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author | NeilBrown <neilb@suse.de> | 2009-08-12 20:41:50 -0400 |
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committer | NeilBrown <neilb@suse.de> | 2009-08-12 20:41:50 -0400 |
commit | 4d484a4a7a5126410eed5f8dd329a33f6eeed068 (patch) | |
tree | 9fe49a23117adc2d475711f39a16c1718bab4b7f /arch/m68k | |
parent | 1a67dde0abba36421a1257d01ba9de2f6d1c160a (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 'arch/m68k')
0 files changed, 0 insertions, 0 deletions