genradix_prealloc(9)

💅 genradix_prealloc(9)

okay so bestie, welcome to the Kernel API Manual page for genradix_prealloc — yes that's the manual name, it's giving official documentation energy but we're gonna make it make sense 🫶

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✨ NAME ✨

genradix_prealloc — preallocate entries in a generic radix tree 🌸

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🎀 SYNOPSIS 🎀

genradix_prealloc (_radix , _nr , _gfp );

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🦋 ARGUMENTS 🦋

• _radix — the genradix you wanna preallocate, like the actual tree we're doing this for 🌈
• _nr — how many entries you want preallocated, the count, the number, the amount, ok 💅
• _gfp — the gfp mask, that's the flag situation you're passing along ✨

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👑 DESCRIPTION 👑

so here's the tea, bestie: this one returns 0 on success 🎉 and -ENOMEM on failure 💀 — that's literally the whole bit. no cap, that's it, that's the description. short and iconic, periodt.

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/generic-radix-tree.h 🌸
• Generic radix trees/sparse arrays(9)
• genradix_init(9)
• genradix_free(9)
• genradix_ptr(9)
• genradix_ptr_alloc(9)
• genradix_iter_init(9)
• genradix_iter_peek(9)
• genradix_iter_peek_prev(9)
• genradix_for_each(9)
• genradix_for_each_reverse(9)

go read those next, iykyk 🧚💜

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ok that's the whole page bestie, you ate that ngl 💅✨

and for the cute sign-off: this gem lives over in ./include/linux, it's dated October 2026, and it's filed under genradix_prealloc(9) in case you need to find it again 🎀🫶💖