may_grant(9)

📦 version 7.3.1, in nixpkgs unstable

💅 may_grant — kernel API manual, bestie edition ✨

okay so this is may_grant from the gfs2 glock corner of the kernel, and yes we're getting into it 🫶

🌸 NAME 🌸

may_grant — check if it's ok to grant a new lock 🔥

✨ SYNOPSIS ✨

bool may_grant (struct gfs2_glock *gl , struct gfs2_holder *current_gh ,
struct gfs2_holder *gh );

like, it returns a bool, it takes three things, that's the whole vibe 💖

🎀 ARGUMENTS 🎀

  • gl — The glock 👑 this is the main character of the whole situation ngl
  • current_gh — One of the current holders of gl 🫶 literally just one of them, we'll get to why any of them works
  • gh — The lock request which we wish to grant 🙈 the new kid asking to sit with us

🦋 DESCRIPTION 🦋

okay so here's the tea ☕ with our current compatibility rules, if a glock has one or more active holders (that's the HIF_HOLDER flag being set, iykyk), any of those holders can be passed in as current_gh. literally any of them. they are all the same as far as compatibility with the new gh goes 💀 like it does not matter which one you hand over, the answer comes out identical.

Returns true if it's ok to grant the lock ✨ that's it, that's the whole function, and honestly? iconic.

👑 SEE ALSO 👑

Kernel file ./fs/gfs2/glock.c, plus the whole extended friend group:

and that's the page bestie 🎀 brought to you from ./fs/gfs2, dated October 2026, and it's still called may_grant(9) because we don't do name changes around here 💜 slay 🌈

📦 where this page comes from