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drbd: bitmap keep track of changes vs on-disk bitmap
authorLars Ellenberg <lars.ellenberg@linbit.com>
Wed, 15 Dec 2010 07:59:11 +0000 (08:59 +0100)
committerPhilipp Reisner <philipp.reisner@linbit.com>
Thu, 10 Mar 2011 10:43:19 +0000 (11:43 +0100)
When we set or clear bits in a bitmap page,
also set a flag in the page->private pointer.

This allows us to skip writes of unchanged pages.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

No differences found
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