From 02db0844beffc1c4e99d750be58ffb3ed95d6d62 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 21 Jun 2012 16:03:58 -0400 Subject: [PATCH] Btrfs: add DEVICE_READY ioctl This will be used in conjunction with btrfs device ready . This is needed for initrd's to have a nice and lightweight way to tell if all of the devices needed for a file system are in the cache currently. This keeps them from having to do mount+sleep loops waiting for devices to show up. Thanks, Signed-off-by: Josef Bacik --- Reading git-format-patch failed