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btrfs-progs: volumes: Allow find_free_dev_extent() to return maximum hole size 

Just as kernel find_free_dev_extent(), allow it to return maximum hole
size for us to build device list for later chunk allocator rework.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2018-02-09 15:44:23 +08:00 committed by David Sterba
parent 12becfe122
commit f174972d2d
1 changed files with 3 additions and 3 deletions
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6
volumes.c
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@ -516,10 +516,10 @@ out:
}
static int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
u64 *start)
u64 *start, u64 *len)
{
/* FIXME use last free of some kind */
return find_free_dev_extent_start(device, num_bytes, 0, start, NULL);
return find_free_dev_extent_start(device, num_bytes, 0, start, len);
}
static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
@ -543,7 +543,7 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
* is responsible to make sure it's free.
*/
if (!convert) {
ret = find_free_dev_extent(device, num_bytes, start);
ret = find_free_dev_extent(device, num_bytes, start, NULL);
if (ret)
goto err;
}