1. 根目录:
2. include
3. linux
4. sizes.h

/*
 * include/linux/sizes.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __LINUX_SIZES_H__
#define __LINUX_SIZES_H__

#define SZ_1				0x00000001
#define SZ_2				0x00000002
#define SZ_4				0x00000004
#define SZ_8				0x00000008
#define SZ_16				0x00000010
#define SZ_32				0x00000020
#define SZ_64				0x00000040
#define SZ_128				0x00000080
#define SZ_256				0x00000100
#define SZ_512				0x00000200

#define SZ_1K				0x00000400
#define SZ_2K				0x00000800
#define SZ_4K				0x00001000
#define SZ_8K				0x00002000
#define SZ_16K				0x00004000
#define SZ_32K				0x00008000
#define SZ_64K				0x00010000
#define SZ_128K				0x00020000
#define SZ_256K				0x00040000
#define SZ_512K				0x00080000

#define SZ_1M				0x00100000
#define SZ_2M				0x00200000
#define SZ_4M				0x00400000
#define SZ_8M				0x00800000
#define SZ_16M				0x01000000
#define SZ_32M				0x02000000
#define SZ_64M				0x04000000
#define SZ_128M				0x08000000
#define SZ_256M				0x10000000
#define SZ_512M				0x20000000

#define SZ_1G				0x40000000
#define SZ_2G				0x80000000

#endif /* __LINUX_SIZES_H__ */