nilfs_palloc...ile_can_grow(9)
π nilfs_palloc_mdt_file_can_grow(9) β Kernel API Manual, bestie edition β¨
okay so this one lives in the Kernel API Manual and the page title got a lil chopped in the header (nilfs_palloc...ile_can_grow(9), we still love her) β but the actual function is the icon herself: nilfs_palloc_mdt_file_can_grow. Let's get into it π«Ά
β¨ NAME β¨
nilfs_palloc_mdt_file_can_grow β check potential opportunity for MDT file growing π
like, she's the vibe-check bouncer at the door of your metadata file going "hmm... could we fit another group in here? π"
πΈ SYNOPSIS πΈ
bool nilfs_palloc_mdt_file_can_grow (struct inode *inode , unsigned long
desc_blocks );
literally returns a bool, no cap. she takes an inode and a count of desc blocks and tells you yes or no π
π¦ ARGUMENTS π¦
inodeβ inode of metadata file using this allocator. she's the metadata file in question, the main character of this whole operation πdesc_blocksβ known current descriptor blocks count. like, the number of descriptor blocks you already know about, bestie. that's the number she's working with π
β RETURN β
true if a group can be added in the metadata file, false if not. π
that's it. that's the whole answer. no page of lore, just vibes and a boolean. slay π
ngl this is the kind of function that just answers the question and dips β respect π«Ά
π₯ SEE ALSO π₯
Kernel file ./fs/nilfs2/alloc.c β and honestly the whole friend group is here, we're doing a full roll call:
nilfs_palloc_groups_per_desc_block(9)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_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)
that's thirty besties. thirty. π iykyk π§
okay and before you go β this lil gem comes from ./fs/nilfs2, dated October 2026 π so that's the source, the version, and the date, all accounted for. mwah. go check your descriptor blocks, bestie, and stay iconic πβ¨π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms