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

02e352287a (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 02e352287a (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>
This commit is contained in:
Tejun Heo 2011-05-23 13:26:07 +02:00 committed by Jens Axboe
parent 95cf3dd9db
commit 7e69723fef
1 changed files with 9 additions and 8 deletions
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17
fs/block_dev.c
View File

@ -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);