dma_resv_wait_timeout(9)

📦 version 7.3.1, in nixpkgs unstable

💖 dma_resv_wait_timeout(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this one's all about waiting on a reservation object's fences like the patient main character you are 🫶

🌸 NAME 🌸

dma_resv_wait_timeout — wait on reservation's objects fences ⏳

✨ SYNOPSIS ✨

long dma_resv_wait_timeout (struct dma_resv *obj , enum dma_resv_usage
usage , bool intr , unsigned long timeout );

🎀 ARGUMENTS 🎀

  • obj — the reservation object, aka the thing we're literally waiting on 💅
  • usage — controls which fences to include, see enum dma_resv_usage. iykyk 🔥
  • intr — if true, do interruptible wait (so a signal can come through and wake you up, no cap) 😭
  • timeout — timeout value in jiffies, or zero to return immediately 🕐

🦋 DESCRIPTION 🦋

Callers are not required to hold specific locks — but maybe hold dma_resv_lock already. 👀 That's the whole vibe check, fr fr.

⭐ RETURNS ⭐

Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or greater than zero on success. slay 🎉

ngl bestie, watch those return values — -ERESTARTSYS is the "I got interrupted" one, 0 means you ran out of time, and anything greater than zero means you ate and left no crumbs 👑

🌈 SEE ALSO 🌈

Kernel file ./drivers/dma-buf/dma-resv.c, plus the whole friend group 💜:

okay that's the whole page bestie, no notes 💅

source path: ./drivers/dma-buf · date: October 2026 · page: dma_resv_wait_timeout(9) — mwah, go wait on those fences responsibly 🧚💖

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