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Commit b50c259e authored by NeilBrown's avatar NeilBrown
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md/raid10: fix two bugs in handling of known-bad-blocks.



If we discover a bad block when reading we split the request and
potentially read some of it from a different device.

The code path of this has two bugs in RAID10.
1/ we get a spin_lock with _irq, but unlock without _irq!!
2/ The calculation of 'sectors_handled' is wrong, as can be clearly
   seen by comparison with raid1.c

This leads to at least 2 warnings and a probable crash is a RAID10
ever had known bad blocks.

Cc: stable@vger.kernel.org (v3.1+)
Fixes: 856e08e2
Reported-by: default avatarDamian Nowak <spam@nowaker.net>
URL: https://bugzilla.kernel.org/show_bug.cgi?id=68181


Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent 1cc03eb9
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