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btrfs: remove redundant time check in transaction kthread loop
The value obtained from ktime_get_seconds() is guaranteed to be monotonically increasing since it's taken from CLOCK_MONOTONIC. As transaction_kthread obtains a reference to the currently running transaction under holding btrfs_fs_info::trans_lock it's guaranteed to: a) see an initialized 'cur', whose start_time is guaranteed to be smaller than 'now' or b) not obtain a 'cur' and simply go to sleep. Given this remove the unnecessary check, if it sees now < cur->start_time this would imply there are far greater problems on the machine. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -1792,8 +1792,7 @@ static int transaction_kthread(void *arg)
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now = ktime_get_seconds();
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if (cur->state < TRANS_STATE_COMMIT_START &&
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(now < cur->start_time ||
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now - cur->start_time < fs_info->commit_interval)) {
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now - cur->start_time < fs_info->commit_interval) {
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spin_unlock(&fs_info->trans_lock);
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delay = msecs_to_jiffies(5000);
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goto sleep;
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