Btrfs: Fix the multi-bio code to save the original bio for completion

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The multi-bio code is responsible for duplicating blocks in raid1 and
single spindle duplication.  It has counters to make sure all of
the locations for a given extent are properly written before io completion
is returned to the higher layers.

But, it didn't always complete the same bio it was given, sometimes a
clone was completed instead.  This lead to problems with the async
work queues because they saved a pointer to the bio in a struct off
bi_private.

The fix is to remember the original bio and only complete that one.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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This commit is contained in:

Chris Mason 2008-08-05 10:13:57 -04:00

parent ae01a0abf3

commit 7d2b4daa67

2 changed files with 11 additions and 1 deletions

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11

fs/btrfs/volumes.c

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1

fs/btrfs/volumes.h

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