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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-25 10:05:37 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-25 10:05:37 -0700
commit2849a3a945d0e440fa245c47c49c80ef1cc103c3 (patch)
tree616868130f4b8a063cfa1c138135c10247a4da0e /fs/btrfs/volumes.c
parent417c765af914106f5e76c4e0181dd555fe6a89a0 (diff)
parent8bb9660418e05bb1845ac1a2428444d78e322cc7 (diff)
Merge 3.9-rc4 into usb-next
This picks up the fixes we had for USB in 3.9-rc4 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/btrfs/volumes.c')
-rw-r--r--fs/btrfs/volumes.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 6b9cff42265..5989a92236f 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -684,6 +684,12 @@ int btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
__btrfs_close_devices(fs_devices);
free_fs_devices(fs_devices);
}
+ /*
+ * Wait for rcu kworkers under __btrfs_close_devices
+ * to finish all blkdev_puts so device is really
+ * free when umount is done.
+ */
+ rcu_barrier();
return ret;
}