nilfs_dat_mark_dirty(9)

💅 nilfs_dat_mark_dirty ✨

okay so bestie, welcome to the kernel API manual for nilfs_dat_mark_dirty 💖 yes that's the whole name, she's long but she's iconic, and today we're learning what she does. grab a snack 🍓

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🌸 NAME 🌸

nilfs_dat_mark_dirty — marks the DAT block buffer that holds the specified virtual block address entry as dirty. that's it, that's the job, and honestly? she does it flawlessly 🎀

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✨ SYNOPSIS ✨

int nilfs_dat_mark_dirty (struct inode *dat , __u64 vblocknr );

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🦋 ARGUMENTS 🦋

• dat — the DAT file inode 👑 like, the inode, the whole personality
• vblocknr — the virtual block number 💫

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🔥 RETURN 🔥

0 on success 🎉 (slay), or one of these negative error codes if things go sideways 😭:

• -EINVAL — invalid DAT entry (that's the internal code, iykyk) 🙈
• -EIO — I/O error, and yes that includes metadata corruption, so like… be aware 💀
• -ENOMEM — not enough memory available, the classic 😔

ngl if you see -EIO and it's metadata corruption, that's not a vibe. handle it. 🫶

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🌈 SEE ALSO 🌈

• Kernel file ./fs/nilfs2/dat.c 💜
• struct nilfs_dat_info(9) ⭐
• nilfs_dat_freev(9) 🧚
• nilfs_dat_move(9) 🦋
• nilfs_dat_translate(9) 💫
• nilfs_dat_read(9) 📖

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and that's the whole page, bestie! 💅 this one's from ./fs/nilfs2, dated October 2026, and it goes by nilfs_dat_mark_dirty(9) — periodt. 💖✨🎀