nilfs_cpfil..._checkpoints(9)

💅 NAME 💅

nilfs_cpfile_delete_checkpoints — bestie, this one deletes checkpoints. That's it. That's the whole vibe. ✨

Oh and hiii, welcome to the Kernel API Manual 🎀 — yes you're reading kernel docs, and yes you're gonna slay it.

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🦋 SYNOPSIS 🦋

int nilfs_cpfile_delete_checkpoints (struct inode *cpfile , __u64 start
, __u64 end );

Like, look at her. Three args. Very demure, very mindful. 💅

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🌸 ARGUMENTS 🌸

• cpfile — the inode of the checkpoint file. That's your girl, your main character, the file we're operating on. 👑
• start — the start checkpoint number. Where the drama begins. 🏁
• end — the end checkpoint number. Where it stops (and no, she is NOT included, more on that below, stay with me 🙈).

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✨ DESCRIPTION ✨

Okay so here's the tea, bestie. ☕ nilfs_cpfile_delete_checkpoints deletes the checkpoints in the period from start to end, excluding end itself. Like, end is off-limits, she's not invited to the deletion party. 🚫

And the checkpoints that have already been deleted? They get ignored. Completely unbothered. Not me worrying about them, they're fine, they're literally already gone. 💀 The function just doesn't care, no error, no nothing. Iconic behavior honestly. 🫶

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🔥 RETURN 🔥

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

• -EINVAL — invalid checkpoints. You gave her nonsense, she's giving it right back. 😭
• -EIO — I/O error (including metadata corruption). Yeah this one's the 💀 one, metadata corruption is NOT the vibe.
• -ENOMEM — insufficient memory available. She's hungry, she needs RAM, feed her. 🍓

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🌈 SEE ALSO 🌈

Kernel file ./fs/nilfs2/cpfile.c — and the whole friend group, fr fr:

• nilfs_cpfile_checkpoint_offset(9)
• nilfs_cpfile_cp_snapshot_list_offset(9)
• nilfs_cpfile_ch_snapshot_list_offset(9)
• nilfs_cpfile_find_checkpoint_block(9)
• nilfs_cpfile_read_checkpoint(9)
• nilfs_cpfile_create_checkpoint(9)
• nilfs_cpfile_finalize_checkpoint(9)
• nilfs_cpfile_get_cpinfo(9)
• nilfs_cpfile_delete_checkpoint(9)
• nilfs_cpfile_is_snapshot(9)
• nilfs_cpfile_change_cpmode(9)
• nilfs_cpfile_get_stat(9)
• nilfs_cpfile_read(9)

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⭐ tiny reminder bestie: end is excluded from the range, and already-deleted checkpoints are ignored. No cap. Don't @ me when you're surprised. 💜

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Okay that's the whole page, go touch some kernel code ily 💖 This lil masterpiece lives in ./fs/nilfs2 and it's stamped October 2026 — catch you in the next manpage, mwah 🧚✨🎀