uds_prefetch_range(9)

✨ uds_prefetch_range(9) ✨

okay so bestie, welcome to the glow-up era of cache performance 💅 this one's a kernel API page, and honestly? it's giving "small function, big main character energy" 🎀

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🌸 NAME 🌸

uds_prefetch_range — the way this function literally minimizes cache-miss latency by attempting to move a range of addresses into a CPU cache before they are accessed. no cap, that's the whole vibe 🦋

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✨ SYNOPSIS ✨

void uds_prefetch_range (const void *start , unsigned int size , bool
for_write );

look at her. three args, void return, zero drama 🙈

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💖 ARGUMENTS 💖

• start — the starting address to fetch. and bestie, listen: it may be invalid 😭 that's not a typo, that's the actual contract, so don't come for me
• size — the number of bytes in the address range 🍓
• for_write — this one must be constant at compile time ⭐ like, non-negotiable, compile-time-constant or nothing. it's false if you're reading, and true if you're writing 👑

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/md/dm-vdo/cpu.h 🌈
• uds_prefetch_address(9) 💜

lowkey the energy here is "trust me bro, the compiler will handle it" — but fr fr, keep for_write constant at compile time or the vibe check fails 💀

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that's the whole page, bestie — go forth and prefetch responsibly 🫶

mwah 💋 — brought to you by the ./drivers/md/dm-vdo crew, October 2026 edition 🧚