VFS_UNBUSY(9)

💅 VFS_UNBUSY — unbusy a mount point 💅

okay so bestie, welcome to VFS_UNBUSY(9), aka section 9 of the Kernel Developer's Manual. yes you, a kernel dev, slaying. let's get into it ✨

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🌸 SYNOPSIS 🌸

first things first, you gotta pull in the headers, no cap:

#include <sys/param.h>
#include <sys/mount.h>

then the actual function signature, literally exactly this:

void
vfs_unbusy(struct mount *mp);

like, returns void, takes one pointer, that's the whole vibe 🎀

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✨ DESCRIPTION ✨

so vfs_unbusy() does exactly what it says on the tin — it un-busies a mount point 😌 the way it works is it just decrements the reference count of a mount point. that's it. that's the function.

and like, lowkey the important part: that reference count was typically incremented earlier by calling vfs_busy(9) before this call. so it's giving "put it back the way you found it" energy. you busy it, you unbusy it. balance. harmony. 🦋

here's the argument, bestie:

• mp — the mount point to unbusy. the one. the main character. 👑

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👀 SEE ALSO 👀

• vfs_busy(9) — the other half of this whole situation, iykyk

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🫶 AUTHORS 🫶

this manual page was written by Chad David <davidc@acns.ab.ca>. iconic of him honestly, thank you Chad 💜

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reminder bestie: always pair your vfs_busy(9) with a vfs_unbusy() — leaving a mount point busy forever is not the vibe 🔥

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mwah, that's the page! this lil gem came from Debian, dated June 14, 2010, so it's been serving looks for a minute 🌈✨ go forth and unbusy those mounts, you absolute kernel legend 🧚💖