inode_dio_begin(9)

✨ inode_dio_begin(9) ✨

okay so we're in the Kernel API Manual, bestie, and today's main character is inode_dio_begin(9). buckle up 💖

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🌸 NAME 🌸

inode_dio_begin — signal start of a direct I/O requests 🎀

(yes, "a direct I/O requests", we don't fix the grammar of the kernel, we respect it 🫶)

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🦋 SYNOPSIS 🦋

void inode_dio_begin (struct inode *inode );

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💅 ARGUMENTS 💅

• inode — the inode the direct I/O happens on. that's it, that's the whole argument, she's lowkey minimal and we stan 🍓

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🔥 DESCRIPTION 🔥

so here's the vibe: this gets called once we've finished processing a direct I/O request, and it's used to wake up callers waiting for direct I/O to be quiesced 😭

like — the function is named begin, the NAME section says "signal start", and the DESCRIPTION says "once we've finished"… it's giving plot twist, it's giving "the docs contain multitudes", and honestly? not me trying to reconcile that, i'm just the messenger 💀 no cap, that's what the page says, so that's what you're getting.

the important bit is the waking up: callers are sitting there waiting for direct I/O to be quiesced, and this is the whole reason they get to move again ⭐ so yeah, iconic behavior, main character energy, etc etc 🌈

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👑 SEE ALSO 👑

Kernel file ./include/linux/fs.h, plus a whole friend group of cross-references — collect them all, iykyk 🧚:

• enum positive_aop_returns(9)
• struct address_space(9)
• struct file_ra_state(9)
• struct file(9)
• i_uid_into_vfsuid(9)
• i_uid_needs_update(9)
• i_uid_update(9)
• i_gid_into_vfsgid(9)
• i_gid_needs_update(9)
• i_gid_update(9)
• inode_fsuid_set(9)
• inode_fsgid_set(9)
• fsuidgid_has_mapping(9)
• inode_set_ctime(9)
• file_write_started(9)
• file_write_not_started(9)
• struct renamedata(9)
• is_mgtime(9)
• iput_if_not_last(9)
• is_idmapped_mnt(9)
• file_start_write(9)
• file_end_write(9)
• kiocb_start_write(9)
• kiocb_end_write(9)
• name_is_dot_dotdot(9)
• name_contains_dotdot(9)
• inode_dio_end(9)
• generic_ci_validate_strict_name(9)

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okay and for the cute sign-off 🎀: this little baddie lives under ./include/linux, and it's dated October 2026 in the Kernel API Manual. that's the whole page, bestie — go forth and slay your direct I/O 💜✨🦋