devm_free_pages(9)

✨ devm_free_pages(9) — Kernel API Manual ✨

okay so you're in the devm_free_pages(9) page, bestie, welcome to the resource-managed side of the kernel 💅 this is the manual page, and it's short and sweet — let's get into it 🎀

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🌸 NAME 🌸

devm_free_pages — the resource-managed version of free_pages, no cap 🫶

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🌈 SYNOPSIS 🌈

void devm_free_pages (struct device *dev , unsigned long addr );

like, that's the whole signature. void return, two args, done. iconic behavior honestly ✨

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🦋 ARGUMENTS 🦋

• dev — the struct device that this memory belongs to 💖 it's the device the pages are attached to, so the devres system knows whose stuff this is.
• addr — the memory to free 🌸 literally just hand over the address and it goes away.

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🎀 DESCRIPTION 🎀

so here's the vibe: this frees memory that was allocated with devm_get_free_pages. 🔥 and the way that it's different from plain free_pages is genuinely the main character moment here — you do not need to supply the order. 🫶 the managed version already knows, so you just pass the address and let it cook.

no extra bookkeeping from you, no order argument, just free and go 💅

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💜 SEE ALSO 💜

okay this list is long but we're doing all of it, no skipping, fr fr 😭 it's all the devres girlies from ./drivers/base/devres.c (kernel file) plus the devm_* allocation fam:

• __devres_alloc_node(9)
• devres_for_each_res(9)
• devres_free(9)
• devres_add(9)
• devres_find(9)
• devres_get(9)
• devres_remove(9)
• devres_destroy(9)
• devres_release(9)
• devres_release_all(9)
• devres_open_group(9)
• devres_close_group(9)
• devres_remove_group(9)
• devres_release_group(9)
• __devm_add_action(9)
• devm_remove_action_nowarn(9)
• devm_release_action(9)
• devm_kmalloc(9)
• devm_krealloc(9)
• devm_kstrdup(9)
• devm_kstrdup_const(9)
• devm_kvasprintf(9)
• devm_kasprintf(9)
• devm_kfree(9)
• devm_kmemdup(9)
• devm_kmemdup_const(9)
• devm_get_free_pages(9) ← the one you paired with, bestie 👑
• __devm_alloc_percpu(9)

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and that's the page!! 💖 sign-off time: this one lives in ./drivers/base, dated October 2026, and it's devm_free_pages(9) all the way down. go free those pages, you got this 🧚✨