På to , 26/08/2004 klokka 14:38, skreiv David Greaves:Perfect answer
David Rolenc wrote:
I am trying to get O_STREAMING (Robert Love patch for 2.4) behavior in 2.6 and just a glance at fadvise.c suggests that POSIX_FADV_NOREUSE is not implemented any differently than POSIX_FADV_WILLNEED. Am I missing something? I want to read data from disk with readahead and drop the data from the page cache as soon as I am done with it. Do I have to call fadvise with POSIX_FADV_DONTNEED after every read?And will this work over nfs?
What do you mean?
The client will of course respect fadvise() if the generic VM code
supports it, but there is no NFS protocol support for this, so the
client is not able to communicate your fadvise call on to the server.