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btrfs-progs: device usage: don't calculate slack on missing device 

Print      Device slack:              0.00B
instead of Device slack:           16.00EiB

Signed-off-by: Patrik Lundquist <patrik.lundquist@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Patrik Lundquist 2017-08-31 13:00:24 +02:00 committed by David Sterba
parent 88ef0b8397
commit 8c6b05d726
1 changed files with 2 additions and 1 deletions
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3
cmds-fi-usage.c
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@ -1040,6 +1040,7 @@ void print_device_sizes(struct device_info *devinfo, unsigned unit_mode)
pretty_size_mode(devinfo->device_size, unit_mode));
printf(" Device slack: %*s%10s\n",
(int)(20 - strlen("Device slack")), "",
pretty_size_mode(devinfo->device_size - devinfo->size,
pretty_size_mode(devinfo->device_size > 0 ?
devinfo->device_size - devinfo->size : 0,
unit_mode));
}