blkcg_css(9)

💅 blkcg_css(9) 💅

okay so this is the blkcg_css(9) page from the Kernel API Manual, and bestie, it's short but it matters 🫶. Welcome to the group chat.

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🌸 NAME 🌸

blkcg_css — find the current css ✨

✨ SYNOPSIS ✨

struct cgroup_subsys_state * blkcg_css (void );

That's the whole signature, and yes it returns a struct cgroup_subsys_state * 👑.

🎀 ARGUMENTS 🎀

• void — no arguments. Literally none. Not a single one 🙈.

🦋 DESCRIPTION 🦋

Find the css associated with either the kthread or the current task 🧚. That's the main character energy of this function.

Heads up, bestie: this may return a dying css 💀. So it is up to the caller to use tryget logic to confirm it is alive and well — no cap, do not skip that vibe check 🔥.

👑 SEE ALSO 👑

Kernel file: ./block/blk-cgroup.c 📁

The whole friend group is here, fr fr:

• blkg_free(9)
• bio_blkcg_css(9)
• blkcg_parent(9)
• blkg_alloc(9)
• blkg_lookup_create(9)
• blkcg_print_blkgs(9)
• __blkg_prfill_u64(9)
• blkg_conf_init(9)
• blkg_conf_open_bdev(9)
• blkg_conf_prep(9)
• blkg_conf_unprep(9)
• blkg_conf_close_bdev(9)
• blkcg_destroy_blkgs(9)
• blkcg_pin_online(9)
• blkcg_unpin_online(9)
• blkcg_css_offline(9)
• blkcg_activate_policy(9)
• blkcg_deactivate_policy(9)
• blkcg_policy_register(9)
• blkcg_policy_unregister(9)
• blkcg_maybe_throttle_current(9)
• blkcg_schedule_throttle(9)
• blkcg_add_delay(9)
• blkg_tryget_closest(9)
• bio_associate_blkg_from_css(9)
• bio_associate_blkg(9)
• bio_clone_blkg_association(9)

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k bye, love u, go check your css 🎀 — source/version ./block, date October 2026, page blkcg_css(9) 💜