Btrfs: suppress printk() if all device I/O stats are zero
Code is added to suppress the I/O stats printing at mount time if all statistic values are zero. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
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1 changed files with 8 additions and 0 deletions
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@ -4884,6 +4884,14 @@ void btrfs_dev_stat_print_on_error(struct btrfs_device *dev)
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static void btrfs_dev_stat_print_on_load(struct btrfs_device *dev)
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static void btrfs_dev_stat_print_on_load(struct btrfs_device *dev)
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{
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{
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int i;
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for (i = 0; i < BTRFS_DEV_STAT_VALUES_MAX; i++)
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if (btrfs_dev_stat_read(dev, i) != 0)
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break;
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if (i == BTRFS_DEV_STAT_VALUES_MAX)
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return; /* all values == 0, suppress message */
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printk_in_rcu(KERN_INFO "btrfs: bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u\n",
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printk_in_rcu(KERN_INFO "btrfs: bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u\n",
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rcu_str_deref(dev->name),
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rcu_str_deref(dev->name),
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btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS),
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btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS),
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