nilfs_sufile_read(9)

🌸 nilfs_sufile_read(9) 🌸

okay so this is a page from the Kernel API Manual, and bestie, we're about to read or get a sufile inode. that's it, that's the vibe. main character energy for filesystem internals 💅

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✨ NAME ✨

nilfs_sufile_read — read or get sufile inode

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✨ SYNOPSIS ✨

int nilfs_sufile_read (struct super_block *sb , size_t susize , struct
       nilfs_inode *raw_inode , struct inode **inodep );

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✨ ARGUMENTS ✨

• sb — the super block instance, literally the big boss of this whole filesystem situation 👑
• susize — size of a segment usage entry, just the size, no cap 🎀
• raw_inode — the on-disk sufile inode, the raw unfiltered version, iykyk
• inodep — buffer to store the inode, like a little drop-off spot for your inode 🫶

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✨ RETURN ✨

0 on success, or a negative error code on failure. so if you get 0 you're slaying, and if you get a negative number... well, that's a vibe check you did not pass 😭

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✨ SEE ALSO ✨

the kernel file lives at ./fs/nilfs2/sufile.c, and it's got a whole friend group:

• struct nilfs_sufile_info(9)
• nilfs_sufile_segment_usage_offset(9)
• nilfs_sufile_get_ncleansegs(9)
• nilfs_sufile_updatev(9)
• nilfs_sufile_set_alloc_range(9)
• nilfs_sufile_alloc(9)
• nilfs_sufile_mark_dirty(9)
• nilfs_sufile_set_segment_usage(9)
• nilfs_sufile_get_stat(9)
• nilfs_sufile_truncate_range(9)
• nilfs_sufile_resize(9)
• nilfs_sufile_get_suinfo(9)
• nilfs_sufile_set_suinfo(9)
• nilfs_sufile_trim_fs(9)

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bestie fr fr read the whole list, they're all linked together and skipping one is not the move 🙈

so yeah, that's the page. this one's from ./fs/nilfs2, October 2026 edition — iconic, timeless, periodt ⭐💖🦋 take care of her, she's doing filesystem work out here 🎀