emergency_thaw_all(9)

💅 emergency_thaw_all(9) — like, the Kernel API Manual era 🧊➡️🔥

okay bestie, sit down, hydrate, and let me tell you about emergency_thaw_all(9) from the Kernel API Manual. this one's short but it's iconic — it's the "everybody unfreeze RIGHT NOW" button and honestly? main character energy.

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✨ NAME ✨

emergency_thaw_all — forcibly thaw every frozen filesystem 💖

like, forcibly. no soft launch, no "hey can u wake up pls", we are THAWING them. all of them. periodt.

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🌸 SYNOPSIS 🌸

void emergency_thaw_all (void );

that's it, that's the whole signature, she's giving minimalism 🎀

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🦋 ARGUMENTS 🦋

• void — no arguments, babe. zero. none. she takes nothing and she gives everything 🫶

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🔥 DESCRIPTION 🔥

Used for emergency unfreeze of all filesystems via SysRq.

that's the whole description and ngl it eats. this is the function you reach for when everything's frozen and you need a mass thaw, and it gets triggered through SysRq — aka the kernel's little emergency hotline 😭✨

real talk: this is an emergency path, so like… it's not a casual "let me just thaw a thing" vibe. the word emergency is literally in the name, bestie. respect the name 💀

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👑 SEE ALSO 👑

Kernel file ./fs/super.c — and literally the whole superblock friend group, no cap:

• super_lock(9)
• alloc_super(9)
• deactivate_locked_super(9)
• deactivate_super(9)
• grab_super(9)
• retire_super(9)
• generic_shutdown_super(9)
• sget_fc(9)
• iterate_supers_type(9)
• reconfigure_super(9)
• get_anon_bdev(9)
• sget_dev(9)
• fs_bdev_freeze(9)
• fs_bdev_thaw(9)
• fs_bdev_file_open_by_dev(9)
• fs_bdev_file_open_by_path(9)
• fs_bdev_unregister(9)
• fs_bdev_file_release(9)
• get_tree_bdev_flags(9)
• get_tree_bdev(9)
• vfs_get_tree(9)
• sb_wait_write(9)
• freeze_super(9)
• thaw_super(9)

if you're reading fs_bdev_thaw(9) and thaw_super(9) next, you already know what time it is 🌈💅

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okay that's the page!! this one lives under ./fs, dated October 2026, and the whole thing is filed as emergency_thaw_all(9) — go thaw responsibly, icon ⭐🧚💜