write_seqcount_invalidate(9)

💖 write_seqcount_invalidate(9) 💖

okay bestie, this is the Kernel API Manual entry for write_seqcount_invalidate(9), and it is lowkey serving “invalidate the read side, no cap.” let’s get into it 🫶

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✨ NAME ✨

write_seqcount_invalidate — invalidate in-progress seqcount_t read side operations 💅

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🌸 SYNOPSIS 🌸

write_seqcount_invalidate (s );

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🦋 ARGUMENTS 🦋

• s — pointer to seqcount_t or any of the seqcount_LOCKNAME_t variants. yes ma’am, that pointer is the whole moment 🌟

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✨ DESCRIPTION ✨

After write_seqcount_invalidate, no seqcount_t read side operations will complete successfully and see data older than this. periodt 💅 that’s the entire vibe: the read side does not get to finish successfully while seeing older data.

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💅 SEE ALSO 💅

the kernel file is ./include/linux/seqlock.h, and the whole cross-reference squad is right here — literally every single one, bestie 🎀

• seqcount_init(9)
• SEQCNT_ZERO(9)
• __read_seqcount_begin(9)
• raw_read_seqcount_begin(9)
• read_seqcount_begin(9)
• raw_read_seqcount(9)
• raw_seqcount_try_begin(9)
• raw_seqcount_begin(9)
• __read_seqcount_retry(9)
• read_seqcount_retry(9)
• raw_write_seqcount_begin(9)
• raw_write_seqcount_end(9)
• write_seqcount_begin_nested(9)
• write_seqcount_begin(9)
• write_seqcount_end(9)
• raw_write_seqcount_barrier(9)
• SEQCNT_LATCH_ZERO(9)
• seqcount_latch_init(9)
• raw_read_seqcount_latch(9)
• read_seqcount_latch(9)
• raw_read_seqcount_latch_retry(9)
• read_seqcount_latch_retry(9)
• raw_write_seqcount_latch(9)
• write_seqcount_latch_begin(9)
• write_seqcount_latch(9)
• write_seqcount_latch_end(9)
• seqlock_init(9)
• DEFINE_SEQLOCK(9)
• read_seqbegin(9)
• read_seqretry(9)
• write_seqlock(9)
• write_sequnlock(9)
• write_seqlock_bh(9)
• write_sequnlock_bh(9)
• write_seqlock_irq(9)
• write_sequnlock_irq(9)
• write_seqlock_irqsave(9)
• write_sequnlock_irqrestore(9)
• read_seqlock_excl(9)
• read_sequnlock_excl(9)
• read_seqlock_excl_bh(9)
• read_sequnlock_excl_bh(9)
• read_seqlock_excl_irq(9)
• read_sequnlock_excl_irq(9)
• read_seqlock_excl_irqsave(9)
• read_sequnlock_excl_irqrestore(9)
• read_seqbegin_or_lock(9)
• need_seqretry(9)
• done_seqretry(9)
• read_seqbegin_or_lock_irqsave(9)
• done_seqretry_irqrestore(9)
• scoped_seqlock_read(9)

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okay bye bestie, signed off from the ./include/linux source corner, October 2026 edition 💜✨