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ocfs2/dlm: Handle EAGAIN for compatibility - v2

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Mainline commit aad1b15310 made the
dlm_begin_reco_handler() return -EAGAIN instead of EAGAIN.

As this error is transmitted over the wire, we want the receiver,
dlm_send_begin_reco_message(), to understand both the older EAGAIN and
the newer -EAGAIN, to allow rolling upgrade of the cluster nodes.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Sunil Mushran 2010-01-25 17:58:30 -08:00 committed by Joel Becker
parent 60c486744c
commit cd34edd8cf
1 changed files with 7 additions and 1 deletions
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8
fs/ocfs2/dlm/dlmrecovery.c
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@ -2639,7 +2639,13 @@ retry:
"begin reco msg (%d)\n", dlm->name, nodenum, ret);
ret = 0;
}
if (ret == -EAGAIN) {
/*
* Prior to commit aad1b15310b9bcd59fa81ab8f2b1513b59553ea8,
* dlm_begin_reco_handler() returned EAGAIN and not -EAGAIN.
* We are handling both for compatibility reasons.
*/
if (ret == -EAGAIN || ret == EAGAIN) {
mlog(0, "%s: trying to start recovery of node "
"%u, but node %u is waiting for last recovery "
"to complete, backoff for a bit\n", dlm->name,