gfs2_log_write_page(9)

📦 version 7.3.1, in nixpkgs unstable

💫 gfs2_log_write_page — the Kernel API Manual moment 💫

okay bestie, so this one's from the Kernel API Manual (yes, the big-league docs) and honestly it's a tiny little function with a big job. let me put you on 🫶

🌸 NAME 🌸

gfs2_log_write_page — write one block stored in a page, into the log ✨

like, literally just one block. one. block. into the log. that's the whole vibe 💅

🦋 SYNOPSIS 🦋

void gfs2_log_write_page (struct gfs2_sbd *sdp , struct page *page );

returns nothing (void, she gives nothing back, queen behavior 👑), takes two things, and that's it.

🎀 ARGUMENTS 🎀

  • sdp — the superblock 💖
  • page — the struct page (yes bestie, the struct page, that's the whole description and we're moving on 🏃‍♀️)

⭐ DESCRIPTION ⭐

so what she actually does: this writes the first block-sized part of the page into the log. only the first block-sized part, not the whole page, don't get it twisted 🙈

now the important tea, and i need you to listen because this is the part that will bite you:

the page must have been allocated from the gfs2_page_pool mempool. no exceptions. that's the whole rule 🚨

and also:

after this has been called, ownership has been transferred — the page may be freed at any time 😭

so like, don't touch it after. don't peek at it. don't be weird about it. she's not yours anymore, you handed her off, periodt 💀

🔥 SEE ALSO 🔥

kernel file ./fs/gfs2/lops.c plus the whole friend group:

iykyk 🌈

and that's the page!! sourced from ./fs/gfs2, dated October 2026, and she's filed under gfs2_log_write_page(9) — go read her siblings, mwah 💜✨

📦 where this page comes from