unmap_persist_bufs(9)

unmap_persist_bufs(9) 💖

okay so listen, bestie — this is the unmap_persist_bufs(9) page from the Kernel API Manual, and it's lowkey a little cleanup queen 💅.

🌸 NAME 🌸

unmap_persist_bufs — Unmap persistent data needed for adapter logins. that's the whole name, no cap ✨.

✨ SYNOPSIS ✨

here's the signature, character-for-character, because we do not play with code 🫶:

void unmap_persist_bufs (struct ibmvscsi_host_data *hostdata );

returns void, so like… nothing comes back. iconic, honestly 💀.

🎀 ARGUMENTS 🎀

• hostdata — the ibmvscsi_host_data of host. yep, that's the host data struct you're handing over 💜.

🦋 DESCRIPTION 🦋

okay so what does it actually do? it unmaps the capabilities and adapter info DMA buffers — those two DMA buffers get unmapped, periodt. that's the whole description, no extra lore 🦋.

👑 SEE ALSO 👑

Kernel file: ./drivers/scsi/ibmvscsi/ibmvscsi.c — and here's the whole see-also friend group, every single one, no skips bestie 👑:

• ibmvscsi_handle_event(9)
• ibmvscsi_release_crq_queue(9)
• crq_queue_next_crq(9)
• ibmvscsi_send_crq(9)
• ibmvscsi_task(9)
• ibmvscsi_reset_crq_queue(9)
• ibmvscsi_init_crq_queue(9)
• ibmvscsi_reenable_crq_queue(9)
• initialize_event_pool(9)
• release_event_pool(9)
• valid_event_struct(9)
• free_event_struct(9)
• get_event_struct(9)
• init_event_struct(9)
• unmap_cmd_data(9)
• map_sg_data(9)
• map_data_for_srp_cmd(9)
• purge_requests(9)
• ibmvscsi_set_request_limit(9)
• ibmvscsi_reset_host(9)
• ibmvscsi_timeout(9)
• ibmvscsi_send_srp_event(9)
• handle_cmd_rsp(9)
• lun_from_dev(9)
• ibmvscsi_queuecommand_lck(9)
• map_persist_bufs(9)
• login_rsp(9)
• send_srp_login(9)
• capabilities_rsp(9)
• send_mad_capabilities(9)
• fast_fail_rsp(9)
• enable_fast_fail(9)
• adapter_info_rsp(9)
• send_mad_adapter_info(9)
• ibmvscsi_eh_host_reset_handler(9)
• ibmvscsi_handle_crq(9)
• ibmvscsi_sdev_configure(9)
• ibmvscsi_change_queue_depth(9)
• ibmvscsi_get_desired_dma(9)
• ibmvscsi_resume(9)

and that's the page, bestie 🎀 source/version: ./drivers/scsi/ibmvscsi; date: October 2026; and yes, we're still on unmap_persist_bufs(9) — slay 💖✨