block: move bd_set_size() above rescan_partitions() in __blkdev_get()

02e352287a4 (block: rescan partitions on invalidated devices on
-ENOMEDIA too) relocated partition rescan above explicit bd_set_size()
to simplify condition check.  As rescan_partitions() does its own bdev
size setting, this doesn't break anything; however,
rescan_partitions() prints out the following messages when adjusting
bdev size, which can be confusing.

  sda: detected capacity change from 0 to 146815737856
  sdb: detected capacity change from 0 to 146815737856

This patch restores the original order and remove the warning
messages.

stable: Please apply together with 02e352287a4 (block: rescan
        partitions on invalidated devices on -ENOMEDIA too).

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Tony Luck <tony.luck@gmail.com>
Tested-by: Tony Luck <tony.luck@gmail.com>
Cc: stable@kernel.org

Stable note: 2.6.39 only.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 9 insertions, 8 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index d7c2e0fddc6f..1f2b19978333 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1120,6 +1120,15 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                                         goto restart;
                                 }
                         }
+
+                        if (!ret && !bdev->bd_openers) {
+                                bd_set_size(bdev,(loff_t)get_capacity(disk)<<9);
+                                bdi = blk_get_backing_dev_info(bdev);
+                                if (bdi == NULL)
+                                        bdi = &default_backing_dev_info;
+                                bdev_inode_switch_bdi(bdev->bd_inode, bdi);
+                        }
+
                         /*
                          * If the device is invalidated, rescan partition
                          * if open succeeded or failed with -ENOMEDIUM.
@@ -1130,14 +1139,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                                 rescan_partitions(disk, bdev);
                         if (ret)
                                 goto out_clear;
-
-                        if (!bdev->bd_openers) {
-                                bd_set_size(bdev,(loff_t)get_capacity(disk)<<9);
-                                bdi = blk_get_backing_dev_info(bdev);
-                                if (bdi == NULL)
-                                        bdi = &default_backing_dev_info;
-                                bdev_inode_switch_bdi(bdev->bd_inode, bdi);
-                        }
                 } else {
                         struct block_device *whole;
                         whole = bdget_disk(disk, 0);