dma_fence_get_rcu(9)

💖 dma_fence_get_rcu(9) 💖

okay bestie, welcome to the Kernel API Manual — this page is all about dma_fence_get_rcu(9), and it’s lowkey a tiny little refcount situation. no cap. ✨

🌸 NAME 🌸

dma_fence_get_rcu — get a fence from a dma_resv_list with rcu read lock. that’s the vibe. 🫶

✨ SYNOPSIS ✨

struct dma_fence * dma_fence_get_rcu (struct dma_fence *fence );

🎀 ARGUMENTS 🎀

• fence — the fence to increase refcount of. that’s it, that’s the arg 💅

🦋 DESCRIPTION 🦋

Okay so here’s the whole plot: this function returns NULL if no refcount could be obtained, or it returns the fence. literally that simple, bestie 😭💖

🔥 SEE ALSO 🔥

go read these too — the kernel fam is expansive and honestly kinda iconic:

• Kernel file ./include/linux/dma-fence.h
• struct dma_fence(9)
• struct dma_fence_cb(9)
• struct dma_fence_ops(9)
• dma_fence_was_initialized(9)
• dma_fence_put(9)
• dma_fence_get(9)
• dma_fence_get_rcu_safe(9)
• dma_fence_spinlock(9)
• dma_fence_lock_irqsave(9)
• dma_fence_unlock_irqrestore(9)
• dma_fence_assert_held(9)
• Safe external access to driver provided object members(9)
• dma_fence_is_signaled_locked(9)
• dma_fence_is_signaled(9)
• __dma_fence_is_later(9)
• dma_fence_is_later(9)
• dma_fence_is_later_or_same(9)
• dma_fence_later(9)
• dma_fence_get_status_locked(9)
• dma_fence_set_error(9)
• dma_fence_timestamp(9)
• dma_fence_wait(9)
• dma_fence_is_array(9)
• dma_fence_is_chain(9)
• dma_fence_is_container(9)

okay bye bestie! source/version line: ./include/linux · date: October 2026 · page: dma_fence_get_rcu(9) 💖✨