btrfs: Moved repair code from inode.c to extent_io.c

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The raid-retry code in inode.c can be generalized so that it works for
metadata as well. Thus, this patch moves it to extent_io.c and makes the
raid-retry code a raid-repair code.

Repair works that way: Whenever a read error occurs and we have more
mirrors to try, note the failed mirror, and retry another. If we find a
good one, check if we did note a failure earlier and if so, do not allow
the read to complete until after the bad sector was written with the good
data we just fetched. As we have the extent locked while reading, no one
can change the data in between.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>

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This commit is contained in:

Jan Schmidt 2011-07-22 15:41:52 +02:00

parent 2774b2ca3d

commit 4a54c8c165

3 changed files with 393 additions and 159 deletions

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387

fs/btrfs/extent_io.c

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10

fs/btrfs/extent_io.h

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155

fs/btrfs/inode.c

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