On Wed, May 13, 2009 at 08:35:52PM +0530, Ravish Tayal wrote: > I am looking for help to reduce the number of cached pages in the > system. I am using 2.6.12 linux kernel on ARM processor.for my > embedded USB mass storage application. Why do you think the number of cached pages is a problem? What problem are you experiencing that you think is caused by having a large number of cached pages? > 3. Is there any provision in linux kernel through which I can restrict > the new page allocation for disk operation to not to be added in the > page-cache ? > 4. If I open the file with O_DIRECT Flag would page_cache be avoided, > irrespective it is file read or File write operations? Question 4 appears to be the answer to question 3. O_DIRECT works for both reads and writes, but does have restrictions on alignment. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
