kernel/linux.git/drivers/md/dm-cache-background-tracker.h, branch v6.1.174

dm: change "unsigned" to "unsigned int"

2023-04-13T14:55:17+00:00

[ Upstream commit 86a3238c7b9b759cb864f4f768ab2e24687dc0e6 ] Signed-off-by: Heinz Mauelshagen Signed-off-by: Mike Snitzer Stable-dep-of: f7b58a69fad9 ("dm: fix improper splitting for abnormal bios") Signed-off-by: Sasha Levin

dm cache: Add some documentation to dm-cache-background-tracker.h

2023-04-13T14:55:16+00:00

[ Upstream commit 22c40e134c4c7a828ac09d25a5a8597b1e45c031 ] Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Stable-dep-of: f7b58a69fad9 ("dm: fix improper splitting for abnormal bios") Signed-off-by: Sasha Levin

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07T18:28:31+00:00

The cache policy interfaces have been updated to work well with the new bio-prison v2 interface's ability to queue work immediately (promotion, demotion, etc) -- overriding benefit being reduced latency on processing IO through the cache. Previously such work would be left for the DM cache core to queue on various lists and then process in batches later -- this caused a serious delay in latency for IO driven by the cache. The background tracker code was factored out so that all cache policies can make use of it. Also, the "cleaner" policy has been removed and is now a variant of the smq policy that simply disallows migrations. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer