_drbd_send_ack(9)

✨ _drbd_send_ack(9) ✨

okay bestie, so this one is a page straight out of the Kernel API Manual and it's lowkey just one little function, but she's important okay 💅 her whole job? she sends an ack packet. that's it. that's the post. no cap 🎀

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🌸 NAME 🌸

_drbd_send_ack — Sends an ack packet 🫶

like literally, that's the entire vibe: it sends an ack packet. short and iconic, periodt.

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🦋 SYNOPSIS 🦋

int _drbd_send_ack (struct drbd_peer_device *peer_device , enum
       drbd_packet cmd , u64 sector , u32 blksize , u64 block_id );

not me giving you the whole signature, we're gonna take it slow 💖

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🎀 ARGUMENTS 🎀

• peer_device — DRBD peer device. it's the peer device, bestie, that's who we're talking to 💫
• cmd — Packet command code. the command code of the packet, yup, that's it.
• sector — the sector, and heads up 👑 it needs to be in big endian byte order — not optional, not a suggestion, big endian or bust.
• blksize — size in byte, and same deal, needs to be in big endian byte order 🙈 don't forget the conversion, i'm begging.
• block_id — Id, big endian byte order. yes the Id, yes big endian, we been knew 💀

real talk: sector, blksize and block_id are all big endian, so if something looks cursed after this call, go check your byte order first 😭

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🔥 SEE ALSO 🔥

Kernel file ./drivers/block/drbd/drbd_main.c — plus the whole friend group, all of these are absolutely worth a read, bestie, no skimming ✨

• tl_release(9)
• _tl_restart(9)
• tl_clear(9)
• tl_abort_disk_io(9)
• drbd_thread_current_set_cpu(9)
• drbd_send_current_state(9)
• drbd_send_state(9)
• drbd_send_ack(9)
• drbd_md_sync(9)
• drbd_md_read(9)
• drbd_md_mark_dirty(9)
• drbd_uuid_new_current(9)
• drbd_bmio_set_n_write(9)
• drbd_bmio_clear_n_write(9)
• drbd_queue_bitmap_io(9)
• drbd_bitmap_io(9)
• drbd_wait_misc(9)

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and that's the whole page, bestie 🌈 ok bye, this came from ./drivers/block/drbd, dated October 2026 — drink some water, check your endianness, and go send that ack 💜🧚⭐