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btrfs-progs: update help for device stats

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Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2015-08-25 17:30:37 +02:00
parent cc31e6cf50
commit 25ff5e53e0
1 changed files with 3 additions and 1 deletions
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4
cmds-device.c
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@ -349,7 +349,9 @@ out:
static const char * const cmd_device_stats_usage[] = {
"btrfs device stats [-z] <path>|<device>",
"Show current device IO stats. -z to reset stats afterwards.",
"Show current device IO stats.",
"",
"-z show current stats and reset values to zero",
NULL
};