write_seqcount_latch_end(9)

💅 write_seqcount_latch_end — Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual entry for write_seqcount_latch_end 💖 this is the girl whose whole job is closing the door behind you after a latch write, and honestly? she ate.

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🌸 NAME 🌸

write_seqcount_latch_end — end a seqcount_latch_t write section 🎀

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✨ SYNOPSIS ✨

void write_seqcount_latch_end (seqcount_latch_t *s );

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🎀 ARGUMENTS 🎀

• s — pointer to seqcount_latch_t 🫶 that's the latch you're closing out, no cap.

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💖 DESCRIPTION 💖

Marks the end of a seqcount_latch_t writer section — and the timing is everything 💅 you call this after all copies of the latch-protected data have been updated. Every single one. All the copies. Updated first, then you end the section. The way that order is not negotiable 😭

Think of it as the "okay we're done, you can look now" moment, except the readers are kernel code and there is no chill ✨

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🦋 SEE ALSO 🦋

it's giving family reunion — the whole seqlock.h crew lives in the kernel file ./include/linux/seqlock.h 🌈 and here they all are, bestie, every single one:

• 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)
• write_seqcount_invalidate(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)
• 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)

iykyk 💀 that's the whole group chat and yes they all have (9) after their names, we're being consistent.

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not me ending this page without the receipts 🙈 — this one lives under ./include/linux, dated October 2026, and it's filed as write_seqcount_latch_end(9). mwah, go update all your copies first 💋🦋