skb_page_frag_refill(9)

💖 NAME

okay so bestie, this page is skb_page_frag_refill(9) from the Kernel API Manual, and it's literally about checking that a page_frag contains enough room. That's the whole vibe. ✨

✨ SYNOPSIS

bool skb_page_frag_refill (unsigned int sz , struct page_frag *pfrag ,
       gfp_t gfp );

🌸 ARGUMENTS

• sz — the minimum size of the fragment we want to get. like, the smallest amount of room you're asking for, bestie 🎀
• pfrag — pointer to page_frag. yes, it's giving pointer energy 💅
• gfp — priority for memory allocation. the allocation priorities, not a gossip priority, but honestly both matter 🌈

🎀 NOTE

okay so important note, no cap: while this allocator tries to use high order pages, there is no guarantee that allocations succeed. 😭 therefore, sz MUST be less or equal than PAGE_SIZE. periodt. 💀

🦋 SEE ALSO

the kernel file ./net/core/sock.c is in the group chat, and the whole squad is: sk_ns_capable(9), sk_capable(9), sk_net_capable(9), sk_set_memalloc(9), sk_alloc(9), sk_clone(9), sk_wait_data(9), __sk_mem_raise_allocated(9), __sk_mem_schedule(9), __sk_mem_reduce_allocated(9), __sk_mem_reclaim(9). iykyk 🫶

sign-off time, bestie: this little icon comes from ./net/core, dated October 2026, and it's still skb_page_frag_refill(9) — slay, bye 💅💖