ceph: avoid sending unnessesary FLUSHSNAP message

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when a snap notification contains no new snapshot, we can avoid
sending FLUSHSNAP message to MDS. But we still need to create
cap_snap in some case because it's required by write path and
page writeback path

Signed-off-by: Yan, Zheng <zyan@redhat.com>

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Yan, Zheng 2015-05-01 16:57:16 +08:00 • committed by Ilya Dryomov

parent 5dda377cf0

commit 8605609049

3 changed files with 78 additions and 45 deletions

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69

fs/ceph/caps.c

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49

fs/ceph/snap.c

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5

fs/ceph/super.h

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