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authorJens Axboe <axboe@fb.com>2017-02-13 09:37:26 -0700
committerJens Axboe <axboe@fb.com>2017-02-13 09:37:26 -0700
commit53f39eeaa26385ad41ebea3dd6d7b2c14e98369a (patch)
tree94d5f73e3bbd6e18c5283e3562f3f78fa7a4618d
parentb5093f9c3548fc0b63a4c29be1d9204e645a274b (diff)
parentecdd09597a57251323b0de50e3d45e69298c4a83 (diff)
Merge branch 'for-4.11/block' into for-next
-rw-r--r--drivers/block/loop.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index f347285c67ec..304377182c1a 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1097,9 +1097,12 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
if ((unsigned int) info->lo_encrypt_key_size > LO_KEY_SIZE)
return -EINVAL;
+ /* I/O need to be drained during transfer transition */
+ blk_mq_freeze_queue(lo->lo_queue);
+
err = loop_release_xfer(lo);
if (err)
- return err;
+ goto exit;
if (info->lo_encrypt_type) {
unsigned int type = info->lo_encrypt_type;
@@ -1114,12 +1117,14 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
err = loop_init_xfer(lo, xfer, info);
if (err)
- return err;
+ goto exit;
if (lo->lo_offset != info->lo_offset ||
lo->lo_sizelimit != info->lo_sizelimit)
- if (figure_loop_size(lo, info->lo_offset, info->lo_sizelimit))
- return -EFBIG;
+ if (figure_loop_size(lo, info->lo_offset, info->lo_sizelimit)) {
+ err = -EFBIG;
+ goto exit;
+ }
loop_config_discard(lo);
@@ -1156,7 +1161,9 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
/* update dio if lo_offset or transfer is changed */
__loop_update_dio(lo, lo->use_dio);
- return 0;
+ exit:
+ blk_mq_unfreeze_queue(lo->lo_queue);
+ return err;
}
static int