write_seqcount_end(9)

💖 NAME 💖

okay so bestie, welcome to write_seqcount_end(9) in the Kernel API Manual — this one is literally about ending a seqcount_t write side critical section. that's the whole name, and it ate ✨

🦋 SYNOPSIS 🦋

write_seqcount_end (s );

(the spacing is exactly like that, bestie — don't come for me 💅)

🎀 ARGUMENTS 🎀

• s — a pointer to a seqcount_t or any of the seqcount_LOCKNAME_t variants. yep, that's your one job here 🫶

🌸 CONTEXT 🌸

Preemption gets automatically re-enabled if and only if the seqcount write serialization lock is associated, and preemptible. both bits matter — this is not a "close enough" situation, iykyk 😭

👑 SEE ALSO 👑

Kernel file: ./include/linux/seqlock.h — and the whole seqlock friend group is here, no cap:

• 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)
• 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)
• 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)

mwah 💖 this page lives in ./include/linux and is dated October 2026, and you just finished the write_seqcount_end(9) manual page. slay — go end that write side critical section responsibly 🎀✨