mnt_unhold_writers(9)

💅 mnt_unhold_writers — the Kernel API Manual page, bestie edition 🎀

okay so you're in the Kernel API Manual (section 9, kernel glamour section) and the page is mnt_unhold_writers. Yes it's a mouthful. Yes it's iconic. Let's go. ✨

---

🌸 NAME 🌸

mnt_unhold_writers — stop preventing write access to the given mount

Like, you were gatekeeping writes on a mount and now you're done gatekeeping. Character development. 💖

---

🦋 SYNOPSIS 🦋

void mnt_unhold_writers (struct mount *mnt );

No return value, no drama, a void king. 👑

---

🎀 ARGUMENTS 🎀

• mnt — the mnt you're gonna stop preventing write access to. That's the whole thing. That's the assignment. 🫶

---

✨ DESCRIPTION ✨

So basically: stop preventing write access to mnt, which lets callers gain write access to mnt again. Writes are back on the menu, bestie. 🔥

⚠️ Real talk though — this function can only be called after a call to mnt_hold_writers. You can't just roll up and unhold something you never held. That's not how any of this works, and the kernel will not be nice about it. 💀

---

🧚 CONTEXT 🧚

This function expects to be in the same mount_locked_reader scope as the matching mnt_hold_writers. Same scope, same vibe, matched set. If your hold lives over there and your unhold lives over here, you have a problem, not a solution. 🙈

---

🌈 SEE ALSO 🌈

Kernel file ./fs/namespace.c — and honestly, the whole friend group:

• mnt_get_write_access(9)
• mnt_want_write(9)
• mnt_get_write_access_file(9)
• mnt_want_write_file(9)
• mnt_put_write_access(9)
• mnt_drop_write(9)
• mnt_hold_writers(9)
• __lookup_mnt(9)
• lookup_mnt(9)
• attach_mnt(9)
• vfs_create_mount(9)
• path_is_mountpoint(9)
• may_umount_tree(9)
• may_umount(9)
• clone_private_mount(9)
• attach_recursive_mnt(9)
• do_lock_mount(9)
• path_overmounted(9)
• can_move_mount_beneath(9)
• mnt_set_expiry(9)
• mnt_allow_writers(9)

Go read them all. Or don't. I'm not your mom, I'm your Unix bestie. 💜

---

mwah 💋 — this has been the ./fs sources, October 2026 release, page mnt_unhold_writers(9). Now go unhold those writers, slay, and remember: hold first, unhold second. periodt. 🌸