Have a kernel.org bugzilla entry to track the bug. http://article.gmane.org/gmane.comp.file-systems.ext4/13762 I noticed yesterday that a write to fallocate space via directIO results in fallback to buffer_IO. ie the userspace pages get copied to the page cache and then call a sync. I guess this defeat the purpose of using directIO. May be we should consider this a high priority bug. -aneesh
This is all fixed with mingming's patches now, right?
yes ,with the changes from mingming we should be able to close the bug