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authorNeilBrown <neilb@suse.de>2009-08-12 20:41:50 -0400
committerNeilBrown <neilb@suse.de>2009-08-12 20:41:50 -0400
commit4d484a4a7a5126410eed5f8dd329a33f6eeed068 (patch)
tree9fe49a23117adc2d475711f39a16c1718bab4b7f /kernel/softirq.c
parent1a67dde0abba36421a1257d01ba9de2f6d1c160a (diff)
md: allow upper limit for resync/reshape to be set when array is read-only
Normally we only allow the upper limit for a reshape to be decreased when the array not performing a sync/recovery/reshape, otherwise there could be races. But if an array is part-way through a reshape when it is assembled the reshape is started immediately leaving no window to set an upper bound. If the array is started read-only, the reshape will be suspended until the array becomes writable, so that provides a window during which it is perfectly safe to reduce the upper limit of a reshape. So: allow the upper limit (sync_max) to be reduced even if the reshape thread is running, as long as the array is still read-only. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'kernel/softirq.c')
0 files changed, 0 insertions, 0 deletions