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3 Commits

Author SHA1 Message Date
Johannes Berg
d65197ad52 um: Fix time-travel=inf-cpu with xor/raid6 
Today, I erroneously built a time-travel configuration with btrfs
enabled, and noticed it cannot boot in time-travel=inf-cpu mode,
both xor and raid6 speed measurement gets stuck.

For xor, work around it by picking the first algorithm if inf-cpu
mode is enabled.

For raid6, I didn't find such a workaround, so disallow enabling
time-travel mode if RAID6_PQ_BENCHMARK is enabled.

With this, and RAID6_PQ_BENCHMARK disabled, I can boot a kernel
that has btrfs enabled in time-travel=inf-cpu mode.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
 2020-01-19 22:42:06 +01:00
Al Viro
f5e900770f um: switch to generic-y 
kill wrapper headers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
 2011-11-02 14:15:30 +01:00
Al Viro
8ede0bdb63 x86, um: initial part of asm-um move 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
 2008-10-22 22:55:19 -07:00