btrfs: Don't BUG_ON() errors in update_ref_for_cow()

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The only caller of update_ref_for_cow() is __btrfs_cow_block() which was
originally ignoring any return values. update_ref_for_cow() however doesn't
look like a candidate to become a void function - there are a few places
where errors can occur.

So instead I changed update_ref_for_cow() to bubble all errors up (instead
of BUG_ON). __btrfs_cow_block() was then updated to catch and BUG_ON() any
errors from update_ref_for_cow(). The end effect is that we have no change
in behavior, but about 8 different places where a BUG_ON(ret) was removed.

Obviously a future patch will have to address the BUG_ON() in
__btrfs_cow_block().

Signed-off-by: Mark Fasheh <mfasheh@suse.de>

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This commit is contained in:

Mark Fasheh 2011-08-08 13:20:18 -07:00 • committed by David Sterba

parent ce598979be

commit be1a5564fd

1 changed files with 7 additions and 4 deletions

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fs/btrfs/ctree.c

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