34bc4ac1c1393af69e2a8704bcac09 author Sage Weil 1281041598 -0700 committer Sage Weil 1281041620 -0700 ceph: only queue async writeback on cap revocation if there is dirty data Normally, if the Fb cap bit is being revoked, we queue an async writeback. If there is no dirty data but we still hold the cap, this leaves the client sitting around doing nothing until the cap timeouts expire and the cap is released on its own (as it would have been without the revocation). Instead, only queue writeback if the bit is actually used (i.e., we have dirty data). If not, we can reply to the revocation immediately. Signed-off-by: Sage Weil 