I did not get what is the meaning of this address space, following is verbatim description:
"To manage the various target objects that can be processed and cached in whole pages, the kernel uses an abstraction of
the "address space" that associates the pages in memory with a specific block device (or any other system unit or part of a
system unit).
This type of address space must not be confused with the virtual and physical address spaces provided by the
system or processor. It is a separate abstraction of the Linux kernel that unfortunately bears the same name.
Initially, we are interested in only one aspect. Each address space has a "host" from which it obtains its data. In most
cases, these are inodes that represent just one file.[2] Because all existing inodes are linked with their superblock (as
discussed in Chapter 8), all the kernel need do is scan a list of all superblocks and follow their associated inodes to obtain
a list of cached pages"
Can anyone please explain what is the use of this and what this is all about?
Regards,
Piyush
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