VFLUSH(9)

💅 VFLUSH(9) — like, the vnode flush era ✨

okay so bestie, welcome to VFLUSH(9), straight out of the Kernel Developer's Manual 🎀 this is the section-9 girlie who handles vnodes for a mount point, and honestly? she ate. no cap.

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🌸 NAME 🌸

vflush — flush vnodes for a mount point 💖 (yes that's the whole vibe: vnodes out, mount point clean, slay)

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✨ SYNOPSIS ✨

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

int
vflush(struct mount *mp, int rootrefs, int flags, struct thread *td);

like, copy it exactly bestie, headers and all 🫶 iykyk

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💜 DESCRIPTION 💜

so the vflush() function removes any vnodes in the vnode table that belong to the given mount structure. literally just snatching them out of the table. main character energy 🔥

its arguments are — brace yourself, there's four:

• mp — the mount point whose vnodes should be removed. like, the home base 🏠
• rootrefs — the number of references expected on the root vnode. vrele(9) will be invoked on the root vnode rootrefs times. so if you say 3, it's getting vrele(9)'d 3 times, periodt 💅
• flags — the flags indicating how vnodes should be handled. there's three of them and they're all lowkey important:
  • FORCECLOSE — if set, busy vnodes will be forcibly closed. yeah. forcibly. 😭 don't say i didn't warn you.
  • SKIPSYSTEM — if set, vnodes with the VV_SYSTEM flag set will be skipped. she's not getting involved 🙈
  • WRITECLOSE — if set, only regular files currently opened for writing will be removed. picky queen 💅
• td — the calling thread. the one doing the calling, obviously 🦋

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⭐ RETURN VALUES ⭐

a value of 0 is returned if the flush is successful 🎉 otherwise, EBUSY will be returned 😭 that's it, that's the whole return story, ngl.

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🌈 SEE ALSO 🌈

• vgone(9)
• vrele(9)

go read those too, bestie, they're literally in the same friend group 👑

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👑 AUTHORS 👑

this manual page was written by Chad David <davidc@acns.ab.ca>. ty king 🫶

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and that's the whole page fr fr — brought to you by Debian, dated November 21, 2001 💖 a vintage icon, we stan. bye bestie, go flush those vnodes ✨🍓