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(parent: 99ba2ae) | patch
dm cache: io destined for the cache device can now serve as tick bios
authorJoe Thornber <ejt@redhat.com>
Mon, 21 Oct 2013 11:51:45 +0000 (12:51 +0100)
committerMike Snitzer <snitzer@redhat.com>
Sat, 9 Nov 2013 22:55:49 +0000 (17:55 -0500)
commitf8e5f01a3266e68e29024edc2bf2dbf81a864f41
treee60fb7b744c0957c71c00a7ef5936dbf4814ebcctree | snapshot
parent99ba2ae4cd876bbcedb01d94c1a7952ce171418ecommit | diff
dm cache: io destined for the cache device can now serve as tick bios

Previously only origin bios could trigger ticks, which meant if all
the io was destined for the cache no ticks were generated.  If no ticks
are generated then multiple hits, and movements in general, are
attributed to the same tick.

Only a stop gap fix, we need a better solution.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-cache-target.c diff | blob | history
Andy's Linux Kernel repo