find_next_zero_bit(9)

💅 find_next_zero_bit(9)

ok so bestie, welcome to the Kernel API Manual — today we're decoding find_next_zero_bit, and honestly? she's an icon. a little bit-finder with main character energy. let's get into it 🎀

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✨ NAME ✨

find_next_zero_bit — find the next cleared bit in a memory region 🦋

like, literally, she goes looking for a 0. that's the whole vibe check. no cap.

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🌸 SYNOPSIS 🌸

unsigned long find_next_zero_bit (const unsigned long *addr , unsigned long size , unsigned long offset );

three arguments, one unsigned long back. it's giving "simple but powerful", and honestly we stan 💖

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🧚 ARGUMENTS 🧚

• addr — the address to base the search on. this is where the hunt begins, bestie 🗺️
• size — the bitmap size in bits. aka how far she's allowed to look before she gives up 🙈
• offset — the bitnumber to start searching at. so like, the starting line — she doesn't start from zero unless you tell her to ⭐

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👑 DESCRIPTION 👑

Returns the bit number of the next zero bit 💅

If no bits are zero, returns size.

that's it. that's the whole thing. she searches, she finds the next cleared bit, she hands you the number, she slays, she leaves 🔥 and if literally zero bits are zero (lol, the irony), she just returns size and walks away, unbothered. queen behaviour fr fr 🌈

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💜 SEE ALSO 💜

Kernel file ./tools/include/linux/find.h plus the whole bestie squad:

• find_next_bit(9)
• find_next_and_bit(9)
• find_first_bit(9)
• find_first_and_bit(9)
• find_first_zero_bit(9)

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ok that's the page!! 🫶 she lives in ./tools/include/linux, dated October 2026, and she's filed under find_next_zero_bit(9) — go forth and find those zeroes, bestie, i believe in you 💀💖✨