zfcp_qdio_sbal_get(9)

🎀 zfcp_qdio_sbal_get(9) 🎀

🌸 NAME 🌸

okay so welcome to the Kernel API Manual, bestie — this is the page for zfcp_qdio_sbal_get, aka “get free sbal in request queue, wait if necessary.” She’s giving patient-queue energy: if there’s no free sbal, she waits. 💅

✨ SYNOPSIS ✨

int zfcp_qdio_sbal_get (struct zfcp_qdio *qdio );

🎀 ARGUMENTS 🎀

• qdio — pointer to struct zfcp_qdio. That’s the whole arg, bestie — just hand her the pointer. 🫶

💖 DESCRIPTION 💖

okay so the rules are lowkey important: req_q_lock must be held by the caller of this function. And this function may only be called from process context. It will sleep when it’s waiting for a free sbal — so do not bring her into atomic context, bestie, she needs her nap. 😭

⚠️ no cap: hold req_q_lock first, and only call this from process context. The waiting-for-a-free-sbal part sleeps.

🔥 RETURN 🔥

• 0 — success, we love to see it. ✨
• -EIO — there is no free sbal after waiting. 💀

🦋 SEE ALSO 🦋

Kernel file: ./drivers/s390/scsi/zfcp_qdio.c

• zfcp_qdio_sbals_from_sg(9)
• zfcp_qdio_send(9)
• zfcp_qdio_allocate(9)
• zfcp_qdio_close(9)
• zfcp_qdio_open(9)
• zfcp_qdio_siosl(9)

catch you later, bestie — this page is from ./drivers/s390/scsi, October 2026, and it’s serving Kernel API Manual realness 💖✨