resource_alignf(9)

Okay bestie, this is resource_alignf(9) from the Kernel API Manual — the resource alignment callback page. It’s giving kernel-internals realness, but make it make sense. 💖

🌸 NAME 🌸

resource_alignf — Resource alignment callback. That’s the whole name, iconic and to the point. ✨

🦋 SYNOPSIS 🦋

resource_size_t resource_alignf (void *data , const struct resource *res , const struct resource *empty_res , resource_size_t size , resource_size_t align );

🎀 ARGUMENTS 🎀

• data — Private data used by the callback. It’s the callback’s own little stash, iykyk. 🙈
• res — Resource candidate range (an empty resource space). This is the candidate range, and it’s an empty resource space. 💅
• empty_res — Empty resource range without alignment applied. No alignment has been applied here, bestie. 🫶
• size — The minimum size of the empty space. Minimum size, not vibe size. 📏
• align — Alignment from the constraints. It comes from the constraints, periodt. ✨

🔥 DESCRIPTION 🔥

This callback is your helper for calculating resource placement and alignment beyond the min, max, and align fields in the struct resource_constraint. Lowkey powerful, highkey useful. 👑

🌈 RETURN 🌈

Start address for the resource. That’s the return value, bestie — the start address for the resource. ⭐

💜 SEE ALSO 💜

• Kernel file ./include/linux/ioport.h — struct resource_constraint(9), resource_set_size(9), resource_set_range(9)

mwah 💋 — this one’s from the ./include/linux source/version, dated October 2026.