nilfs_cleanup_super(9)

🌸 NAME 🌸

nilfs_cleanup_super — write filesystem state for cleanup.

okay bestie, you're reading the nilfs_cleanup_super(9) page from the Kernel API Manual, and we're about to make cleanup state flags make sense. no cap 💅

✨ SYNOPSIS ✨

int nilfs_cleanup_super (struct super_block *sb );

🎀 ARGUMENTS 🎀

• sb — the super block instance that's getting unmounted, or getting degraded to read-only. that's the whole vibe check for this argument 🫶

💅 DESCRIPTION 💅

okay so this function restores the state flags in the on-disk super block. it's literally putting those state flags back where they belong.

it will set the "clean" flag — that's NILFS_VALID_FS, iykyk — unless the filesystem was not clean previously. so if it was already not clean, no fake-clean behavior here. periodt.

🔥 RETURN 🔥

• 0 on success.
• -EIO if there's an I/O error or the superblock is corrupted.

🦋 SEE ALSO 🦋

• Kernel file ./fs/nilfs2/super.c
• __nilfs_error(9)
• nilfs_move_2nd_super(9)
• nilfs_resize_fs(9)
• nilfs_tree_is_busy(9)
• nilfs_fill_super(9)

💌 cute little sign-off: this page is sourced from ./fs/nilfs2, dated October 2026, and it's the nilfs_cleanup_super(9) manual page. byeeee, go touch some filesystem state 🫶✨