vchan_next_desc(9)

💖 vchan_next_desc(9) 💖

okay so bestie, we're deep in the Kernel API Manual, section 9, and today's main character is vchan_next_desc(9) ✨. It's giving "look but don't touch" energy 👀💅.

🌸 NAME 🌸

vchan_next_desc — peek at the next descriptor to be processed 🫶

✨ SYNOPSIS ✨

struct virt_dma_desc * vchan_next_desc (struct virt_dma_chan *vc );

🎀 ARGUMENTS 🎀

• vc — the virtual channel to obtain the descriptor from 💖

🦋 DESCRIPTION 🦋

Real talk: vc.lock must be held by the caller, no cap 🔒😭. That's the requirement, bestie — don't skip it.

👑 SEE ALSO 👑

Kernel file ./drivers/dma/virt-dma.h is right there for the source-y goodness, and these cuties are linked too:

• vchan_tx_prep(9)
• vchan_issue_pending(9)
• vchan_cookie_complete(9)
• vchan_vdesc_fini(9)
• vchan_cyclic_callback(9)
• vchan_terminate_vdesc(9)
• vchan_get_all_descriptors(9)
• vchan_synchronize(9)

okay that's the page, periodt 💅✨. Cute sign-off: this one's from ./drivers/dma, dated October 2026, and it's vchan_next_desc(9) signing off 🎀🦋.