Table of Contentsfilesystems - details the table of configured file systems linux/fs/filesystems.c
From #include <linux/fs.h>
struct file_system_type {
struct super_block *(*read_super) (struct super_block *, void *, int);
char *name;
int requires_dev;
};
This source code makes a data structure call file_systems[] which contain all the configured filesystems for the kernel. It is used primarily in linux/fs/super.c for many of the mounting of filesystems functions. This first member, in struct file_system_type, is a function pointer to a routine that will read in the super_block. A super_block generically means an i-node or special place on the device where information about the overall filesystem in stored. The name is just the string representation of the name of a specific filesystem, e.g. "ext2" or "minix".
The final member, int requires_dev, is a boolean value. If it is true then the filesystem requires a block device (?). For false, it is unclear what happens but an unnamed device is used, e.g. proc and nfs is this way.
Linus Torvalds Fill in later.
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