luminous: mds: check ongoing catter-gather process before capping log #17852
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When deactivating mds, MDLog::trim() may start scatter-gather process on mdsdir inode. Locker::scatter_writebehind() submits log entry. So mds should make sure there is no scatter-gather before capping log. Fixes: http://tracker.ceph.com/issues/21467 Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
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* refs/remotes/upstream/pull/17852/head: mds: check ongoing catter-gather process before capping log Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
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When deactivating mds, MDLog::trim() may start scatter-gather
process on mdsdir inode. Locker::scatter_writebehind() submits
log entry. So mds should make sure there is no scatter-gather
before capping log.
Fixes: http://tracker.ceph.com/issues/21467
Signed-off-by: "Yan, Zheng" zyan@redhat.com