kunmap_local(9)

💖 NAME 💖

okay so this is kunmap_local(9) from the Kernel API Manual, and it's the function that unmaps a page mapped via kmap_local_page(). literally the cleanup bestie. slay. ✨

🦋 SYNOPSIS 🦋

kunmap_local (__addr );

🎀 ARGUMENTS 🎀

• __addr — an address within the page mapped. that's the whole argument, bestie 💅

🌸 DESCRIPTION 🌸

__addr can be any address within the mapped page. commonly it's the address return from kmap_local_page, but it can also include offsets — yes, offsets are allowed, no cap.

unmapping should be done in the reverse order of the mapping. like, reverse order, bestie 😭. see kmap_local_page for details.

🔥 SEE ALSO 🔥

• Kernel file ./include/linux/highmem-internal.h
• kunmap_atomic(9)

later bestie 🫶 — this one's from ./include/linux, dated October 2026, and the page is kunmap_local(9). mwah 💋