jbd2_journal_destroy(9)

📦 version 7.3.1, in nixpkgs unstable

💅 jbd2_journal_destroy(9) 💅

okay bestie, welcome to the Kernel API Manual — yes, this is the manual for people who write kernel code, and yes, you're gonna slay this one. it's a little one. a snack, even. 🍓

🌸 NAME 🌸

jbd2_journal_destroy — release a journal_t structure. that's it. that's the whole vibe. it's the "we're so done here" function. 🎀

✨ SYNOPSIS ✨

int jbd2_journal_destroy (journal_t *journal );

look at her. one function, one argument, returns an int. iconic. 👑

🦋 ARGUMENTS 🦋

  • journal — the journal to act on. like, the actual journal you want to release. that one. 🫶

💖 DESCRIPTION 💖

so here's the tea, bestie: you call jbd2_journal_destroy to release a journal_t structure once it is no longer in use by the journaled object. read that again. once it is no longer in use. do not come for this function while your journal is still out there being used by the journaled object, okay? that's not the moment. 🙈

and here's the important bit — it returns <0 if we couldn't clean up the journal. so a negative return means the cleanup didn't go through. lowkey you should check that. ngl. 😭

fr fr: negative return = cleanup failed. don't just ignore it and walk away like nothing happened. 💀

🔥 SEE ALSO 🔥

the whole friend group, in the kernel file ./fs/jbd2/journal.c:

all of them. every single one. no skipping, we don't do that here. 💜

and that's the page, bestie!! go release that journal and live your main character life. 🌈⭐

this lil masterpiece lives in ./fs/jbd2, and it was brought to you by October 2026 — yeah, from the future, and it ate. periodt. 💅✨

📦 where this page comes from