gfs2_alloc_blocks(9)

💖 NAME 💖

okay bestie, this is the gfs2_alloc_blocks(9) page from the Kernel API Manual — and it's literally about allocating things in GFS2. The vibe? allocate one or more blocks of data and/or a dinode ✨

• gfs2_alloc_blocks — allocate one or more blocks of data and/or a dinode 💅

✨ SYNOPSIS ✨

       int gfs2_alloc_blocks (struct gfs2_inode *ip , u64 *bn , unsigned int
       *nblocks , bool dinode );

🧚 ARGUMENTS 🧚

• ip — the inode to allocate the block for, bestie 🫶
• bn — used to return the starting block number; it's the output bestie for where the block starts 📍
• nblocks — requested number of blocks/extent length, and it's a value/result situation (value/result) 🔁
• dinode — 1 if we're allocating a dinode block, else 0 👑

🎁 RETURN 🎁

0 or error, periodt. That's the whole return vibe 💀

👀 SEE ALSO 👀

Kernel file ./fs/gfs2/rgrp.c — and here's the whole friend group, no cap:

• gfs2_setbit(9)
• gfs2_testbit(9)
• gfs2_bit_search(9)
• rs_cmp(9)
• gfs2_bitfit(9)
• gfs2_rbm_from_block(9)
• gfs2_rbm_add(9)
• gfs2_unaligned_extlen(9)
• gfs2_free_extlen(9)
• gfs2_bitcount(9)
• gfs2_rgrp_verify(9)
• gfs2_blk2rgrpd(9)
• gfs2_rgrpd_get_first(9)
• gfs2_rgrpd_get_next(9)
• __rs_deltree(9)
• gfs2_rs_deltree(9)
• gfs2_rs_delete(9)
• return_all_reservations(9)
• compute_bitstructs(9)
• gfs2_ri_total(9)
• read_rindex_entry(9)
• set_rgrp_preferences(9)
• gfs2_ri_update(9)
• gfs2_rindex_update(9)
• gfs2_rgrp_go_instantiate(9)
• gfs2_rgrp_brelse(9)
• gfs2_fitrim(9)
• rs_insert(9)
• rgd_free(9)
• rg_mblk_search(9)
• gfs2_next_unreserved_block(9)
• gfs2_reservation_check_and_update(9)
• gfs2_rbm_find(9)
• try_rgrp_unlink(9)
• gfs2_rgrp_congested(9)
• gfs2_rgrp_used_recently(9)
• fast_to_acquire(9)
• gfs2_inplace_reserve(9)
• gfs2_inplace_release(9)
• gfs2_alloc_extent(9)
• rgblk_free(9)
• gfs2_rgrp_dump(9)
• gfs2_adjust_reservation(9)
• gfs2_set_alloc_start(9)
• __gfs2_free_blocks(9)
• gfs2_free_meta(9)
• gfs2_check_blk_type(9)
• gfs2_rlist_add(9)
• gfs2_rlist_alloc(9)
• gfs2_rlist_free(9)

mwah, signing off from source/version ./fs/gfs2, dated October 2026, on the gfs2_alloc_blocks(9) page — slay 💜