_ctl_enable_diag_sbr_reload(9)

💅 _ctl_enable_diag_sbr_reload(9) — Kernel API Manual, section 9 🎀

okay so bestie, welcome to the group chat where we talk about a single tiny little kernel function that flips one bit. yes, one bit. and honestly? she's iconic for it. this is from the Kernel API Manual, section 9, and she lives rent-free in the mpt3sas driver. let's get into it ✨

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🌸 NAME 🌸

_ctl_enable_diag_sbr_reload — enable the sbr reload bit 💫

that's it. that's the whole job. she enables the SBR reload bit and she does it with main character energy, no notes.

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🦋 SYNOPSIS 🦋

int _ctl_enable_diag_sbr_reload (struct MPT3SAS_ADAPTER *ioc , void __user *arg );

she returns an int, she takes two args, and yes the spacing is exactly like that, do not come for her formatting 💅

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🎀 ARGUMENTS 🎀

• ioc — the per adapter object 🫶 like, the adapter's whole little personality file. everything you need to know about which adapter we're talking to lives in here.
• arg — a user space buffer containing ioctl content 🌈 this is the stuff the userland side handed over, and it's flagged __user so the kernel knows to be careful with it (as she should 💀).

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✨ DESCRIPTION ✨

okay so literally what she does is enable the SBR reload bit. that's the vibe. that's the assignment. she takes the ioc adapter object and the user space arg buffer with the ioctl content, and she turns that bit on. slay 💖

no cap, that's the entire description from the original — she's a small function with a big job and we respect her for it 👑

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🔥 SEE ALSO 🔥

bestie, buckle up, because the friend group is huge. this function hangs out in the kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.c and she knows, like, everybody 🫶

enum block_state(9), _ctl_display_some_debug(9), mpt3sas_ctl_done(9), _ctl_check_event_type(9), mpt3sas_ctl_add_to_event_log(9), mpt3sas_ctl_event_callback(9), _ctl_verify_adapter(9), mpt3sas_ctl_pre_reset_handler(9), mpt3sas_ctl_clear_outstanding_ioctls(9), mpt3sas_ctl_reset_done_handler(9), _ctl_fasync(9), _ctl_poll(9), _ctl_set_task_mid(9), _ctl_send_mctp_passthru_req(9), _ctl_do_mpt_command(9), _ctl_getiocinfo(9), _ctl_eventquery(9), _ctl_eventenable(9), _ctl_eventreport(9), _ctl_do_reset(9), _ctl_btdh_search_sas_device(9), _ctl_btdh_search_pcie_device(9), _ctl_btdh_search_raid_device(9), _ctl_btdh_mapping(9), _ctl_diag_capability(9), _ctl_diag_get_bufftype(9), _ctl_diag_register_2(9), mpt3sas_enable_diag_buffer(9), _ctl_diag_register(9), _ctl_diag_unregister(9), _ctl_diag_query(9), mpt3sas_send_diag_release(9), _ctl_diag_release(9), _ctl_diag_read_buffer(9), _ctl_addnl_diag_query(9), _ctl_compat_mpt_command(9), _ctl_ioctl_main(9), _ctl_get_mpt_mctp_passthru_adapter(9), mpt3sas_get_device_count(9), _ctl_ioctl(9), _ctl_mpt2_ioctl(9), _ctl_ioctl_compat(9), _ctl_mpt2_ioctl_compat(9), version_fw_show(9), version_bios_show(9), version_mpi_show(9), version_product_show(9), version_nvdata_persistent_show(9), version_nvdata_default_show(9), board_name_show(9), board_assembly_show(9), board_tracer_show(9), io_delay_show(9), device_delay_show(9), fw_queue_depth_show(9), host_sas_address_show(9), logging_level_show(9), fwfault_debug_show(9), ioc_reset_count_show(9), reply_queue_count_show(9), BRM_status_show(9), host_trace_buffer_size_show(9), host_trace_buffer_show(9), host_trace_buffer_enable_show(9), diag_trigger_master_show(9), diag_trigger_master_store(9), diag_trigger_event_show(9), diag_trigger_event_store(9), diag_trigger_scsi_show(9), diag_trigger_scsi_store(9), diag_trigger_mpi_show(9), diag_trigger_mpi_store(9), drv_support_bitmap_show(9), enable_sdev_max_qd_show(9), enable_sdev_max_qd_store(9), sas_address_show(9), sas_device_handle_show(9), sas_ncq_prio_supported_show(9), sas_ncq_prio_enable_show(9), mpt3sas_ctl_init(9), mpt3sas_ctl_release(9), mpt3sas_ctl_exit(9)

iykyk 😭 that's a whole contact list and every single one of them is a real one.

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ngl bestie, this page is short and sweet — no warnings, no bugs section, no exit statuses, just a function, two arguments, and one bit that gets reloaded. sometimes that's all you need 💜

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and that's the tea, bestie 🍓 this little page came out of ./drivers/scsi/mpt3sas and it's dated October 2026 — so mark your calendar, screenshot it, put it on the fridge, whatever you gotta do 📸💖 mwah, love you, bye 👑✨