nilfs_ioctl_..._inode_block(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nilfs_ioctl_..._inode_block — bestie's guide to the Kernel API Manual (section 9) ✨

okay so picture this: you're deep in the kernel, section 9 of the Kernel API Manual, and you meet this little function. her whole job? getting a data/node block all prepped and pretty so the garbage collector can move it. no cap, that's it. 🎀

🌸 NAME 🌸

nilfs_ioctl_move_inode_block — prepare data/node block for moving by GC 💫

🦋 SYNOPSIS 🦋

int nilfs_ioctl_move_inode_block (struct inode *inode , struct
nilfs_vdesc *vdesc , struct list_head *buffers );

like, yes, she's a mouthful, but she's worth it 🫶

💖 ARGUMENTS 💖

  • inode — the inode object, mmkay? the actual file-ish thing we're working with.
  • vdesc — descriptor of virtual block number. lowkey the little ID card for the block 👑
  • buffers — list of moving buffers. it's giving "queue of stuff in transit" energy ✨

🔥 DESCRIPTION 🔥

so what does nilfs_ioctl_move_inode_block actually do? she registers the data/node buffer in the GC pagecache and submits a read request. that's the whole vibe. literally registers + submits, and now the block is queued up and ready to be read. slay. 💅

⭐ RETURN ⭐

0 on success 🎉 — or one of these negative error codes if things go sideways:

  • -EEXIST — Block conflict detected. (someone else called dibs 😭)
  • -EINVAL — Invalid virtual block descriptor. (the ID card did NOT check out 💀)
  • -EIO — I/O error.
  • -ENOENT — Requested block doesn't exist. (ghost block 👻)
  • -ENOMEM — Insufficient memory available. (no room, no vibes 🙈)

🌈 SEE ALSO 🌈

Kernel file ./fs/nilfs2/ioctl.c, plus the whole friend group — go say hi to all of them:

ngl, cross-referencing is basically the group chat of the kernel. iykyk 🧚

k that's the whole page bestie, and one last thing before you go — this one lives in ./fs/nilfs2, dated October 2026, and it's filed under nilfs_ioctl_..._inode_block(9) in the Kernel API Manual. periodt. 💜🍓

📦 where this page comes from