On 06/21/16 12:24, Anand Jain wrote: > From: Anand Jain <Anand.Jain@xxxxxxxxxx> > > Further to the commit > bc178622d40d87e75abc131007342429c9b03351 > btrfs: use rcu_barrier() to wait for bdev puts at unmount > > This patch implements a method to time wait on the __free_device() > which actually does the bdev put. This is needed as the user space > running 'btrfs fi show -d' immediately after the replace and > unmount, is still reading older information from the device. > > mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg54188.html > > Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx> > [updates: bc178622d40d87e75abc131007342429c9b03351] > --- > v2: Also to make sure bdev_closing is set it needs rcu_barrier(), > restored rcu_barrier(). Looks like this one works reliably again. ;) Tested with a slow disk, no long unmounts or timeout messages. Tested-by: Holger Hoffstätte <holger.hoffstaette@xxxxxxxxxxxxxxxxxxxxxx> thanks! Holger -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
