On Tue, Oct 12, 2021 at 05:08:27PM +0200, Christoph Hellwig wrote:

On Tue, Oct 12, 2021 at 11:06:51PM +0800, Ming Lei wrote:

quoted

quoted

We can get rid of the QUEUE_FLAG_QUIESCED flag now and just look
at ->quiesce_depth directly.

I'd rather not to do that given we need to check QUEUE_FLAG_QUIESCED in fast
path.

Checking an integer vs checking a bit is easier actually faster or at
least the same speed depending on the architecture / micro architecture.

->queue_flag is always hot, but quiesce_depth can't be and shouldn't be
since it is used very less.


-- 
Ming