inode_cgwb_move_to_attached(9)

💖 inode_cgwb_move_to_attached(9) 💖

okay so bestie, we're in the kernel API manual today, and this one is literally called inode_cgwb_move_to_attached — say that five times fast, i dare you 🫶. it's a little writeback helper, it's giving backstage-crew energy, and honestly? iconic.

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✨ NAME ✨

inode_cgwb_move_to_attached — put the inode onto the wb->b_attached list. that's the whole job. no cap. 💅

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🌸 SYNOPSIS 🌸

void inode_cgwb_move_to_attached (struct inode *inode , struct
       bdi_writeback *wb );

literally just two args and zero return value. she does her thing and she leaves. main character behaviour, honestly. ✨

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🦋 ARGUMENTS 🦋

• inode — the inode of interest. ⚠️ and you must already be holding i_lock when you call this, that's not optional, that's the vibe check.
• wb — the target bdi_writeback. the destination. the place she's moving to. 🎀

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💜 DESCRIPTION 💜

so what actually happens? okay so: this function removes the inode from wb's io lists, and if necessarily, puts it onto the b_attached list. 💫

and here's the lil detail that matters — only inodes attached to cgwb's are kept on this list. that's the rule. that's the whole membership criteria. iykyk 🧚

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👑 SEE ALSO 👑

bestie, buckle up, the friend group is huge — this is the friend group chat of kernel file ./fs/fs-writeback.c:

• inode_io_list_move_locked(9)
• wb_wait_for_completion(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)
• sync_inodes_sb(9)
• write_inode_now(9)
• sync_inode_metadata(9)

like… that's a full roster. go say hi. they're all in there. 🌈

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and that's the page, bestie!! 🎀 this lil beauty lives in the ./fs directory and it's dated October 2026, and the whole thing is filed under inode_cgwb_move_to_attached(9) — so if you need to find her again, that's the name. mwah. 💖✨🔥