From c4db59d31e39ea067c32163ac961e9c80198fd37 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 20 Jan 2015 14:05:00 -0700 Subject: [PATCH] fs: don't reassign dirty inodes to default_backing_dev_info If we have dirty inodes we need to call the filesystem for it, even if the device has been removed and the filesystem will error out early. The current code does that by reassining all dirty inodes to the default backing_dev_info when a bdi is unlinked, but that's pretty pointless given that the bdi must always outlive the super block. Instead of stopping writeback at unregister time and moving inodes to the default bdi just keep the current bdi alive until it is destroyed. The containing objects of the bdi ensure this doesn't happen until all writeback has finished by erroring out. Signed-off-by: Christoph Hellwig Reviewed-by: Tejun Heo Reviewed-by: Jan Kara Killed the redundant WARN_ON(), as noticed by Jan. Signed-off-by: Jens Axboe --- Reading git-format-patch failed