1241177127089143808,1474696885321834496,1812477326828269568,1893665921928286208,2210088671756947456,2437012291923775488,2483979068402987008-s64max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_add_error_count	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_addr_per_block_bits	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_awu_max	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_awu_min	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_bdev_wb_err	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_blockfile_groups	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_cluster_bits	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_cluster_ratio	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_csum_seed	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_def_hash_version	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_def_mount_opt	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_def_mount_opt2	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_desc_per_block_bits	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_extent_max_zeroout_kb	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_fc_bytes	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_fc_debug_max_replay	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_fc_ineligible_tid	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_first_error_code	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_first_error_ino	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_first_error_line	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_first_ino	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_flex_groups_allocated	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_group_info_size	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_groups_count	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_hash_unsigned	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_inode_goal	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_inode_readahead_blks	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_inode_size	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_jquota_fmt	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_last_error_code	s32min-s32max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_last_error_ino	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_last_error_line	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_li_wait_mult	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_log_groups_per_flex	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_max_batch_time	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_max_dir_size_kb	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_max_folio_order	0-u16max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_best_avail_max_trim_order	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_group_prealloc	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_max_linear_groups	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_max_to_scan	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_min_to_scan	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_nr_global_goals	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_order2_reqs	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_prefetch	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_prefetch_limit	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_stats	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mb_stream_request	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_min_batch_time	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_min_folio_order	0-u16max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mount_opt	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mount_opt2	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_mount_state	0-u16max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_pad	0-u16max
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_sb_update_kb	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_sb_update_sec	0-4294967295
PARAM_VALUE	2	dentry->d_inode->i_sb->s_fs_info->s_want_extra_isize	0-4294967295
PARAM_VALUE	2	dentry->d_op->d_automount	0,2908707185815040000,3401111987815645184,6746145930460459008,7190988915944083456,7386785427940065280,8018779550845526016
PARAM_VALUE	2	dentry->d_op->d_dname	0,4096-ptr_max
PARAM_VALUE	2	dentry->d_op->d_init	0,2385819921126617088,7057831443282669568,7824184004865302528
PARAM_VALUE	2	dentry->d_op->d_iput	0,4096-ptr_max
PARAM_VALUE	2	dentry->d_op->d_manage	0,1859587847549206528
PARAM_VALUE	2	dentry->d_op->d_prune	0,4096-ptr_max
PARAM_VALUE	2	dentry->d_op->d_real	0,4096-ptr_max
PARAM_VALUE	2	dentry->d_op->d_unalias_trylock	0,6635409759016140800
PARAM_VALUE	2	dentry->d_op->d_unalias_unlock	0,6336447517789900800
PARAM_VALUE	2	dentry->d_op->d_weak_revalidate	0,1549882712720502784,5632434648052031488,5669063523602272256,7231033168839651328
PARAM_VALUE	2	dentry->d_parent	4096-ptr_max
PARAM_VALUE	2	dentry->d_parent->d_inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792
PARAM_VALUE	2	dentry->d_parent->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864
PARAM_VALUE	2	dentry->d_parent->d_inode->i_mapping->host->i_sb->s_export_op->fh_to_parent	0,5297,148606482432692224,436469935444291584,467281172929331200
PARAM_VALUE	2	dentry->d_parent->d_inode->i_mapping->host->i_sb->s_export_op->get_parent	0,8931,264940071972966400,291591359766798336,565128213429456896
PARAM_VALUE	2	dentry->d_parent->d_inode->i_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	dentry->d_parent->d_inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_export_op->encode_fh	0,2,1398972869330624512,1616549510479982592,2037984473558433792
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_export_op->fh_to_parent	0,4672,148606482432692224,436469935444291584,457356038048772096
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->error_dirty	0-1
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->no_chk_data_crc	0-1
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->ro_error	0-1
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->s_bdev_wb_lock.rlock.dep_map->name	0-255
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->s_journal->j_state_lock.dep_map->name	0-255
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->stats->crc_errors	0-4294967295
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->stats->magic_errors	0-4294967295
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->stats->node_errors	0-4294967295
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->tnc_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->tnc_mutex.first_waiter->list.prev->prev	5159360019465732096
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->tnc_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	2	dentry->d_parent->d_inode->i_sb->s_fs_info->vfs_sb->s_blocksize_bits	0-255
PARAM_VALUE	2	dentry->d_parent->d_inode->i_wb->dwork.work.entry.next->prev	4096-ptr_max
BUF_SIZE	0	handle	1-s32max
BUF_SIZE	0	handle	1-s32max
BUF_SIZE	2	dentry	(-1),1-s32max
BUF_SIZE	2	dentry	(-1),1-s32max
CAPPED_DATA	2	dentry->d_parent->d_inode	1
CAPPED_DATA	2	dentry->d_parent->d_inode->i_sb	1
DATA_SOURCE	0	handle	$0
DATA_SOURCE	2	dentry	$1
PARAM_COMPARE	1	inode	== $2->d_inode
PARAM_COMPARE	2	dentry->d_inode	== $1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	2	dentry->d_inode->i_size
NO_OVERFLOW_SIMPLE	2	dentry->d_sb->s_blocksize
NO_OVERFLOW_SIMPLE	2	dentry->d_sb->s_blocksize_bits
HALF_LOCKED2	2	&dentry->d_lockref.lock