pipe_full(9)

💖 pipe_full(9) — like, the kernel API manual, but make it make sense 💖

okay so bestie, listen up — this one lives in the Kernel API Manual and it's called pipe_full, and honestly? the name is the whole plot. it tells you if the pipe is full. that's it. that's the function. no cap. 🫶

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✨ NAME ✨

pipe_full — return true if the pipe is full 🎀

like literally, that's the whole job. she's a vibe check for your pipe. 💅

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🌸 SYNOPSIS 🌸

bool pipe_full (unsigned int head , unsigned int tail , unsigned int limit );

yes she takes three unsigned ints and hands you back a bool. icon behaviour. 👑

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🦋 ARGUMENTS 🦋

• head — the pipe ring head pointer. the front of the line, the main character of the ring buffer, iykyk. ✨
• tail — the pipe ring tail pointer. the end of the line, standing behind head like a loyal bestie. 💜
• limit — the maximum amount of slots available. the ceiling. the final boss. the "no more room at the sleepover" number. 🌈

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🧚 SEE ALSO 🧚

the whole friend group, fr fr — and heads up, the first one is a kernel file at ./include/linux/pipe_fs_i.h:

• struct pipe_buffer(9)
• union pipe_index(9)
• struct anon_pipe_prealloc(9)
• struct pipe_inode_info(9)
• pipe_has_watch_queue(9)
• pipe_occupancy(9)
• pipe_empty(9)
• pipe_is_full(9)
• pipe_is_empty(9)
• pipe_buf_usage(9)
• pipe_buf(9)
• pipe_head_buf(9)
• pipe_buf_get(9)
• pipe_buf_release(9)
• pipe_buf_confirm(9)
• pipe_buf_try_steal(9)

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go read pipe_empty(9) after this one, it's giving sibling energy 🍓

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and that's the tea, bestie 🧋 — this little page ships from the ./include/linux directory, dated October 2026, and it's filed under pipe_full(9). mwah, slay, periodt. 💖🔥💅