blk_alloc_disk(9)

✨ NAME ✨

blk_alloc_disk — allocate a gendisk structure. Welcome to the Kernel API Manual, bestie — this is blk_alloc_disk(9), and it's lowkey iconic. 💅

🎀 SYNOPSIS 🎀

blk_alloc_disk (lim , node_id );

🌸 ARGUMENTS 🌸

• lim — the queue limits to be used for this disk. That's the vibe check for the queue, basically.
• node_id — the numa node to allocate on. Gotta pick where it lives, fr fr.

🦋 DESCRIPTION 🦋

Allocate and pre-initialize a gendisk structure for use with BIO based drivers. It's giving "set it up before the main character energy kicks in." ✨

Returns an ERR_PTR on error, else the allocated disk. So bestie, check for that ERR_PTR — no cap. 🫶

😴 CONTEXT 😴

can sleep

That's the whole context note: can sleep. Let it nap, okay? 😭

🔥 SEE ALSO 🔥

• Kernel file ./include/linux/blkdev.h
• genhd capability flags(9)
• disk_openers(9)
• disk_has_partscan(9)
• bio_needs_zone_write_plugging(9)
• disk_zone_capacity(9)
• queue_limits_start_update(9)
• queue_limits_cancel_update(9)
• bio_end_io_acct(9)

Source/version: ./include/linux · Date: October 2026 · blk_alloc_disk(9) — mwah, that's the page, bestie. 💖🎀🦋