bh_end_read(9)

🌸 bh_end_read(9) 🌸

okay so bestie, welcome to the Kernel API Manual page for bh_end_read — it's giving "small function, big responsibility" energy and honestly? iconic. ✨

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💖 NAME 💖

bh_end_read — the I/O end handler for reads. literally it's the little guy who shows up when your read is done. 🎀

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✨ SYNOPSIS ✨

void bh_end_read (struct bio *bio );

like, that's the whole signature. no cap, that's it. 💅

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🦋 ARGUMENTS 🦋

• bio — the bio that's being completed. that's the one getting its moment, its main character energy, its "we're so back" arc. 🫶

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🌸 DESCRIPTION 🌸

okay so here's the vibe: you pass this function to bh_submit when you're reading into the buffer. that's it, that's the whole job. 🎀

unless — and this is the lowkey important part — you need your own special I/O end handler. like if you've got custom end-handling needs, go off, do your own thing. but if you're just a normal read-into-the-buffer situation? hand it bh_end_read and slay. ✨

no extra lore, no hidden tricks — this is exactly what the page says and nothing more, bestie. don't invent behaviour, that's not the move. 🙈

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🔥 SEE ALSO 🔥

the whole friend group, in their original order, no one left out (and yes i mean everyone):

• bio_endio_bh(9)
• end_buffer_read_sync(9)
• bh_end_write(9)
• bh_end_async_write(9)
• mmb_sync(9)
• block_dirty_folio(9)
• mark_buffer_dirty(9)
• __brelse(9)
• __bforget(9)
• bh_submit(9)
• bdev_getblk(9)
• __bread_gfp(9)
• block_invalidate_folio(9)
• clean_bdev_aliases(9)
• try_to_free_buffers(9)
• bh_uptodate_or_lock(9)
• __bh_read(9)
• __bh_read_batch(9)

also they all live in the kernel file ./fs/buffer.c — squad location confirmed. 🗺️💜

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and that's the page!! 🦋 mwah 💋 go read your buffers, you gorgeous kernel dev.

sign-off szn: this one's from ./fs, dated October 2026 — remember it fondly, bestie. 🎀✨