jbd2_journal_unlock_updates(9)

✨ NAME ✨

okay bestie, welcome to jbd2_journal_unlock_updates(9) from the Kernel API Manual — this is the page for jbd2_journal_unlock_updates, and its whole NAME situation is release barrier 💅.

🦋 SYNOPSIS 🦋

literally the signature, no cap:

void jbd2_journal_unlock_updates (journal_t *journal );

🎀 ARGUMENTS 🎀

• journal — Journal to release the barrier on. 🫶

💖 DESCRIPTION 💖

Release a transaction barrier obtained with jbd2_journal_lock_updates. That's the whole assignment, fr fr 🎀.

Should be called without the journal lock held. Yes, bestie, without it — that part is important 🚨.

Think of it as the "okay, barrier era over" button for the transaction barrier you got from jbd2_journal_lock_updates — and the page is very clear that you call it with the journal lock not held. Slay, but safely 💅.

🌈 SEE ALSO 🌈

Kernel file: ./fs/jbd2/transaction.c — go read it, bestie 📖. Then the whole squad:

• jbd2_journal_start(9)
• jbd2_journal_start_reserved(9)
• jbd2_journal_extend(9)
• jbd2__journal_restart(9)
• jbd2_journal_lock_updates(9)
• jbd2_journal_get_write_access(9)
• jbd2_journal_get_create_access(9)
• jbd2_journal_get_undo_access(9)
• jbd2_journal_set_triggers(9)
• jbd2_journal_dirty_metadata(9)
• jbd2_journal_forget(9)
• jbd2_journal_stop(9)
• jbd2_journal_try_to_free_buffers(9)
• jbd2_journal_invalidate_folio(9)

okay that's the page, mwah 💋 — source/version ./fs/jbd2, date October 2026, manual name jbd2_journal_unlock_updates(9). periodt.