Re: [patch?] Re: Do ramdisk exec's map direct to buffer cache?

[Jamie Lokier]

Alan Cox wrote:
> > Because of large shared library we'll use,
> > We want elf-based XIP binfmt.
> > Perhaps I'll work for it, but can't see the way.
> 
> If you map the library into the page cache it will be there read only. ELF
> fixups will copy on write some pages into RAM.

Even that is avoided if you use pre-relocated ELF libraries, which I
hear someone was working on.  (They can still be relocated, but have a
preferred load address where no pages need to be copied, and non-PIC
code in the library becomes efficient again).

-- Jamie