Zach BrownandZach Brown d1e62a43c9 scoutfs: fix leaking alloc bits in merge ...

In a merge where the input and source trees are the same, the input
block can be an initial pre-cow version of the dirty source block.
Dirtying blocks in the change will clear allocations in the dirty source
block but they will remain in the pre-cow input block.  The merge can
then set these blocks in the dst, even though they were also used by
allocation, because they're still set in the pre-cow input block.

This fix is clumsy, but minimal and specific to this problem.  A more
thorough fix is being worked on which introduces more staging more
allocator trees and should stop calls that are modifying the current
active avail or free trees.

Signed-off-by: Zach Brown <zab@versity.com>

2020-08-26 14:39:12 -07:00

kmod

scoutfs: fix leaking alloc bits in merge

2020-08-26 14:39:12 -07:00

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