nilfs_attach_log_writer(9)

💖 nilfs_attach_log_writer(9) — the kernel API manual, but make it cute 🎀

okay so bestie, welcome to the nilfs_attach_log_writer page from the Kernel API Manual ✨ this is a (9) section one, so it's kernel-internals territory — pull up a chair and a strawberry drink 🍓

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🌸 NAME 🌸

nilfs_attach_log_writer — attach log writer, literally what it says on the tin 💅

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🦋 SYNOPSIS 🦋

int nilfs_attach_log_writer (struct super_block *sb , struct nilfs_root
*root );

like, that's the whole signature, no cap ✨

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🎀 ARGUMENTS 🎀

• sb — the super block instance, your main character struct 👑
• root — the root object of the current filesystem tree, iykyk 🌈

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💜 DESCRIPTION 💜

so what does it actually do? It allocates a log writer object, initializes it, and starts the log writer. That's the whole vibe check: allocate ✨ init ✨ start ✨

three steps, absolutely iconic, no notes 🫶

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🔥 RETURN 🔥

0 on success 💖 — otherwise you get one of these negative error codes, and ngl you're gonna want to brace yourself 😭:

• -EINTR — log writer thread creation failed due to interruption. rude tbh 💀
• -ENOMEM — insufficient memory available. the classic, the legend 🙈

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🌟 SEE ALSO 🌟

Kernel file ./fs/nilfs2/segment.c, plus this whole friend group right here 🧚 — every single one, don't skip:

• nilfs_transaction_begin(9)
• nilfs_transaction_commit(9)
• nilfs_segctor_reset_segment_buffer(9)
• nilfs_segctor_zeropad_segsum(9)
• nilfs_write_root_mdt_inode(9)
• nilfs_free_segments(9)
• nilfs_segctor_begin_construction(9)
• nilfs_prepare_write_logs(9)
• nilfs_segctor_start_timer(9)
• nilfs_construct_segment(9)
• nilfs_construct_dsync_segment(9)
• nilfs_segctor_accept(9)
• nilfs_segctor_notify(9)
• nilfs_segctor_construct(9)
• nilfs_log_write_required(9)
• nilfs_segctor_thread(9)
• nilfs_segctor_destroy(9)
• nilfs_detach_log_writer(9)

bestie, note that nilfs_detach_log_writer(9) is the breakup arc to this page's situationship — it's in the list, so go read it too 💅

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okay that's the page!! and for the cute sign-off: this one lives in ./fs/nilfs2 and it's dated October 2026 🌸 so yeah, future-vibes documentation, slay 👑💖