tree 8ed497994e3e1b9949c3d6907ed901ff502b1f5e
parent af0ed569d7019f1b49e9e51e77b47092e656b00e
author Sage Weil <sage@newdream.net> 1311704801 -0700
committer Sage Weil <sage@newdream.net> 1311704801 -0700

ceph: only queue capsnap if caps are dirty

We used to go into this branch if i_wrbuffer_ref_head was non-zero.  This
was an ancient check from before we were careful about dealing with all
kinds of caps (and not just dirty pages).  It is cleaner to only queue a
capsnap if there is an actual dirty cap.  If we are racing with...
something...we will end up here with ci->i_wrbuffer_refs but no dirty
caps.

Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>