gfs2_check_blk_type(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gfs2_check_blk_type(9)

okay so this is a page from the Kernel API Manual — yes, the kernel has its own manual, and yes, it's iconic for that 🌈

✨ NAME ✨

gfs2_check_blk_type — literally just checking what type of block something is 🕵️‍♀️

🌸 SYNOPSIS 🌸

int gfs2_check_blk_type (struct gfs2_sbd *sdp , u64 no_addr , unsigned
int type );

like, that's the whole function signature bestie, no cap 💅

🎀 ARGUMENTS 🎀

  • sdp — The superblock 👑 (the main character, fr)
  • no_addr — The block number we're checking, iykyk
  • type — The block type we are looking for 🔍

🦋 DESCRIPTION 🦋

okay so first things first: the inode glock of no_addr must be held. like, that's a requirement, not a suggestion 🫶

The type you check for is either GFS2_BLKST_DINODE or GFS2_BLKST_UNLINKED. And checking for type GFS2_BLKST_FREE or GFS2_BLKST_USED? that would make no sense 💀 so don't, bestie.

⭐ RETURN ⭐

  • 0 — if the block type matches the expected type ✅ slay
  • -ESTALE — if it doesn't match 😭
  • -ve errno — if something went wrong while checking 🙈

💜 SEE ALSO 💜

Kernel file ./fs/gfs2/rgrp.c — and here's the whole squad, fr fr:

💖 and that's the whole thing! go check those block types, bestie — main character energy only 🧚‍♀️

kisses, this page came from ./fs/gfs2 and it's dated October 2026 — periodt, that's a wrap 🍓💜

📦 where this page comes from