raw_atomic_long_fetch_dec(9)

🌸 NAME

okay bestie, welcome to the Kernel API Manual page for raw_atomic_long_fetch_dec(9) 💅

raw_atomic_long_fetch_dec — atomic decrement with full ordering

✨ SYNOPSIS

long raw_atomic_long_fetch_dec (atomic_long_t *v );

🎀 ARGUMENTS

• v — pointer to atomic_long_t

💖 DESCRIPTION

So here's the tea: it atomically updates v to (v - 1) with full ordering. no cap. 🫶

This one is safe to use in noinstr code; everywhere else, the move is to prefer atomic_long_fetch_dec, bestie. ✨

🔥 RETURN

You get the original value of v handed back to you — iconic behavior, honestly. 👑

🌈 SEE ALSO

• Kernel file: ./include/linux/atomic/atomic-long.h
• read/set crew: raw_atomic_long_read(9), raw_atomic_long_read_acquire(9), raw_atomic_long_set(9), raw_atomic_long_set_release(9)
• add squad: raw_atomic_long_add(9), raw_atomic_long_add_return(9), raw_atomic_long_add_return_acquire(9), raw_atomic_long_add_return_release(9), raw_atomic_long_add_return_relaxed(9), raw_atomic_long_fetch_add(9), raw_atomic_long_fetch_add_acquire(9), raw_atomic_long_fetch_add_release(9), raw_atomic_long_fetch_add_relaxed(9)
• sub squad: raw_atomic_long_sub(9), raw_atomic_long_sub_return(9), raw_atomic_long_sub_return_acquire(9), raw_atomic_long_sub_return_release(9), raw_atomic_long_sub_return_relaxed(9), raw_atomic_long_fetch_sub(9), raw_atomic_long_fetch_sub_acquire(9), raw_atomic_long_fetch_sub_release(9), raw_atomic_long_fetch_sub_relaxed(9)
• inc squad: raw_atomic_long_inc(9), raw_atomic_long_inc_return(9), raw_atomic_long_inc_return_acquire(9), raw_atomic_long_inc_return_release(9), raw_atomic_long_inc_return_relaxed(9), raw_atomic_long_fetch_inc(9), raw_atomic_long_fetch_inc_acquire(9), raw_atomic_long_fetch_inc_release(9), raw_atomic_long_fetch_inc_relaxed(9)
• dec squad: raw_atomic_long_dec(9), raw_atomic_long_dec_return(9), raw_atomic_long_dec_return_acquire(9), raw_atomic_long_dec_return_release(9), raw_atomic_long_dec_return_relaxed(9), raw_atomic_long_fetch_dec_acquire(9), raw_atomic_long_fetch_dec_release(9), raw_atomic_long_fetch_dec_relaxed(9)
• and crew: raw_atomic_long_and(9), raw_atomic_long_fetch_and(9), raw_atomic_long_fetch_and_acquire(9), raw_atomic_long_fetch_and_release(9), raw_atomic_long_fetch_and_relaxed(9)
• andnot crew: raw_atomic_long_andnot(9), raw_atomic_long_fetch_andnot(9), raw_atomic_long_fetch_andnot_acquire(9), raw_atomic_long_fetch_andnot_release(9), raw_atomic_long_fetch_andnot_relaxed(9)
• or crew: raw_atomic_long_or(9), raw_atomic_long_fetch_or(9), raw_atomic_long_fetch_or_acquire(9), raw_atomic_long_fetch_or_release(9), raw_atomic_long_fetch_or_relaxed(9)
• xor crew: raw_atomic_long_xor(9), raw_atomic_long_fetch_xor(9), raw_atomic_long_fetch_xor_acquire(9), raw_atomic_long_fetch_xor_release(9), raw_atomic_long_fetch_xor_relaxed(9)
• xchg crew: raw_atomic_long_xchg(9), raw_atomic_long_xchg_acquire(9), raw_atomic_long_xchg_release(9), raw_atomic_long_xchg_relaxed(9)
• cmpxchg crew: raw_atomic_long_cmpxchg(9), raw_atomic_long_cmpxchg_acquire(9), raw_atomic_long_cmpxchg_release(9), raw_atomic_long_cmpxchg_relaxed(9)
• try_cmpxchg crew: raw_atomic_long_try_cmpxchg(9), raw_atomic_long_try_cmpxchg_acquire(9), raw_atomic_long_try_cmpxchg_release(9), raw_atomic_long_try_cmpxchg_relaxed(9)
• test besties: raw_atomic_long_sub_and_test(9), raw_atomic_long_dec_and_test(9), raw_atomic_long_inc_and_test(9)
• add_negative crew: raw_atomic_long_add_negative(9), raw_atomic_long_add_negative_acquire(9), raw_atomic_long_add_negative_release(9), raw_atomic_long_add_negative_relaxed(9)
• unless/conditional crew: raw_atomic_long_fetch_add_unless(9), raw_atomic_long_add_unless(9), raw_atomic_long_inc_not_zero(9), raw_atomic_long_inc_unless_negative(9), raw_atomic_long_dec_unless_positive(9), raw_atomic_long_dec_if_positive(9)

💖 cute sign-off: source/version ./include/linux/atomic, date October 2026, page raw_atomic_long_fetch_dec(9). byeee bestie 🫶✨