wb_get_create_current(9)

💖 NAME 💖

okay bestie, this page is wb_get_create_current(9) from the Kernel API Manual, and the name is literally wb_get_create_current - get or create wb for %current on a bdi ✨. no cap.

🎀 SYNOPSIS 🎀

here’s the signature in all its glory:

struct bdi_writeback * wb_get_create_current (struct backing_dev_info
*bdi , gfp_t gfp );

💅 ARGUMENTS 💅

• bdi — the bdi of interest 👀
• gfp — the allocation mask 🎀

✨ DESCRIPTION ✨

So this one is equivalent to wb_get_create on current’s memcg — periodt 💅. It gets called from a relatively hot path, and it optimizes the common cases using wb_find_current 🔥.

🦋 SEE ALSO 🦋

Kernel file ./include/linux/backing-dev.h, plus this whole friend group:

• writeback_in_progress(9)
• inode_cgwb_enabled(9)
• wb_find_current(9)
• inode_to_wb(9)
• unlocked_inode_to_wb_begin(9)
• unlocked_inode_to_wb_end(9)

mwah 💋 cute sign-off: the footer credits ./include/linux, dates this iconic page October 2026, and reminds you it’s wb_get_create_current(9) — slay 🫶