nand_get_data_buf(9)

💅 nand_get_data_buf(9) — the Kernel API Manual, bestie edition 🎀

So this one is nand_get_data_buf from the Kernel API Manual, and honestly? It's a tiny little function with a big vibe. Let's get into it. ✨

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✨ NAME ✨

nand_get_data_buf — grab that internal page buffer, no cap 🫶

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🌸 SYNOPSIS 🌸

void * nand_get_data_buf (struct nand_chip *chip );

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🦋 ARGUMENTS 🦋

• chip — the NAND chip object. That's it, that's the whole argument. Main character energy, honestly. 👑

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💖 DESCRIPTION 💖

Okay so here's the tea: this returns the pre-allocated page buffer, but only after invalidating the cache. Like, it hands you the buffer fresh and clean. 🧼✨

This one's for you if you're writing a driver that does not want to allocate its own bounce buffer but still needs one for specific operations — and the manual says that's most commonly the case when reading OOB data only. 🍓

⚠️ Be careful to never call this function in the write/write_oob path. Why? Because the core may have placed the data to be written out in this buffer, and if you go messing with it, that's giving chaos, not cute. 💀 So like... respect the buffer. 🙈

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⭐ RETURN ⭐

A pointer to the page cache buffer. Slay. 🎀

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/mtd/rawnand.h, plus this whole friend group right here 👇

• struct nand_parameters(9)
• struct nand_id(9)
• struct nand_ecc_step_info(9)
• struct nand_ecc_caps(9)
• struct nand_ecc_ctrl(9)
• struct nand_sdr_timings(9)
• struct nand_nvddr_timings(9)
• enum nand_interface_type(9)
• struct nand_interface_config(9)
• nand_interface_is_sdr(9)
• nand_interface_is_nvddr(9)
• nand_get_sdr_timings(9)
• nand_get_nvddr_timings(9)
• struct nand_op_cmd_instr(9)
• struct nand_op_addr_instr(9)
• struct nand_op_data_instr(9)
• struct nand_op_waitrdy_instr(9)
• enum nand_op_instr_type(9)
• struct nand_op_instr(9)
• struct nand_subop(9)
• struct nand_op_parser_addr_constraints(9)
• struct nand_op_parser_data_constraints(9)
• struct nand_op_parser_pattern_elem(9)
• struct nand_op_parser_pattern(9)
• struct nand_op_parser(9)
• struct nand_operation(9)
• struct nand_controller_ops(9)
• struct nand_controller(9)
• struct nand_legacy(9)
• struct nand_chip_ops(9)
• struct nand_manufacturer(9)
• struct nand_secure_region(9)
• struct nand_chip(9)
• nand_get_interface_config(9)
• struct nand_flash_dev(9)
• nand_opcode_8bits(9)

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and that's the whole page, bestie 💜 This one lives over in ./include/linux/mtd, dated October 2026, and it's from the Kernel API Manual — nand_get_data_buf(9), literally iconic, no notes. 💅✨