On Tue, Feb 28, 2012 at 2:50 AM, Mulyadi Santosa <[email protected]> wrote: > On Mon, Feb 27, 2012 at 20:41, Jack David <[email protected]> wrote: >> Hi All, >> >> I am trying to replace a page which is already present in page_cache. >> Is there any direct way to do so (via some kernel API)? My experiment >> is something like, I have a file opened and read completely in user >> space app (just to make sure that all the file is present in page >> cache). From kernel, I am allocating a new page, filling some data >> into it, and want to store this data by replacing some existing page >> from page_cache. > > sounds like what you want to do is like normal mmap in user space and > then write new data into it? >
Actually I want to share the pages (present in page cache) between two files. I want to avoid memcopy in kernel as much as possible. I am going through the mmap implementation in kernel but not able to understand how it can help me in my scenario. J _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
