Is there any way to stop reclamation of file cache pages ?

[kautuk.c @samsung.com]

Hi,

I am aware that mlocked pages can be stopped from being reclaimed
through the PFRA.

However, is there any method to stop reclamation of the page-cache
pages pertaining to
a single file's inode without mlocking ?

If I want to only use the open, read and write system calls and I want
to set specific file cache
pages to "non-reclaimable", how can I do so ?

Will the POSIX_FADV_WILLNEED option to the fadvise() system call solve
this problem ?

Thanks,
Kautuk.
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