mpi3mr_count_dev_pending(9)

💅 mpi3mr_count_dev_pending — a kernel API manual moment (section 9, bestie)

okay so this is the mpi3mr_count_dev_pending(9) page from the Kernel API Manual, and honestly? it's a lil cutie with a big job. let's get into it 🫶

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✨ NAME ✨

mpi3mr_count_dev_pending — count commands pending for a lun 💫

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🎀 SYNOPSIS 🎀

bool mpi3mr_count_dev_pending (struct request *rq , void *data );

like, that's the whole signature. bool in, bool out, main character energy fr fr 🦋

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🌸 ARGUMENTS 🌸

• rq — the block request. yes THAT block request. the one being iterated over 👀
• data — a SCSI device reference. it's giving "context pointer who knows things" ✨

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💖 DESCRIPTION 💖

so basically this is an iterator function, and it gets called for each SCSI command in a host. and then — the glow-up — if that command is pending in the LLD for the specific device (the lun), the device-specific pending I/O counter gets updated in the device structure. that's it. that's the whole vibe. no cap, it's just counting and updating 🔥

the way that it's literally a per-command callback doing bookkeeping... obsessed with the efficiency honestly 💅

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🌈 RETURN 🌈

true — always. every single time. no drama, no ambiguity, no "well it depends" 😌 it returns true, periodt.

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🧚 SEE ALSO 🧚

the kernel file lives right here: ./drivers/scsi/mpi3mr/mpi3mr_os.c 📁

and now, the friend group (all of them, bestie — nobody gets left out) 💜:

mpi3mr_host_tag_for_scmd(9), mpi3mr_scmd_from_host_tag(9), mpi3mr_clear_scmd_priv(9), mpi3mr_fwevt_free(9), mpi3mr_fwevt_get(9), mpi3mr_fwevt_put(9), mpi3mr_alloc_fwevt(9), mpi3mr_fwevt_add_to_list(9), mpi3mr_hdb_trigger_data_event(9), mpi3mr_fwevt_del_from_list(9), mpi3mr_dequeue_fwevt(9), mpi3mr_cancel_work(9), mpi3mr_cleanup_fwevt_list(9), mpi3mr_queue_qd_reduction_event(9), mpi3mr_invalidate_devhandles(9), mpi3mr_print_scmd(9), mpi3mr_flush_scmd(9), mpi3mr_count_tgt_pending(9), mpi3mr_flush_host_io(9), mpi3mr_flush_cmds_for_unrecovered_controller(9), mpi3mr_alloc_tgtdev(9), mpi3mr_tgtdev_add_to_list(9), mpi3mr_tgtdev_del_from_list(9), __mpi3mr_get_tgtdev_by_handle(9), mpi3mr_get_tgtdev_by_handle(9), __mpi3mr_get_tgtdev_by_perst_id(9), mpi3mr_get_tgtdev_by_perst_id(9), __mpi3mr_get_tgtdev_from_tgtpriv(9), mpi3mr_set_io_divert_for_all_vd_in_tg(9), mpi3mr_print_device_event_notice(9), mpi3mr_remove_tgtdev_from_host(9), mpi3mr_report_tgtdev_to_host(9), mpi3mr_change_queue_depth(9), mpi3mr_update_sdev(9), mpi3mr_refresh_tgtdevs(9), mpi3mr_debug_dump_devpg0(9), mpi3mr_update_tgtdev(9), mpi3mr_devstatuschg_evt_bh(9), mpi3mr_devinfochg_evt_bh(9), mpi3mr_free_enclosure_list(9), mpi3mr_enclosure_find_by_handle(9), mpi3mr_process_trigger_data_event_bh(9), mpi3mr_encldev_add_chg_evt_debug(9), mpi3mr_encldev_add_chg_evt_bh(9), mpi3mr_sastopochg_evt_debug(9), mpi3mr_sastopochg_evt_bh(9), mpi3mr_pcietopochg_evt_debug(9), mpi3mr_pcietopochg_evt_bh(9), mpi3mr_logdata_evt_bh(9), mpi3mr_update_sdev_qd(9), mpi3mr_set_qd_for_all_vd_in_tg(9), mpi3mr_fwevt_bh(9), mpi3mr_fwevt_worker(9), mpi3mr_create_tgtdev(9), mpi3mr_flush_delayed_cmd_lists(9), mpi3mr_dev_rmhs_complete_iou(9), mpi3mr_dev_rmhs_complete_tm(9), mpi3mr_dev_rmhs_send_tm(9), mpi3mr_complete_evt_ack(9), mpi3mr_send_event_ack(9), mpi3mr_pcietopochg_evt_th(9), mpi3mr_sastopochg_evt_th(9), mpi3mr_devstatuschg_evt_th(9), mpi3mr_preparereset_evt_th(9), mpi3mr_energypackchg_evt_th(9), mpi3mr_cablemgmt_evt_th(9), mpi3mr_add_event_wait_for_device_refresh(9), mpi3mr_os_handle_events(9), mpi3mr_setup_eedp(9), mpi3mr_build_sense_buffer(9), mpi3mr_map_eedp_error(9), mpi3mr_process_op_reply_desc(9), mpi3mr_get_chain_idx(9), mpi3mr_prepare_sg_scmd(9), mpi3mr_build_sg_scmd(9), mpi3mr_tm_response_name(9), mpi3mr_issue_tm(9), mpi3mr_bios_param(9), mpi3mr_map_queues(9), mpi3mr_get_fw_pending_ios(9), mpi3mr_print_pending_host_io(9), mpi3mr_wait_for_host_io(9), mpi3mr_setup_divert_ws(9), mpi3mr_eh_host_reset(9), mpi3mr_eh_bus_reset(9), mpi3mr_eh_target_reset(9), mpi3mr_eh_dev_reset(9), mpi3mr_eh_abort(9), mpi3mr_scan_start(9), mpi3mr_scan_finished(9), mpi3mr_sdev_destroy(9), mpi3mr_target_destroy(9), mpi3mr_sdev_configure(9), mpi3mr_sdev_init(9), mpi3mr_target_alloc(9), mpi3mr_check_return_unmap(9), mpi3mr_allow_scmd_to_fw(9), mpi3mr_qcmd(9), mpi3mr_init_drv_cmd(9), osintfc_mrioc_security_status(9), mpi3mr_probe(9), mpi3mr_remove(9), mpi3mr_shutdown(9), mpi3mr_suspend(9), mpi3mr_resume(9), mpi3mr_pcierr_error_detected(9), mpi3mr_pcierr_slot_reset(9), mpi3mr_pcierr_resume(9), mpi3mr_pcierr_mmio_enabled(9)

like i said. the whole group chat. iykyk 😭👑

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ngl there's no scary warning here, no deprecated nonsense, no undefined behaviour to scream about — just an iterator that counts and says true. a wholesome one. love that for us 🌸

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and that's the page!! source: ./drivers/scsi/mpi3mr, dated October 2026 — so mark your calendars bestie, this one's from the future ✨📅 slay, stay counted, bye 💅💖