nilfs_palloc..._alloc_entry(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 nilfs_palloc..._alloc_entry(9) 🎀

okay so real talk bestie, welcome to the Kernel API Manual — yes that Kernel API Manual, the one that lives rent-free in /fs/nilfs2. Today's episode is a short one and honestly kind of a jumpscare, because the page header says nilfs_palloc..._alloc_entry(9) (with the lil ellipsis and everything, not a typo, that's genuinely how it's written) and then the NAME section hits you with a different but extremely related function. Stay with me, it all makes sense 💖

✨ NAME ✨

nilfs_palloc_abort_alloc_entry — literally the "nvm, cancel that" of persistent object allocation 🫶

Like, you were gonna allocate a persistent object, and now you're not. This is the undo button. The "jk". The "actually never mind bestie".

🌸 SYNOPSIS 🌸

void nilfs_palloc_abort_alloc_entry (struct inode *inode , struct nilfs_palloc_req *req );

that's it. that's the whole signature. void return, so no status code to obsess over — it just does the thing 💅

🦋 ARGUMENTS 🦋

  • inode — the inode of the metadata file that's using this allocator. yes, this specific allocator. it's the one holding the vibes, lowkey the main character here 👑
  • req — the nilfs_palloc_req structure that got exchanged for the allocation. this is the lil receipt for the allocation you're now cancelling, so keep it safe and hand it back over 🙈

🔥 SEE ALSO 🔥

fr fr the whole nilfs2 palloc family is here, and the Kernel file they all live in is ./fs/nilfs2/alloc.c — go say hi:

ngl the funniest part is nilfs_palloc_prepare_alloc_entry(9) and nilfs_palloc_commit_alloc_entry(9) are right there in the list, so this page is basically the third act of the allocate-commit-abort trilogy. abort is the one where the plan falls through 😭

okay that's the whole page, it's giving short and sweet. periodt 💜

✨ mwah ✨ this icon was brought to you by ./fs/nilfs2, dated October 2026, and signed off by your local Kernel API Manual bestie. go cancel some allocations responsibly, ily 🎀💖🦋

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