[lustre-devel] [PATCH 24/29] staging: lustre: ptlrpc: Forbid too early NRS policy tunings
James Simmons
jsimmons at infradead.org
Thu Oct 27 15:11:58 PDT 2016
From: Henri Doreau <henri.doreau at cea.fr>
Wait for a NRS policy to be fully started before allowing
to apply related tunings, so that all fields are properly
initialized.
Signed-off-by: Henri Doreau <henri.doreau at cea.fr>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6673
Reviewed-on: http://review.whamcloud.com/15104
Reviewed-by: Emoly Liu <emoly.liu at intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger at intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin at intel.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
drivers/staging/lustre/lustre/ptlrpc/nrs.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/lustre/lustre/ptlrpc/nrs.c b/drivers/staging/lustre/lustre/ptlrpc/nrs.c
index d88faf6..f856632 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/nrs.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/nrs.c
@@ -619,6 +619,15 @@ static int nrs_policy_ctl(struct ptlrpc_nrs *nrs, char *name,
goto out;
}
+ /**
+ * Wait for the policy to be fully started before attempting
+ * to operate it.
+ */
+ if (policy->pol_state == NRS_POL_STATE_STARTING) {
+ rc = -EAGAIN;
+ goto out;
+ }
+
switch (opc) {
/**
* Unknown opcode, pass it down to the policy-specific control
--
1.7.1
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