mem_is_zero(9)

💖 mem_is_zero(9) 💖

hiii bestie!! welcome to the Kernel API Manual ✨ this page is literally all about mem_is_zero, and it is lowkey the simplest vibe check in the kernel: is this memory area just a bunch of 0's? let's get into it 🫶

✨ NAME ✨

mem_is_zero — Check if an area of memory is all 0's. 💅

🦋 SYNOPSIS 🦋

bool mem_is_zero (const void *s , size_t n );

🎀 ARGUMENTS 🎀

• s — the memory area 👀 like, the chunk we're checking.
• n — the size of the area 📏

💖 RETURN 💖

True if the area of memory is all 0's. periodt. ✅

🌈 SEE ALSO 🌈

the Kernel file is ./include/linux/string.h, and these are the see-also besties, no cap:

• memdup_array_user(9)
• vmemdup_array_user(9)
• strscpy(9)
• strscpy_pad(9)
• sysfs_match_string(9)
• memzero_explicit(9)
• kbasename(9)
• strtomem_pad(9)
• strtomem(9)
• memtostr(9)
• memtostr_pad(9)
• memset_after(9)
• memset_startat(9)
• str_has_prefix(9)
• strstarts(9)
• strends(9)

mwah 💋 okay that's the whole page!! source/version: ./include/linux; date: October 2026; title: mem_is_zero(9) — bye bestie, go check ur memory responsibly 🧚💜