dma_resv_is_locked(9)

💅 dma_resv_is_locked(9)

okay so bestie, welcome to the Kernel API Manual ✨ — this little angel lives in section 9 of the kernel docs and it's literally just a vibe check for a reservation object 🎀

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✨ NAME ✨

dma_resv_is_locked — is the reservation object locked 👀

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🌸 SYNOPSIS 🌸

bool dma_resv_is_locked (struct dma_resv *obj );

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🦋 ARGUMENTS 🦋

• obj — the reservation object 💖 (yes that's the whole argument list, she's low maintenance)

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🌈 DESCRIPTION 🌈

Returns true if the mutex is locked, false if unlocked. That's it, that's the whole tea ☕ no cap, she just tells you the status and dips 🧚

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⭐ SEE ALSO ⭐

Kernel file ./include/linux/dma-resv.h — and the whole squad of associated pages, fr fr:

• 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(9)
• dma_resv_lock_slow_interruptible(9)
• dma_resv_trylock(9)
• dma_resv_locking_ctx(9)
• dma_resv_unlock(9)

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💀 reminder bestie: this page is the read-only one. It tells you whether the mutex is locked — it does not lock anything for you. For the actual locking behaviour go read the dma_resv_lock(9) crew above, iykyk 🫶

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and that's the whole page, slay ✨ she was written up in October 2026 and she ships out of ./include/linux — iconic, no notes 👑💜