ceph_end_io_read(9)

💖 ceph_end_io_read(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes that's the manual name, and yes this page is a whole lil' vibe. it's a nine-parter (that (9) is the section, iykyk) and it's about closing out a buffered read like a good little kernel citizen. let's get into it 🫶

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✨ NAME ✨

ceph_end_io_read — the function that's literally just "hey bestie, the buffered read operation is done" 💅

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🌸 SYNOPSIS 🌸

void ceph_end_io_read (struct inode *inode );

that's it. that's the whole signature. void return, one pointer, no drama, no notes 👑

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🎀 ARGUMENTS 🎀

• inode — the file inode. that's the whole description. it's a file inode. slay.

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🦋 DESCRIPTION 🦋

so what this icon actually does: it declares that a buffered read operation is done, and then it releases the shared lock on inode->i_rwsem. that's the whole deal.

think of it as the "ok I'm out, unlocking the door behind me" of the Ceph read path. you called a start function earlier, you did your reading, and now you're wrapping up so everybody else can get in there too. no cap, that's the entire plot 💀

lowkey a note for you: it's the shared lock on inode->i_rwsem that gets released here — not some exclusive one. match it up with the right start function and you're golden ✨

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🔥 SEE ALSO 🔥

• kernel file ./fs/ceph/io.c
• ceph_start_io_read(9)
• ceph_start_io_write(9)
• ceph_end_io_write(9)
• ceph_start_io_direct(9)
• ceph_end_io_direct(9)

like the whole friend group, honestly. go read their pages too, bestie, they're all in the same file 🌈

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okay and finally, the receipts 💖 — this page lives in ./fs/ceph, it's dated October 2026, and the page itself is ceph_end_io_read(9). that's the tea. go forth and unlock responsibly 🧚⭐