sync_inodes_sb(9)

💅 sync_inodes_sb — kernel API manual, but make it make sense 🎀

okay so bestie, welcome to the <purple>sync_inodes_sb(9)</purple> page — it's a kernel API manual moment, and honestly? It's a short one, so we're gonna get through it together and you're gonna get it. 🫶

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✨ NAME ✨

sync_inodes_sb — sync sb inode pages, no cap 💫

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🌸 SYNOPSIS 🌸

void sync_inodes_sb (struct super_block *sb );

that's it. that's the whole thing. one function, one argument, zero drama. it returns void bestie, so like... don't go looking for a return value, it's not coming. 😌

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🦋 ARGUMENTS 🦋

• sb — the superblock 💖 — literally the superblock, that's the whole description, she's doing her job and saying exactly what she needs to say.

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👑 DESCRIPTION 👑

okay so here's the actual tea ☕ — this function writes and waits on any dirty inode belonging to this super_block.

read that again, because both halves matter, fr fr:

1. it writes the dirty inodes — like, flushes them out ✍️
2. and it waits on them — it does not just fire and forget, it stays there until they're done 🧚

and it only touches inodes that belong to this super_block. not the neighbours, not the other filesystems, just hers. main character energy, honestly. 👑

🫶 little reminder that "dirty" here is a whole technical thing (inodes with unsaved changes pending) — not a judgement on the inode's hygiene. she's doing great.

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💜 SEE ALSO 💜

so you wanna go deeper? periodt, let's go — here's the whole squad, all in the kernel file ./fs/fs-writeback.c:

• inode_io_list_move_locked(9)
• wb_wait_for_completion(9)
• inode_cgwb_move_to_attached(9)
• locked_inode_to_wb_and_lock_list(9)
• inode_to_wb_and_lock_list(9)
• inode_switch_wbs(9)
• cleanup_offline_cgwb(9)
• wbc_attach_and_unlock_inode(9)
• wbc_attach_fdatawrite_inode(9)
• wbc_detach_inode(9)
• wbc_account_cgroup_owner(9)
• wb_split_bdi_pages(9)
• bdi_split_work_to_wbs(9)
• cgroup_writeback_by_id(9)
• cgroup_writeback_umount(9)
• wb_start_background_writeback(9)
• filemap_dontcache_kick_writeback(9)
• __mark_inode_dirty(9)
• writeback_inodes_sb_nr(9)
• writeback_inodes_sb(9)
• try_to_writeback_inodes_sb(9)
• write_inode_now(9)
• sync_inode_metadata(9)

iykyk — that's a lot of writeback friends, and they all live together in ./fs/fs-writeback.c. go say hi. 🌈

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and that's the page!! ✨ sign-off time: this lil manual page comes from <pink>./fs</pink>, dated <pink>October 2026</pink>, and it's filed under sync_inodes_sb(9) in the Kernel API Manual. slay, go sync some inodes, and remember — write and wait. 💅🎀