drbd_al_shrink(9)

💅 drbd_al_shrink(9) — a Kernel API Manual moment

okay so bestie, welcome to the drbd_al_shrink page from the Kernel API Manual ✨ this one is short and sweet and honestly kind of iconic in a quiet way 🎀

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🌸 NAME 🌸

drbd_al_shrink — Removes all active extents form the activity log 💫

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✨ SYNOPSIS ✨

void drbd_al_shrink (struct drbd_device *device );

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🦋 ARGUMENTS 🦋

• device — DRBD device. that's the one, that's the whole vibe 🫶

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💖 DESCRIPTION 💖

So what it does: it removes all active extents form the activity log, and before it does that it waits until the reference count of each entry has dropped to 0 first — like, of course it waits, she's not messy 💅

Real talk though: you need to lock device->act_log with lc_try_lock / lc_unlock. Do not skip this, bestie, that's the whole safety rail 🙈

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🔥 SEE ALSO 🔥

Kernel file ./drivers/block/drbd/drbd_actlog.c:

• drbd_rs_begin_io(9)
• drbd_try_rs_begin_io(9)
• drbd_rs_cancel_all(9)
• drbd_rs_del_all(9)

like, go read the whole friend group, they're all connected iykyk 🌈

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and that's the page!! 🎀 it lives in ./drivers/block/drbd, stamped October 2026 — go off, kernel file, we love you 💜⭐