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Yan, Zheng committed 5b64640cf65
ceph: scattered page writeback This patch makes ceph_writepages_start() try using single OSD request to write all dirty pages within a strip unit. When a nonconsecutive dirty page is found, ceph_writepages_start() tries starting a new write operation to existing OSD request. If it succeeds, it uses the new operation to writeback the dirty page. Signed-off-by: Yan, Zheng <zyan@redhat.com>