On Fri, Apr 13, 2012 at 10:27:35AM +0800, Shaohua Li wrote: > > flush request is issued in transaction commit code path, so looks using > GFP_KERNEL to allocate memory for flush request bio falls into the classic > deadlock issue. I saw btrfs and dm get it right, but ext4, xfs and md are > using GFP_KERNEL, which makes me confused. Hoping filesystem developers > clarify. Only one of the 5 calls XFS makes to blkdev_issue_flush() is questionable. Probably should use GFP_NOFS by default, though, so we don't trip over this problem... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
