invalidate_disk(9)

💅 NAME 💅

invalidate_disk — invalidate the disk. This is page invalidate_disk(9) from the Kernel API Manual, and bestie, it's literally the clean the disk so it can be reused helper. 💖

✨ SYNOPSIS ✨

void invalidate_disk (struct gendisk *disk );

🎀 ARGUMENTS 🎀

• disk — the struct gendisk to invalidate. Hand this one over and let it get its reset moment. 🫶

🦋 DESCRIPTION 🦋

Okay so: this is a helper that invalidates the disk. It cleans the disk's associated buffer/page caches and resets its internal states so that the disk can be reused by the drivers. The way that's a full clean-slate vibe for drivers — iconic, no cap. ✨

😴 CONTEXT 😴

can sleep — yes bestie, this one can sleep. 😴

🔥 SEE ALSO 🔥

Kernel file ./block/genhd.c, plus the whole posse:

• bdev_count_inflight(9)
• __register_blkdev(9)
• add_disk_fwnode(9)
• device_add_disk(9)
• blk_mark_disk_dead(9)
• del_gendisk(9)
• disk_release(9)
• put_disk(9)
• set_disk_ro(9)

That's the page, bestie 💅 — source/version ./block, date October 2026, and we are so done with invalidate_disk(9). 🎀✨