md/raid10: check In_sync flag in 'enough()'.

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It isn't really enough to check that the rdev is present, we need to
also be sure that the device is still In_sync.

Doing this requires using rcu_dereference to access the rdev, and
holding the rcu_read_lock() to ensure the rdev doesn't disappear while
we look at it.

Signed-off-by: NeilBrown <neilb@suse.de>

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NeilBrown 2013-06-11 15:08:03 +10:00

parent 635f6416a2

commit 725d6e579f

1 changed files with 11 additions and 4 deletions

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drivers/md/raid10.c

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