STRUCT NILFS_VDESC(9)

✨ struct nilfs_vdesc(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 this is the page for struct nilfs_vdesc, and it is literally the descriptor of virtual block number. that's the whole vibe. let's get into it 🫶

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🌸 NAME 🌸

struct nilfs_vdesc — descriptor of virtual block number periodt ✨

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🎀 SYNOPSIS 🎀

here's the struct in all its iconic glory, copy it exactly bestie, no cap:

struct nilfs_vdesc {
    __u64 vd_ino;
    __u64 vd_cno;
    __u64 vd_vblocknr;
    struct nilfs_period vd_period;
    __u64 vd_blocknr;
    __u64 vd_offset;
    __u32 vd_flags;
    __u32 vd_pad;
 };

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👑 Members 👑

okay so each of these fields is its own little main character, let's meet them 💖

• vd_ino — the inode number 🧚
• vd_cno — the checkpoint number ⭐
• vd_vblocknr — the virtual block number, yes the virtual one, keep up 💅
• vd_period — the period of checkpoint numbers 🌸
• vd_blocknr — the disk block number 🍓
• vd_offset — the logical block offset inside a file 🦋
• vd_flags — the flags (data or node block), iykyk 🔥
• vd_pad — padding, just vibing there, padding 🌈

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💜 SEE ALSO 💜

go read these next bestie, they're all in the Kernel file ./include/uapi/linux/nilfs2_api.h and they all ate:

• struct nilfs_cpinfo(9)
• struct nilfs_suinfo(9)
• struct nilfs_suinfo_update(9)
• struct nilfs_cpmode(9)
• struct nilfs_argv(9)
• struct nilfs_period(9)
• struct nilfs_cpstat(9)
• struct nilfs_sustat(9)
• struct nilfs_vinfo(9)
• struct nilfs_bdesc(9)

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ok that's the whole page, go slay some virtual block numbers 💀✨

and that's a wrap bestie 🎀 this little gem lives in ./include/uapi/linux, dated October 2026, and it's filed under struct nilfs_vdesc(9) — obsessed, honestly 🫶💖