*/ atomic_t mm_count; // 内存描述符的引用计数 #ifdef CONFIG_MMU atomic_long_t pgtables_bytes; /* PTE page table pages */ #endif int map_count; /* number of VMAs */ spinlock_t page_table_lock; /* Protects page tables and some * counters */ /* * With some kernel config, the...
Disk /dev/nvme0n2: 5 GiB, 5368709120 bytes, 10485760 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabeltype: dos Disk identifier: 0x7a7b9c31 Device Boot Start End Sectors ...
1246structsuper_block {1247structlist_head s_list;/*Keep this first*/1248dev_t s_dev;/*search index; _not_ kdev_t*/1249unsignedchars_blocksize_bits;1250unsignedlongs_blocksize;1251loff_t s_maxbytes;/*Max file size*/1252structfile_system_type *s_type;1253conststructsuper_operations *s_...
AI代码解释 #include<stdio.h>#include<stdlib.h>#include<fcntl.h>#include<unistd.h>#include<sys/types.h>#include<sys/mman.h>#include<sys/stat.h>#include<errno.h>intmain(int argc,char*argv[]){int fd,index;char*map;struct stat file_stats;if((fd=open("test.txt",O_RDONLY))==-1){...
现在大多数现代计算机为了提高性能而采取乱序执行,这可能会导致程序运行不符合我们预期,内存屏障就是一类同步屏障指令,是CPU或者编译器在对内存随机访问的操作中的一个同步点,只有在此点之前的所有读写操作都执行后才可以执行此点之后的操作。 内存屏障,也称内存栅栏,内存栅障,屏障指令等, 是一类同步屏障指令,是CPU或...
t change a partition's system idv verify the partition tablew write table to disk and exitx extra functionality (experts only)--例子 p-打印现有分区,d-删除分区,n-新建分区,w-保存并写入磁盘Command (m for help): pDisk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectorsDisk model: Virtu...
-U, --unlink-first remove each file prior to extracting over it -W, --verify attempt to verify the archive after writing it Select output stream: --ignore-command-error ignore exit codes of children --no-ignore-command-error treat non-zero exit codes of children as ...
(CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK)/** Various SoCs need something special and SoC-specific up front in* order to boot, allow them to set that in their boot0.h file and then* use it here.** To allow a boot0 hook to insert a 'special' sequence after the vector* table (e.g. ...
unsigned short i_bytes; unsigned int i_blkbits; blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED seqcount_t i_size_seqcount; #endif /* Misc */ unsigned long i_state; struct rw_semaphore i_rwsem; unsigned long dirtied_when; /* jiffies of first dirtying */ ...
When listing iptables rules, it is also possible to show the number of packets, and the aggregate size of the packets in bytes, that matched each particular rule. This is often useful when trying to get a rough idea of which rules are matching against packets. To do so, use the-Land-...