ceph: ignore wbc->range_{start,end} when write back snapshot data

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writepages() needs to write dirty pages to OSD in strict order of
snapshot context. It must first write dirty pages associated with
the oldest snapshot context. In the write range case, dirty pages
in the specified range can be associated with newer snapc. They
are not writeable until we write all dirty pages associated with
the oldest snapc.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

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Yan, Zheng 2017-09-01 16:53:58 +08:00 • committed by Ilya Dryomov

parent 590e9d9861

commit 2a2d927e35

1 changed files with 46 additions and 34 deletions

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fs/ceph/addr.c

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