src/patches/suse-2.6.27.31/patches.drivers/bdev-resize-check-for-device-resize

   1 Subject: Check for device resize when rescanning partitions
   2 From: Andrew Patterson <andrew.patterson@hp.com>
   3 Date: Thu Oct 9 08:56:12 2008 +0200:
   4 Git: 9bc3ffbfbdf71fefda8a261ef8d6fdc388a29b42
   5 References: FATE#302348,FATE#303786
   6
   7 Check for device resize in the rescan_partitions() routine. If the device
   8 has been resized, the bdev size is set to match. The rescan_partitions()
   9 routine is called when opening the device and when calling the
  10 BLKRRPART ioctl.
  11
  12 Adapted for SLES11, based on the original commit.
  13
  14 Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
  15 Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
  16 Signed-off-by: Hannes Reinecke <hare@suse.de>
  17 ---
  18  fs/partitions/check.c |    3 ++-
  19  1 files changed, 2 insertions(+), 1 deletions(-)
  20
  21 diff --git a/fs/partitions/check.c b/fs/partitions/check.c
  22 index ecc3330..f74d929 100644
  23 --- a/fs/partitions/check.c
  24 +++ b/fs/partitions/check.c
  25 @@ -480,11 +480,12 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
  26         res = invalidate_partition(disk, 0);
  27         if (res)
  28                 return res;
  29 -       bdev->bd_invalidated = 0;
  30         for (p = 1; p < disk->minors; p++)
  31                 delete_partition(disk, p);
  32         if (disk->fops->revalidate_disk)
  33                 disk->fops->revalidate_disk(disk);
  34 +       check_disk_size_change(disk, bdev);
  35 +       bdev->bd_invalidated = 0;
  36         if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))
  37                 return 0;
  38         if (IS_ERR(state))      /* I/O error reading the partition table */
  39 --
  40 1.5.2.4
  41