EXT2_FS_XIP什么意思

ycnian

ext2文件系统的Kconfig文件中有一个选项EXT2_FS_XIP，这个选项的解释如下：

config EXT2_FS_XIP
        bool "Ext2 execute in place support"
        depends on EXT2_FS && MMU
        help
          Execute in place can be used on memory-backed block devices. If you
          enable this option, you can select to mount block devices which are
          capable of this feature without using the page cache.

          If you do not use a block device that is capable of using this,
          or if unsure, say N.

看了一会儿没看明白，请问这个选项什么意思呢？什么情况下需要使用这个选项？

T-Bagwell

you can select to mount block devices which are
          capable of this feature without using the page cache.

T-Bagwell

you can select to mount block devices which are
          capable of this feature without using the page cache.