iov_iter_discard(9)

✨ iov_iter_discard(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a lil function that literally sets up "the void" as an I/O destination — no cap, it's iconic for reasons we're about to get into 🫶

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🌸 NAME 🌸

iov_iter_discard — initialise an I/O iterator that discards data 💅

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🦋 SYNOPSIS 🦋

void iov_iter_discard (struct iov_iter *i , unsigned int direction ,
       size_t count );

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🎀 ARGUMENTS 🎀

• i — the iterator you're gonna initialise, bestie. that's the whole vibe. 🎯
• direction — which way the transfer is going. yeah. the direction. (iykyk 👀)
• count — the size of the I/O buffer, in bytes. every single byte counted, fr fr 🔢

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💅 DESCRIPTION 💅

so here's the tea ☕ — you're setting up an I/O iterator that just discards everything written to it. it's giving "black hole but make it an iterator" 🕳️✨ everything goes in, nothing comes out, the data is gone, slay.

💀 heads up bestie: it's only available as a READ iterator. that's the rule and we respect it, periodt.

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🌈 SEE ALSO 🌈

Kernel file ./lib/iov_iter.c — and also these iconic siblings:

• _copy_mc_to_iter(9)
• _copy_from_iter_flushcache(9)
• iov_iter_folio_queue(9)
• iov_iter_xarray(9)
• import_iovec(9)
• iov_iter_restore(9)
• iov_iter_extract_pages(9)
• iov_iter_extract_bvecs(9)

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okay that's the whole thing, bestie 🍓 short and sweet and fully discard-coded. you got this 💜

source: ./lib · version/date: October 2026 · iov_iter_discard(9) — mwah, go read iov_iter.c, ily 👑🧚‍♀️