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ceph: make sure write caps are registered with auth MDS 

Only auth MDS can issue write caps to clients, so don't consider
write caps registered with non-auth MDS as valid.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
This commit is contained in:
Yan, Zheng 2014-03-08 09:51:45 +08:00 committed by Sage Weil
parent c137a32a40
commit a255060451
1 changed files with 4 additions and 1 deletions
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5
fs/ceph/caps.c
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@ -885,7 +885,10 @@ int __ceph_caps_mds_wanted(struct ceph_inode_info *ci)
cap = rb_entry(p, struct ceph_cap, ci_node);
if (!__cap_is_valid(cap))
continue;
mds_wanted |= cap->mds_wanted;
if (cap == ci->i_auth_cap)
mds_wanted |= cap->mds_wanted;
else
mds_wanted |= (cap->mds_wanted & ~CEPH_CAP_ANY_FILE_WR);
}
return mds_wanted;
}