tree f98801c0cb9e80a22fee86c0001ec0a4e3153f0a
parent c8fd0d37f81dd38e3f319f4938b45a5aaf0dfc58
author Yan, Zheng <zyan@redhat.com> 1503909413 +0800
committer Ilya Dryomov <idryomov@gmail.com> 1504720614 +0200

ceph: queue cap snap only when snap realm's context changes

If we create capsnap when snap realm's context does not change, the
new capsnap's snapc is equal to ci->i_head_snapc. Page writeback code
can't differentiates dirty pages associated with the new capsnap from
dirty pages associated with i_head_snapc.

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