From: NeilBrown Date: Wed, 25 Feb 2009 02:18:47 +0000 (+1100) Subject: md/raid10: Don't skip more than 1 bitmap-chunk at a time during recovery. X-Git-Tag: v2.6.27.20~49 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d56e3f4ea3854531d1ab2bd6a490c3ea41c8d577;p=pandora-kernel.git md/raid10: Don't skip more than 1 bitmap-chunk at a time during recovery. commit 09b4068a7fe442efc40e9dcbcf5ff37c3338ab15 upstream. When doing recovery on a raid10 with a write-intent bitmap, we only need to recovery chunks that are flagged in the bitmap. However if we choose to skip a chunk as it isn't flag, the code currently skips the whole raid10-chunk, thus it might not recovery some blocks that need recovering. This patch fixes it. In case that is confusing, it might help to understand that there is a 'raid10 chunk size' which guides how data is distributed across the devices, and a 'bitmap chunk size' which says how much data corresponds to a single bit in the bitmap. This bug only affects cases where the bitmap chunk size is smaller than the raid10 chunk size. Signed-off-by: NeilBrown Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed