blkg_alloc(9)

💖 blkg_alloc(9) 💖

okay bestie, welcome to the blkg_alloc(9) page from the Kernel API Manual — this is the group chat where we learn how to allocate a blkg without losing our minds 🫶✨

🎀 NAME 🎀

blkg_alloc — allocate a blkg. no cap, that's literally the name 💅

✨ SYNOPSIS ✨

struct blkcg_gq * blkg_alloc (struct blkcg *blkcg , struct gendisk *disk
, gfp_t gfp_mask );

💅 ARGUMENTS 💅

• blkcg — block cgroup the new blkg is associated with 🫶
• disk — gendisk the new blkg is associated with 🌈
• gfp_mask — allocation mask to use ✨

🌸 DESCRIPTION 🌸

okay so this function allocates a new blkg, and it associates blkcg and disk with it 💖 that's the whole vibe. lowkey iconic, highkey useful.

🦋 SEE ALSO 🦋

kernel file: ./block/blk-cgroup.c — yes, that's where the magic lives, bestie 🧚

• blkcg_css(9)
• blkg_free(9)
• bio_blkcg_css(9)
• blkcg_parent(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)

cute sign-off time: source/version is ./block, date is October 2026 — mwah 💋✨