lookup_mnt(9)

💅 lookup_mnt

okay so real talk, this one lives in the Kernel API Manual and honestly? it's a little baddie with one job and she does it flawlessly. no notes. let's get into it 🎀

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✨ NAME ✨

lookup_mnt — returns the child mount that's mounted at a given location, bestie. that's it. that's the whole vibe.

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🌸 SYNOPSIS 🌸

struct vfsmount * lookup_mnt (const struct path *path );

like look at her. one argument. returns a struct vfsmount *. iconic behavior honestly 🦋

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🎀 ARGUMENTS 🎀

• path — the location in the namespace you're curious about. the spot you're like "hmm what's mounted here" about. iykyk 💅

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💖 DESCRIPTION 💖

so here's the tea: lookup_mnt acquires and returns a new reference to the mount sitting at the location you passed in ✨

and if like... nothing is mounted there? she returns NULL. no mount, no drama, no reference. that's the whole deal 🫶

ok but for real, note the words acquires a new reference — that's not just flavor text, bestie, that's the actual behavior described here. don't come for me if you ignore it 😭

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👑 SEE ALSO 👑

all the sisters and cousins in the family, no gatekeeping 💜

• Kernel file ./fs/namespace.c
• 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)
• mnt_unhold_writers(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)

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🌈 and that's the page!! mwah 💋 this little cutie comes to you from ./fs and she's dated October 2026 — write it down, remember it, put it on your vision board ⭐ lookup_mnt(9) out. slay 🧚‍♀️✨