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authorMikulas Patocka <mpatocka@redhat.com>2009-12-10 23:51:59 +0000
committerAlasdair G Kergon <agk@redhat.com>2009-12-10 23:51:59 +0000
commitb09acf1aa79462bdacfe6744b469a17722a52702 (patch)
tree27ef83ed0d0bbf35938814f8ba3206e7881a170d /drivers/watchdog/sbc_fitpc2_wdt.c
parent4184153f9e483f9bb63339ed316e059962fe9794 (diff)
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dm raid1: split touched state into two
Split the variable "touched" into two, "touched_dirtied" and "touched_cleaned", set when some region was dirtied or cleaned. This will be used to optimize flushes. After a transition from "dirty" to "clean" state we don't have flush hardware cache on the log device. After a transition from "clean" to "dirty" the cache must be flushed. Before a transition from "clean" to "dirty" state we don't have to flush all the raid legs. Before a transition from "dirty" to "clean" we must flush all the legs to make sure that they are really in sync. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/watchdog/sbc_fitpc2_wdt.c')
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