btrfs: parameterize dev_extent_min for chunk allocation

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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>

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Naohiro Aota 2020-02-25 12:56:15 +09:00 • committed by David Sterba

parent dce580ca40

commit 6aafb30384

1 changed files with 5 additions and 4 deletions

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fs/btrfs/volumes.c

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