4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Martijn Coenen <maco@xxxxxxxxxxx> [ Upstream commit 7c5014b0987a30e4989c90633c198aced454c0ec ] loop_set_status() calls loop_config_discard() to configure discard for the loop device; however, the discard configuration depends on whether the loop device uses encryption, and when we call it the encryption configuration has not been updated yet. Move the call down so we apply the correct discard configuration based on the new configuration. Signed-off-by: Martijn Coenen <maco@xxxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Bob Liu <bob.liu@xxxxxxxxxx> Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Genjian Zhang <zhanggenjian@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/block/loop.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1286,8 +1286,6 @@ loop_set_status(struct loop_device *lo, } } - loop_config_discard(lo); - memcpy(lo->lo_file_name, info->lo_file_name, LO_NAME_SIZE); memcpy(lo->lo_crypt_name, info->lo_crypt_name, LO_NAME_SIZE); lo->lo_file_name[LO_NAME_SIZE-1] = 0; @@ -1311,6 +1309,8 @@ loop_set_status(struct loop_device *lo, lo->lo_key_owner = uid; } + loop_config_discard(lo); + /* update dio if lo_offset or transfer is changed */ __loop_update_dio(lo, lo->use_dio);
