STRUCT NILFS_DAT_ENTRY(9)

💅 struct nilfs_dat_entry(9) — like, the whole page, bestie

okay so you're reading the Kernel API Manual page for struct nilfs_dat_entry(9) and honestly? it's a short one, but it's iconic. this lil cutie is the disk address translation entry. that's the whole vibe. no cap.

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✨ NAME ✨

struct nilfs_dat_entry — disk address translation entry 🎀

like, it translates addresses. on disk. that's her job and she does it.

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🌸 SYNOPSIS 🌸

here's the whole struct, copy-pasted exactly because we do not play with source code:

struct nilfs_dat_entry {
    __le64 de_blocknr;
    __le64 de_start;
    __le64 de_end;
    __le64 de_rsv;
 };

four __le64 fields. that's it. that's the girl. simple, clean, main character energy 💜

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🦋 MEMBERS 🦋

okay bestie, let's go through the squad one by one:

• de_blocknr — the block number. that's it, that's the whole description, and honestly? she said what she said. 🔥
• de_start — the start checkpoint number. she's giving "where the era begins" ✨
• de_end — the end checkpoint number. the closing credits, the wrap party, the periodt 💅
• de_rsv — reserved for future use. not me being the mysterious one in the group chat 🙈 she's saving her seat for later, iykyk.

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👑 SEE ALSO 👑

you want the whole friend group? here's the whole friend group, fr fr — all from the kernel file ./include/uapi/linux/nilfs2_ondisk.h:

• struct nilfs_inode(9)
• struct nilfs_super_root(9)
• struct nilfs_super_block(9)
• struct nilfs_finfo(9)
• struct nilfs_binfo_v(9)
• struct nilfs_binfo_dat(9)
• union nilfs_binfo(9)
• struct nilfs_segment_summary(9)
• struct nilfs_btree_node(9)
• struct nilfs_direct_node(9)
• struct nilfs_palloc_group_desc(9)
• struct nilfs_snapshot_list(9)
• struct nilfs_checkpoint(9)
• struct nilfs_cpfile_header(9)
• struct nilfs_segment_usage(9)
• struct nilfs_sufile_header(9)

like, that's the entire nilfs2 extended family and they all ate. no crumbs. 🌈

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lowkey a reminder that this is Kernel API Manual territory — kernel structs, kernel rules. stay curious, stay caffeinated. ☕💀

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mwah 💖 that's the page! source situation: ./include/uapi/linux, dated October 2026, and it's all struct nilfs_dat_entry(9) from top to bottom. go read your kernel headers bestie, they're literally right there. 🫶✨