nilfs_compute_checksum(9)

💅 nilfs_compute_checksum(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this one's nilfs_compute_checksum, and it's literally the checksum girlie of the nilfs world 🎀

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✨ NAME ✨

nilfs_compute_checksum — compute checksum of blocks continuously 💖

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🦋 SYNOPSIS 🦋

int nilfs_compute_checksum (struct the_nilfs *nilfs , struct buffer_head
*bhs , u32 *sum , unsigned long offset , u64 check_bytes , sector_t
start , unsigned long nblock );

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🌸 ARGUMENTS 🌸

like, seven whole arguments, she's high-maintenance but she's worth it 🫶

• nilfs — the nilfs object. your main character, fr.
• bhs — the buffer head of the start block 👑
• sum — the place to store the result, i.e. where the answer goes to live ✨
• offset — offset bytes in the first block 🎀
• check_bytes — number of bytes to be checked (yes, this many: check_bytes) 🔥
• start — DBN of the start block 🌈
• nblock — number of blocks to be checked 💅

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⭐ RETURN ⭐

0 on success, or -EIO if an I/O error occurs 😭

ngl the -EIO is giving "something went wrong in the I/O department" — that's the whole mood. no cap.

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🧚 SEE ALSO 🧚

Kernel file ./fs/nilfs2/recovery.c — and the whole friend group:

• nilfs_read_super_root_block(9)
• nilfs_read_log_header(9)
• nilfs_validate_log(9)
• nilfs_read_summary_info(9)
• nilfs_skip_summary_info(9)
• nilfs_scan_dsync_log(9)
• nilfs_do_roll_forward(9)
• nilfs_abort_roll_forward(9)
• nilfs_salvage_orphan_logs(9)
• nilfs_search_super_root(9)

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okay that's the whole page, you ate that 💅✨ this cutie lives under ./fs/nilfs2 and the date on her birth certificate says October 2026 — no cap, that's literally the vibe. bye bestie, go checksum those blocks 🦋💖🎀