Re: [PATCH] Btrfs: remove batch plug in run_scheduled_IO

2017-09-04 Thread David Sterba
On Fri, Sep 01, 2017 at 04:14:26PM -0600, Liu Bo wrote: > Block layer has a limit on plug, ie. BLK_MAX_REQUEST_COUNT == 16, so > we don't gain benefits by batching 64 bios here. So this effectively does not change anything on the btrfs side, but we can remove code that relies on some internal

[PATCH] Btrfs: remove batch plug in run_scheduled_IO

2017-09-01 Thread Liu Bo
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 --- fs/btrfs/volumes.c | 6 -- 1 file changed, 6 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index