page_counter_try_charge(9)

💅 NAME 💅

page_counter_try_charge — bestie, this one tries to hierarchically charge pages ✨

🎀 SYNOPSIS 🎀

bool page_counter_try_charge (struct page_counter *counter , unsigned long nr_pages , struct page_counter **fail );

🌸 ARGUMENTS 🌸

• counter — the counter itself, iconic, the main character of this whole situation 👑
• nr_pages — the number of pages you're trying to charge, like literally how many 🍓
• fail — points at the first counter to hit its limit, if any — so if things go sideways, this is who snitches 🙈

💖 DESCRIPTION 💖

Returns true on success 🎉 — or false plus fail if the counter or any one of its ancestors has hit its configured limit 😭. Yes, the whole family tree gets a vibe check, not just the counter itself. No cap.

Heads up bestie: fail only gets set when it actually fails — success is just a clean little true, periodt.

🦋 SEE ALSO 🦋

Kernel file ./mm/page_counter.c — go read it, iykyk 💜

• page_counter_cancel(9)
• page_counter_charge(9)
• page_counter_uncharge(9)
• page_counter_set_max(9)
• page_counter_set_min(9)
• page_counter_set_low(9)
• page_counter_memparse(9)
• page_counter_calculate_protection(9)

okay that's the whole page, you ate that 🫶 this little gem lives in ./mm and it's giving October 2026 energy — the Kernel API Manual said slay and honestly? it did 💅✨