Messages in this thread | | | Date | Sat, 3 Mar 2007 14:38:26 -0800 | From | Andrew Morton <> | Subject | Re: userspace pagecache management tool |
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On Sat, 03 Mar 2007 17:28:35 -0500 Rik van Riel <riel@redhat.com> wrote:
> Andrew Morton wrote: > > On Sat, 03 Mar 2007 17:19:00 -0500 Rik van Riel <riel@redhat.com> wrote: > > > >>> It is *not* a global instruction. It uses setenv, so the user's policy > >>> affects only the target process and its forked children. > >> ... and all other processes accessing the same file(s)! > >> > >> Your library and the system calls may be limited to one process, > >> but the consequences are global. > > > > Yes. So what? If the user wants to go and evict libc.so from pagecache > > then he can do so - the kernel has provided syscalls with which this can be > > done for at least seven years. Bad user, shouldn't do that. > > Are you saying the user should not use your script with their > backup program?
No.
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