inode_attach_wb(9)

🌸 inode_attach_wb(9) 🌸

okay so welcome to the Kernel API Manual, bestie — we’re doing inode_attach_wb(9) today and it’s honestly such a little icon. 💅

💖 NAME 💖

inode_attach_wb — associate an inode with its wb 🫶

✨ SYNOPSIS ✨

the whole signature, exactly as it is, no edits:

void inode_attach_wb (struct inode *inode , struct folio *folio );

🎀 ARGUMENTS 🎀

• inode — inode of interest, literally the one we’re looking at.
• folio — folio being dirtied (may be NULL), so yes, NULL is allowed, bestie.

🦋 DESCRIPTION 🦋

Okay so here’s the vibe: if inode doesn’t have its wb, associate it with the wb matching the memcg of folio — or, if folio is NULL, associate it with the wb matching current. That’s the whole thing. ✨

It may be called w/ or w/o inode->i_lock, so either way is fine. No cap. 💅

bestie reminder: folio may be NULL — that’s in the arguments, not a drill. 🫶

🌈 SEE ALSO 🌈

• Kernel file ./include/linux/writeback.h — plus the squad: wb_domain_size_changed(9), inode_detach_wb(9), and wbc_init_bio(9) 👑

made with 💖 from ./include/linux, dated October 2026 — mwah, inode_attach_wb(9) out. 💅🎀