summaryrefslogtreecommitdiff
path: root/drivers/fpga/fpga-mgr.c
diff options
context:
space:
mode:
authorJoe Thornber <ejt@redhat.com>2017-05-11 08:22:31 -0400
committerMike Snitzer <snitzer@redhat.com>2017-05-14 21:54:33 -0400
commit701e03e4e180f0cd97d4139a32e2b2d879d12da2 (patch)
tree891165d167eedd13ab433a86377d9f46b2d44e97 /drivers/fpga/fpga-mgr.c
parent6cf4cc8f8b3b7bc9e3c04a7eab44b985d50029fc (diff)
dm cache: track all IO to the cache rather than just the origin device's IO
IO tracking used to throttle writebacks when the origin device is busy. Even if all the IO is going to the fast device, writebacks can significantly degrade performance. So track all IO to gauge whether the cache is busy or not. Otherwise, synthetic IO tests (e.g. fio) that might send all IO to the fast device wouldn't cause writebacks to get throttled. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions