RESERVATION OBJECT OVERVIEW(9)

💅 Reservation Object Overview(9) 💅

okay bestie, this is the Kernel API Manual page for Reservation Object Overview(9) — and it's lowkey iconic, no cap. 🦋

✨ DESCRIPTION ✨

So the reservation object is literally a mechanism to manage a container of dma_fence object associated with a resource. A reservation object can have any number of fences attaches to it — like, a whole group chat of them. 💬

Each fence carries an usage parameter, and that parameter determines how the operation represented by the fence is using the resource. The RCU mechanism is used to protect read access to fences from locked write-side updates — it's giving bodyguard energy, fr fr. 🛡️

See struct dma_resv for more details. 👑

🌈 SEE ALSO 🌈

Kernel file ./drivers/dma-buf/dma-resv.c says hi — here's the whole friend group, go check them out: 💖

• dma_resv_init(9)
• dma_resv_fini(9)
• dma_resv_reserve_fences(9)
• dma_resv_reset_max_fences(9)
• dma_resv_add_fence(9)
• dma_resv_replace_fences(9)
• dma_resv_iter_first_unlocked(9)
• dma_resv_iter_next_unlocked(9)
• dma_resv_iter_first(9)
• dma_resv_iter_next(9)
• dma_resv_copy_fences(9)
• dma_resv_get_fences(9)
• dma_resv_get_singleton(9)
• dma_resv_wait_timeout(9)
• dma_resv_set_deadline(9)
• dma_resv_test_signaled(9)
• dma_resv_describe(9)

mwah 💋 — this cutie comes from source/version ./drivers/dma-buf, dated October 2026, and it's the Reservation Object Overview(9) page. periodt. 🫶✨