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(parent: 2dc40f8) | patch
md: Fix read balancing in RAID1 and RAID10 on drives > 2TB
authorNeilBrown <neilb@suse.de>
Fri, 7 May 2010 22:20:17 +0000 (08:20 +1000)
committerNeilBrown <neilb@suse.de>
Tue, 18 May 2010 05:28:00 +0000 (15:28 +1000)
commitaf3a2cd6b8a479345786e7fe5e199ad2f6240e56
tree10690853d80455e69bcc0d027ad6c8b9c7951332tree | snapshot
parent2dc40f80945ac3e5ec05c3a6c75baf09b13cee51commit | diff
md: Fix read balancing in RAID1 and RAID10 on drives > 2TB

read_balance uses a "unsigned long" for a sector number which
will get truncated beyond 2TB.
This will cause read-balancing to be non-optimal, and can cause
data to be read from the 'wrong' branch during a resync.  This has a
very small chance of returning wrong data.

Reported-by: Jordan Russell <jr-list-2010@quo.to>
Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
drivers/md/raid1.c diff | blob | history
drivers/md/raid10.c diff | blob | history
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