Btrfs: fix missing flush when committing a transaction

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Consider the following case:
	Task1				Task2
	start_transaction
					commit_transaction
					  check pending snapshots list and the
					  list is empty.
	add pending snapshot into list
					  skip the delalloc flush
	end_transaction
					  ...

And then the problem that the snapshot is different with the source subvolume
happen.

This patch fixes the above problem by flush all pending stuffs when all the
other tasks end the transaction.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

...

This commit is contained in:

Miao Xie 2012-11-01 07:33:14 +00:00 • committed by Josef Bacik

parent b7d5b0a819

commit ca46963718

1 changed files with 47 additions and 35 deletions

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fs/btrfs/transaction.c

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