nilfs_palloc...r_desc_block(9)

💅 nilfs_palloc_groups_per_desc_block — the kernel API manual, bestie edition 🎀

okay so real talk, this is a page from the Kernel API Manual, section 9 (that's the kernel-functions girlies ✨). The function we're stanning today is nilfs_palloc_groups_per_desc_block, and yes the header up top is a little truncated-looking (nilfs_palloc...r_desc_block(9)) but that's just how the page wears its name, no cap. Let's get into it 🫶

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✨ NAME ✨

nilfs_palloc_groups_per_desc_block — literally just tells you the number of groups that a group descriptor block can maintain 💖

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🌸 SYNOPSIS 🌸

unsigned long nilfs_palloc_groups_per_desc_block (const struct inode
                                                  *inode );

it's giving "one argument, one unsigned long, zero drama." iconic.

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🦋 ARGUMENTS 🦋

• inode — the inode of the metadata file that's using this allocator, bestie. that's it, that's the whole vibe.

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⭐ RETURN ⭐

Returns the number of groups that a group descriptor block can maintain. a humble little count, but she ate 💅

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🔥 SEE ALSO 🔥

so you wanna go down the nilfs2 allocator rabbit hole? say less, here's the whole friend group 🧚:

• Kernel file ./fs/nilfs2/alloc.c
• nilfs_palloc_groups_count(9)
• nilfs_palloc_init_blockgroup(9)
• nilfs_palloc_group(9)
• nilfs_palloc_desc_blkoff(9)
• nilfs_palloc_bitmap_blkoff(9)
• nilfs_palloc_group_desc_nfrees(9)
• nilfs_palloc_group_desc_add_entries(9)
• nilfs_palloc_entry_blkoff(9)
• nilfs_palloc_desc_block_init(9)
• nilfs_palloc_delete_block(9)
• nilfs_palloc_get_desc_block(9)
• nilfs_palloc_get_bitmap_block(9)
• nilfs_palloc_delete_bitmap_block(9)
• nilfs_palloc_get_entry_block(9)
• nilfs_palloc_delete_entry_block(9)
• nilfs_palloc_group_desc_offset(9)
• nilfs_palloc_bitmap_offset(9)
• nilfs_palloc_entry_offset(9)
• nilfs_palloc_find_available_slot(9)
• nilfs_palloc_rest_groups_in_desc_block(9)
• nilfs_palloc_count_desc_blocks(9)
• nilfs_palloc_mdt_file_can_grow(9)
• nilfs_palloc_count_max_entries(9)
• nilfs_palloc_prepare_alloc_entry(9)
• nilfs_palloc_commit_alloc_entry(9)
• nilfs_palloc_commit_free_entry(9)
• nilfs_palloc_abort_alloc_entry(9)
• nilfs_palloc_prepare_free_entry(9)
• nilfs_palloc_abort_free_entry(9)
• nilfs_palloc_freev(9)

like, that's the entire group chat and every single one of them is a baddie 😭💜

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and that's the whole page, periodt 🎀 source/version is ./fs/nilfs2, dated October 2026, and the page answers to nilfs_palloc...r_desc_block(9) — mwah, bye bestie 🌈⭐🫶