dma_resv_lock_slow(9)

✨ dma_resv_lock_slow(9) ✨

okay bestie, so this is a page straight out of the Kernel API Manual, and it's literally about dma_resv_lock_slow — the slowpath way to lock a reservation object 🎀 no cap, the name says it all.

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🌸 NAME 🌸

dma_resv_lock_slow — slowpath lock the reservation object 💅

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🦋 SYNOPSIS 🦋

void dma_resv_lock_slow (struct dma_resv *obj , struct ww_acquire_ctx
*ctx );

Like, that's the whole signature. Short, sweet, iconic. ✨

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🎀 ARGUMENTS 🎀

• obj — the reservation object. this is the thing you're locking, bestie.
• ctx — the locking context. the vibe-check paperwork for the lock, fr fr.

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💖 DESCRIPTION 💖

So here's the tea: this function acquires the reservation object after a die case. and yeah, it will sleep until the lock becomes available 😴 like it's not gonna spin or throw a tantrum, it just waits. patient main character energy honestly.

Also go look at dma_resv_lock while you're here — they're besties 🫶

And for the interruptible variant, see dma_resv_lock_slow_interruptible — that's the one that can be woken up mid-wait. iykyk.

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🔥 SEE ALSO 🔥

Kernel file: ./include/linux/dma-resv.h

• enum dma_resv_usage(9)
• dma_resv_usage_rw(9)
• struct dma_resv(9)
• struct dma_resv_iter(9)
• dma_resv_iter_begin(9)
• dma_resv_iter_end(9)
• dma_resv_iter_usage(9)
• dma_resv_iter_is_restarted(9)
• dma_resv_for_each_fence_unlocked(9)
• dma_resv_for_each_fence(9)
• dma_resv_lock(9)
• dma_resv_lock_interruptible(9)
• dma_resv_lock_slow_interruptible(9)
• dma_resv_trylock(9)
• dma_resv_is_locked(9)
• dma_resv_locking_ctx(9)
• dma_resv_unlock(9)

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ngl the whole dma-resv fam is in that list — read the friends too, bestie 💜

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and that's the page!! 🌈 it lives in ./include/linux and the version is stamped October 2026 — so like, future-core of this manpage, periodt 👑💅 mwah, go lock something slowly 🍓