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dm cache background tracker: limit amount of background work that may be issued at...
authorJoe Thornber <ejt@redhat.com>
Wed, 8 Nov 2017 11:41:43 +0000 (06:41 -0500)
committerMike Snitzer <snitzer@redhat.com>
Fri, 10 Nov 2017 20:45:03 +0000 (15:45 -0500)
commit64748b1645b81399d01ad86657c5bbe097c1701c
treeaa903c1a0cc40df6b51f61b8a595c897c52f7697
parentdeb71918ae29e23ff7f4537f5ff654f8b6580af2
dm cache background tracker: limit amount of background work that may be issued at once

On large systems the cache policy can be over enthusiastic and queue far
too much dirty data to be written back.  This consumes memory.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-cache-background-tracker.c