mnt_idmap_put(9)

💖 mnt_idmap_put(9) 💖

Okay so bestie, welcome to mnt_idmap_put(9) from the Kernel API Manual — yes, that's the manual name, and we're about to make idmapping reference-counting make sense. 🫶

✨ NAME ✨

mnt_idmap_put — put a reference to an idmapping 👑

🌸 SYNOPSIS 🌸

void mnt_idmap_put (struct mnt_idmap *idmap );

🎀 ARGUMENTS 🎀

• idmap — the idmap to put the reference on. That's the one, bestie. 💅

🦋 DESCRIPTION 🦋

If this is a non-initial idmapping, put the reference count when a mount is released and free it if we're the last user.

Translation for the group chat: when a mount gets released, you drop the reference count on that idmap — but only if it's a non-initial idmapping — and if we're the last user, it gets freed. Slay. ✨

👑 SEE ALSO 👑

Kernel file ./fs/mnt_idmapping.c — plus the whole friend group: initial_idmapping(9), make_vfsuid(9), make_vfsgid(9), from_vfsuid(9), from_vfsgid(9), vfsgid_in_group_p(9), mnt_idmap_get(9). 💖

That's the whole vibe! Cute little sign-off: this page comes from ./fs, dated October 2026, and it's literally mnt_idmap_put(9). Bye bestie! 💅✨🎀