On Thu, May 27, 2010 at 11:06:54AM +0800, liubo wrote: > On 05/22/2010 01:03 AM, Josef Bacik wrote: > > In order for AIO to work, we need to implement aio_write. This patch converts > > our btrfs_file_write to btrfs_aio_write. I've tested this with xfstests and > > nothing broke, and the AIO stuff magically started working. Thanks, > > > > Signed-off-by: Josef Bacik <josef@xxxxxxxxxx> > > > > Hi, Josef, > > I've tested your patch(May 22) with my tools, and one case triggered a bug > which made writev operation hang up, more information is followed. > > - Steps to trigger it: > # mount /dev/sda8 /home/btrfsdisk -o nodatacow > # gcc direct-io.c -o direct-io > # ./direct-io O_DIRECT writev /home/btrfsdisk/testrw 4M Thanks for sending along this test program and bug report. We've fixed a few bugs in the O_DIRECT patches, and this is working now. The merged result is in the for-linus branch of the btrfs unstable tree. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
