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Btrfs: change core code of btrfs to support the device replace operations

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This commit contains all the essential changes to the core code
of Btrfs for support of the device replace procedure.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Stefan Behrens
2012-11-06 13:15:27 +01:00
committed by Josef Bacik
parent e93c89c1aa
commit 8dabb7420f
7 changed files with 111 additions and 14 deletions
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7
fs/btrfs/scrub.c
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@@ -2843,12 +2843,17 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
return -EIO;
}
if (dev->scrub_device) {
btrfs_dev_replace_lock(&fs_info->dev_replace);
if (dev->scrub_device ||
(!is_dev_replace &&
btrfs_dev_replace_is_ongoing(&fs_info->dev_replace))) {
btrfs_dev_replace_unlock(&fs_info->dev_replace);
mutex_unlock(&fs_info->scrub_lock);
mutex_unlock(&fs_info->fs_devices->device_list_mutex);
scrub_workers_put(fs_info);
return -EINPROGRESS;
}
btrfs_dev_replace_unlock(&fs_info->dev_replace);
sctx = scrub_setup_ctx(dev, is_dev_replace);
if (IS_ERR(sctx)) {
mutex_unlock(&fs_info->scrub_lock);