wbc_attach_fdatawrite_inode(9)

💅 wbc_attach_fdatawrite_inode — a whole vibe

okay so bestie, welcome to the Kernel API Manual ✨ we're talking about wbc_attach_fdatawrite_inode(9) today and honestly? it's giving "small function, big responsibilities." let's get into it 🎀

✨ NAME ✨

wbc_attach_fdatawrite_inode — the glow-up that associates a wbc and an inode together, specifically for fdatawrite 🫶

🌸 SYNOPSIS 🌸

void wbc_attach_fdatawrite_inode (struct writeback_control *wbc , struct
inode *inode );

like, that's the whole signature. no cap, that's it. returns void — she doesn't return anything, she just does 💅

🦋 ARGUMENTS 🦋

• wbc — the writeback_control of interest 👀 like, the one you actually care about, the main character
• inode — the target inode 🎯 the one we're gonna be linking up

💖 DESCRIPTION 💖

so here's the tea: this function is meant to be used by filemap_writeback, which is literally an alternative entry point into the writeback code, iykyk 🔥

and what she does first — before anything else — is ensure the inode is associated with a bdi_writeback, and then she attaches it to wbc. that's the whole job. two steps. iconic behaviour. periodt ✨

🌈 SEE ALSO 🌈

• Kernel file ./fs/fs-writeback.c — go read it, bestie, it's right there 📖
• 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_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)

💀 friendly reminder: this is a kernel function, so bestie please do not call it from your random userspace C homework. she lives in ./fs and she knows it.

okay that's the whole page!! mwah 💋 coming at you from ./fs, dated October 2026, and yes the title is still wbc_attach_fdatawrite_inode(9) because we don't do rebrands here 👑 bye bestie, go read the source 🧚‍♀️💜