nilfs_palloc_get_desc_block(9)

📦 version 7.3.1, in nixpkgs unstable

💖 nilfs_palloc_get_desc_block(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this is a kernel function page, and the function we're stanning today is nilfs_palloc_get_desc_block. It does exactly one thing and it does it iconically: it hands you the buffer head of a group descriptor block. that's it. that's the whole vibe. 🎀

🌸 NAME 🌸

nilfs_palloc_get_desc_block — get buffer head of a group descriptor block

like, literally what it says on the tin. you want the buffer head for a group descriptor block? she's got you. 💅

✨ SYNOPSIS ✨

int nilfs_palloc_get_desc_block (struct inode *inode , unsigned long
group , int create , struct buffer_head **bhp );

four args, one int return, no drama. periodt. 🔥

🦋 ARGUMENTS 🦋

  • inode — the inode of the metadata file that's using this allocator. she's the main character here, everything happens in her house. 👑
  • group — the group number. which group are we talking about? this one. ✨
  • create — the create flag. 👀
  • bhp — a pointer where the resultant buffer head gets stored. so you pass in a pointer-to-pointer and she fills it in for you. classic. 💫

🌈 RETURN 🌈

0 on success, or a negative error code on failure. that's it. no secret third option, ngl. 😭

💜 SEE ALSO 💜

okay so this is the part where I introduce you to the whole friend group — and it is a large friend group. every single one of them, no skipping, iykyk:

Kernel file ./fs/nilfs2/alloc.c, plus:

thats thirty entries bestie. THIRTY. she knows everybody at this party. 💀

fr fr, if you're digging into nilfs2 allocation internals, this whole list is your reading list — go read alloc.c, it ate. 🍓

and that's the page!! 🫶 this one lives under ./fs/nilfs2 and it's dated October 2026 — so mark your calendars, screenshot it, pin it, whatever, because that's the version and date this whole thing is serving. bye bestie, slay your kernel hacking 💖✨🧚

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