done_seqretry(9)

💅 done_seqretry(9) 💅

okay bestie, welcome to the Kernel API Manual page for done_seqretry(9). this is the little end-of-reader-section moment, and it is lowkey iconic in a very kernel-specific way. 🫶

🌸 NAME 🌸

done_seqretry — end seqlock_t "locking or lockless" reader section

✨ SYNOPSIS ✨

void done_seqretry (seqlock_t *lock , int seq );

🎀 ARGUMENTS 🎀

• lock — Pointer to seqlock_t. that's the seqlock bestie in question. 💖
• seq — count, from read_seqbegin_or_lock. literally the count from there, no cap.

💖 DESCRIPTION 💖

so done_seqretry finishes the seqlock_t read side critical section that was started with read_seqbegin_or_lock and validated by need_seqretry. that's the whole vibe: this is the ending move for that reader section. periodt. ✨

🦋 SEE ALSO 🦋

Kernel file ./include/linux/seqlock.h — and the whole seqcount/seqlock friend group is right here:

• 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)
• 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)
• read_seqbegin_or_lock_irqsave(9)
• done_seqretry_irqrestore(9)
• scoped_seqlock_read(9)

mwah 💋 that's the page, bestie. it's from the Kernel API Manual, source path ./include/linux, dated October 2026, and the title on the tin is done_seqretry(9). 💜