gfs2_open(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gfs2_open(9) — like, the Kernel API Manual page you didn't know you needed 🎀

okay bestie, gather round, because today we're learning about gfs2_open from the Kernel API Manual and honestly? it's giving "small function, big responsibilities" ✨

🌸 NAME 🌸

gfs2_open — open a file 🫶 (yes that's it, that's the whole job, iconic behavior honestly)

🦋 SYNOPSIS 🦋

int gfs2_open (struct inode *inode , struct file *file );

like look at her. two args. no drama. no cap. 💅

🌈 ARGUMENTS 🌈

  • inode — the inode to open 👑 your main character, fr fr
  • file — the struct file for this opening 🎀 like, this specific open, not some other open, keep up bestie

✨ DESCRIPTION ✨

okay so here's the tea ☕ — after atomic_open does its whole thing, gfs2_open is only used for opening files that are already cached. lowkey a glow-up-only situation, we're not building from scratch here 💅

but!! we must still get the glock for regular files 🫶 why? because we gotta make sure we have the file size uptodate for the large file check that lives in the common code. like the vibe check for big files, yk? 🔥

and before you panic — that's only an issue for regular files though 😌 everything else can chill, no glock stress needed 🧚

ngl the glock bit sounds scary but it's just making sure the size number isn't lying to you before the common code decides whether your file is "large" 💀

⭐ RETURN ⭐

errno — that's the whole return, bestie 😭 classic kernel behavior, returns the error number, slay

🍓 SEE ALSO 🍓

Kernel file ./fs/gfs2/file.c and like, the whole friend group 🫶:

and that's the whole page bestie!! brought to you by ./fs/gfs2 💜 dated October 2026 🌸 from the Kernel API Manual — go forth and open files responsibly, ily, mwah 🎀✨🦋

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