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ceph: set mds_want according to cap import message 

MDS ignores cap update message if migrate_seq mismatch, so when
receiving a cap import message with higher migrate_seq, set mds_want
according to the cap import message.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
This commit is contained in:
Yan, Zheng 2013-02-27 09:26:09 +08:00 committed by Sage Weil
parent d40ee0dcc1
commit 964266cce9
1 changed files with 5 additions and 1 deletions
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6
fs/ceph/caps.c
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@ -553,6 +553,7 @@ retry:
cap->implemented = 0; cap->implemented = 0;
cap->mds = mds; cap->mds = mds;
cap->mds_wanted = 0; cap->mds_wanted = 0;
cap->mseq = 0;
cap->ci = ci; cap->ci = ci;
__insert_cap_node(ci, cap); __insert_cap_node(ci, cap);
@ -628,7 +629,10 @@ retry:
cap->cap_id = cap_id; cap->cap_id = cap_id;
cap->issued = issued; cap->issued = issued;
cap->implemented |= issued; cap->implemented |= issued;
cap->mds_wanted |= wanted; if (mseq > cap->mseq)
cap->mds_wanted = wanted;
else
cap->mds_wanted |= wanted;
cap->seq = seq; cap->seq = seq;
cap->issue_seq = seq; cap->issue_seq = seq;
cap->mseq = mseq; cap->mseq = mseq;