iscsi_suspend_queue(9)

okay so this is the Kernel API Manual page for iscsi_suspend_queue, and bestie, it’s giving “pause the queue, protect the vibe.” 💅✨

💖 NAME 💖

iscsi_suspend_queue — suspend iscsi_queuecommand

✨ SYNOPSIS ✨

void iscsi_suspend_queue (struct iscsi_conn *conn );

🎀 ARGUMENTS 🎀

• conn — the iscsi conn to stop queueing IO on 🫶

🦋 DESCRIPTION 🦋

okay so real talk: this grabs the session frwd_lock to make sure nobody is currently in xmit_task/queuecommand, and then it sets suspend to prevent new commands from being queued. no cap, that’s the whole move. 🔥

this only needs to be called by offload drivers that need to sync a path like ep disconnect with the iscsi_queuecommand/xmit_task. it’s a specific little sync situation, not a universal “call me everywhere” moment. 🙈

to start IO again, libiscsi will call iscsi_start_tx and iscsi_unblock_session when in FFP. so yeah: suspend now, un-suspend later, the cycle is iconic. ⭐

🌈 SEE ALSO 🌈

Kernel file: ./drivers/scsi/libiscsi.c

the whole friend group is here, and yes every single one made the list 💜:

• iscsi_prep_data_out_pdu(9)
• iscsi_check_tmf_restrictions(9)
• iscsi_prep_scsi_cmd_pdu(9)
• iscsi_free_task(9)
• __iscsi_put_task(9)
• iscsi_complete_task(9)
• iscsi_complete_scsi_task(9)
• iscsi_alloc_mgmt_task(9)
• iscsi_send_mgmt_task(9)
• iscsi_scsi_cmd_rsp(9)
• iscsi_data_in_rsp(9)
• iscsi_nop_out_rsp(9)
• iscsi_itt_to_task(9)
• __iscsi_complete_pdu(9)
• iscsi_itt_to_ctask(9)
• iscsi_requeue_task(9)
• iscsi_data_xmit(9)
• iscsi_suspend_tx(9)
• iscsi_suspend_rx(9)
• iscsi_conn_unbind(9)
• iscsi_eh_session_reset(9)
• iscsi_eh_target_reset(9)
• iscsi_eh_recover_target(9)
• iscsi_host_add(9)
• iscsi_host_alloc(9)
• iscsi_host_remove(9)
• iscsi_session_setup(9)
• iscsi_session_free(9)
• iscsi_session_teardown(9)
• iscsi_conn_setup(9)
• iscsi_conn_teardown(9)

mwah 💋 this lil page signs off from ./drivers/scsi, dated October 2026, and it’s iscsi_suspend_queue(9) foreverrr 🫶✨💖