redonkable/alistair23-linux
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Btrfs: remove batch plug in run_scheduled_IO

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Block layer has a limit on plug, ie. BLK_MAX_REQUEST_COUNT == 16, so
we don't gain benefits by batching 64 bios here.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2017-09-01 16:14:26 -06:00 committed by David Sterba
parent 0b07194bb5
commit 219d33b26a
1 changed files with 0 additions and 6 deletions
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6
fs/btrfs/volumes.c
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@ -517,12 +517,6 @@ loop_lock:
&device->work);
goto done;
}
/* unplug every 64 requests just for good measure */
if (batch_run % 64 == 0) {
blk_finish_plug(&plug);
blk_start_plug(&plug);
sync_pending = 0;
}
}
cond_resched();