generic___change_bit(9)

💫 generic___change_bit(9) 💫

okay so bestie, welcome to the Kernel API Manual — this is the page for generic___change_bit, and yes the triple underscore is on purpose, don't come for me 🫶

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✨ NAME ✨

generic___change_bit — toggles a bit in memory, that's the whole job, she's simple and she slays 💅

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🌸 SYNOPSIS 🌸

void generic___change_bit (unsigned long nr , volatile unsigned long
*addr );

literally that's it. void return, so she gives you nothing back — she just does the thing. main character energy fr fr 👑

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🎀 ARGUMENTS 🎀

• nr — the bit you want to change. like, which bit, bestie — point at it. 🎯
• addr — the address to start counting from. this is where the counting begins, so to speak. 📍

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕ — unlike change_bit, this function is non-atomic and may be reordered. and the way that matters: if it's called on the same region of memory simultaneously, the effect may be that only one operation succeeds.

💀 no cap, that's a real caveat — simultaneous calls on the same memory and only one of them may actually land. so maybe don't do that unless you know exactly what you're doing, iykyk.

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🌈 SEE ALSO 🌈

• Kernel file ./include/asm-generic/bitops/generic-non-atomic.h — go read it, she's iconic ✨
• generic___set_bit(9)
• generic___test_and_set_bit(9)
• generic___test_and_clear_bit(9)
• generic_test_bit(9)
• generic_test_bit_acquire(9)
• const_test_bit(9)

like a whole friend group of bit ops honestly, obsessed 🧚💜

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mmkay that's the whole page 🍓 this came out of ./include/asm-generic/bitops, dated October 2026, and it's generic___change_bit(9) from the Kernel API Manual — k bye, ily, go toggle a bit responsibly 💖🌸