tree ad35458dfc86b7e197688de9452173131af5a184
parent dce580ca403a3e99806a39d54bcb0ad631dee01f
author Naohiro Aota <naohiro.aota@wdc.com> 1582602975 +0900
committer David Sterba <dsterba@suse.com> 1584979309 +0100

btrfs: parameterize dev_extent_min for chunk allocation

Currently, we ignore a device whose available space is less than
"BTRFS_STRIPE_LEN * dev_stripes". This is a lower limit for current
allocation policy (to maximize the number of stripes). This commit
parameterizes dev_extent_min, so that other policies can set their own
lower limitat to ignore a device with insufficient space.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>