4.5-stable review patch. If anyone has any objections, please let me know.
------------------ From: Wenwei Tao <[email protected]> commit 3681c85dffda70e551dead31c8d102bd69033fe8 upstream. After register null_blk devices into lightnvm, we forget to add these devices to the the nullb_list, makes them invisible to the null_blk driver. Signed-off-by: Wenwei Tao <[email protected]> Fixes: a514379b0c77 ("null_blk: oops when initializing without lightnvm") Signed-off-by: Jens Axboe <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/block/null_blk.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -742,10 +742,11 @@ static int null_add_dev(void) add_disk(disk); +done: mutex_lock(&lock); list_add_tail(&nullb->list, &nullb_list); mutex_unlock(&lock); -done: + return 0; out_cleanup_lightnvm:
