end_buffer_read_sync(9)

💖 end_buffer_read_sync(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes that's the whole manual name, we're in the big-league kernel docs now 🎀 this page is all about end_buffer_read_sync, and ngl it's a short one but it's lowkey iconic for what it does ✨

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🌸 NAME 🌸

end_buffer_read_sync — handle buffer reads finishing 🦋

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✨ SYNOPSIS ✨

void end_buffer_read_sync (struct buffer_head *bh , int uptodate );

that's the whole signature, no cap 💅

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🎀 ARGUMENTS 🎀

• bh — the buffer. literally the buffer head we're wrapping up 🫶
• uptodate — true if the read was successful. that's it, that's the vibe check ⭐

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🔥 DESCRIPTION 🔥

okay so here's the tea ☕ if a buffer gets read through some mechanism that isn't bh_submit, you can call this function to finish the read 💖 that's the whole job. it's giving cleanup crew, it's giving "i got you" energy, and honestly we're obsessed 🙈

fr fr: it's the finisher for reads that didn't go through bh_submit — nothing more, nothing less, so don't go reading extra powers into it 👑

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🌈 SEE ALSO 🌈

the kernel file ./fs/buffer.c plus this whole friend group 🧚:

• bio_endio_bh(9)
• bh_end_read(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)

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and that's the page bestie 💅 huge shoutout to ./fs for hosting it, and it's stamped October 2026 — see you in the next buffer, mwah 😭💜🍓