Re: Re: [PATCH 12/19] bcache: update bucket_in_use periodically

From: Tang Junhui <redacted>

Hello Eric

quoted

From my personal opinion, updating bucket_in_use is for acting garbage
collection. If number of bucket in use is not updated in time, garbage
collection won't start due to old bucket_in_use still beyond
CUTOFF_WRITEBACK_SYNC.

We may maintain an atomic counter per-cache set for dirty buckets, and
update it at some locations when allocating or reclaiming bucket. This
counter is unnecessary to be very accurate, just accurate enough for
should_writeback() working correctly.

I am also looking at it for a better solution as well.

Hi Coli & Tang,

Have either of you had a chance to come up with a solution to this?

This patch is updated by 
[PATCH] [PATCH V2] bcache: update bucket_in_use in real time
and it has been applied to Mike's tree. 

Regards,

Tang