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Subject[42/50] Revert "block: rescan partitions on invalidated devices on -ENOMEDIA
2.6.33-longterm review patch.  If anyone has any objections, please let us know.

------------------
too"
This reverts commit 6f31747bfeb8c74e6d0a10ecef0abe2a04c5a6cb (commit
02e352287a40bd456eb78df705bf888bc3161d3f upstream)

This should have only been commited on .38 and newer, not older kernels
like this one, sorry.

Cc: Tejun Heo <tj@kernel.org>
Cc: David Zeuthen <zeuthen@gmail.com>
Cc: Martin Pitt <martin.pitt@ubuntu.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jens Axboe <jaxboe@fusionio.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
fs/block_dev.c | 27 +++++++++------------------
1 file changed, 9 insertions(+), 18 deletions(-)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1211,7 +1211,6 @@ static int __blkdev_get(struct block_dev
if (!bdev->bd_part)
goto out_clear;

- ret = 0;
if (disk->fops->open) {
ret = disk->fops->open(bdev, mode);
if (ret == -ERESTARTSYS) {
@@ -1227,18 +1226,9 @@ static int __blkdev_get(struct block_dev
mutex_unlock(&bdev->bd_mutex);
goto restart;
}
+ if (ret)
+ goto out_clear;
}
- /*
- * If the device is invalidated, rescan partition
- * if open succeeded or failed with -ENOMEDIUM.
- * The latter is necessary to prevent ghost
- * partitions on a removed medium.
- */
- if (bdev->bd_invalidated && (!ret || ret == -ENOMEDIUM))
- 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);
@@ -1246,6 +1236,8 @@ static int __blkdev_get(struct block_dev
bdi = &default_backing_dev_info;
bdev->bd_inode->i_data.backing_dev_info = bdi;
}
+ if (bdev->bd_invalidated)
+ rescan_partitions(disk, bdev);
} else {
struct block_device *whole;
whole = bdget_disk(disk, 0);
@@ -1272,14 +1264,13 @@ static int __blkdev_get(struct block_dev
put_disk(disk);
disk = NULL;
if (bdev->bd_contains == bdev) {
- ret = 0;
- if (bdev->bd_disk->fops->open)
+ if (bdev->bd_disk->fops->open) {
ret = bdev->bd_disk->fops->open(bdev, mode);
- /* the same as first opener case, read comment there */
- if (bdev->bd_invalidated && (!ret || ret == -ENOMEDIUM))
+ if (ret)
+ goto out_unlock_bdev;
+ }
+ if (bdev->bd_invalidated)
rescan_partitions(bdev->bd_disk, bdev);
- if (ret)
- goto out_unlock_bdev;
}
}
bdev->bd_openers++;



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