From mboxrd@z Thu Jan 1 00:00:00 1970 From: gmate.amit@gmail.com (Kumar amit mehta) Date: Fri, 26 Jul 2013 02:04:06 -0400 Subject: Direct IO and Page cache In-Reply-To: References: <20130726031549.GB8707@gmail.com> <20130726040231.GD8707@gmail.com> Message-ID: <20130726060406.GE8707@gmail.com> To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org On Fri, Jul 26, 2013 at 06:31:34PM +0800, Chinmay V S wrote: > 1. Do not worry about coherency between the page-cache and the data > transferred using O_DIRECT. The kernel will invalidate the cache after > an O_DIRECT write and flush the cache before an O_DIRECT read. Thank you. Grey skies are clearing up now. !!amit