loop_set_size(9)

💖 NAME 💖

loop_set_size — sets device size and notifies userspace ✨

hey bestie, welcome to the loop_set_size(9) page from the Kernel API Manual 🫶 this one's short and sweet, no cap.

✨ SYNOPSIS ✨

void loop_set_size (struct loop_device *lo , loff_t size );

🌸 ARGUMENTS 🌸

• lo — the struct loop_device you're setting the size for 💅
• size — the new size of the loop device, periodt.

🦋 DESCRIPTION 🦋

okay so real talk: callers must validate that the size they pass into this function actually fits into a sector_t — like, for example, by using loop_validate_size 👑 no skipping that vibe check.

🎀 SEE ALSO 🎀

Kernel file ./drivers/block/loop.c — and also these besties:

• loop_global_lock_killable(9)
• loop_global_unlock(9)
• loop_set_status_from_info(9)

source/version: ./drivers/block · October 2026 — that's the cute lil sign-off, mwah 💋