get_leaf_nr(9)

✨ get_leaf_nr(9) ✨

okay bestie, welcome to the <pink>get_leaf_nr</pink> page of the Kernel API Manual 💅 this one's a little function from the GFS2 crew and honestly it's giving "small but crucial" energy.

🌸 NAME 🌸

get_leaf_nr — get a leaf number associated with the index 👑

🦋 SYNOPSIS 🦋

int get_leaf_nr (struct gfs2_inode *dip , u32 index , u64 *leaf_out );

🎀 ARGUMENTS 🎀

• dip — the GFS2 inode, aka the main character of this operation 🫶
• index — hash table index of the targeted leaf, like the coordinate of the leaf you're hunting for 🔍
• leaf_out — the resulting leaf block number lands here, that's your output slot ✨

⭐ RETURN ⭐

Returns 0 on success, and an error code otherwise — so like, if it's not 0, something went sideways, no cap 😭

🌈 SEE ALSO 🌈

Kernel file ./fs/gfs2/dir.c and its whole friend group:

• gfs2_dir_write_data(9)
• gfs2_dir_read_data(9)
• gfs2_dir_get_hash_table(9)
• gfs2_dir_hash_inval(9)
• dirent_next(9)
• dirent_del(9)
• dir_make_exhash(9)
• dir_split_leaf(9)
• dir_double_exhash(9)
• compare_dents(9)
• do_filldir_main(9)
• gfs2_dir_readahead(9)
• dir_e_read(9)
• gfs2_dir_search(9)
• dir_new_leaf(9)
• gfs2_dir_add(9)
• gfs2_dir_del(9)
• gfs2_dir_mvino(9)
• leaf_dealloc(9)
• gfs2_dir_exhash_dealloc(9)
• gfs2_diradd_alloc_required(9)

and that's the whole vibe check, bestie 💖 this page lives in ./fs/gfs2, dated October 2026, and it's literally titled get_leaf_nr(9) — slay, go read the source, periodt 🧚‍♀️🌸