From: tianzy <tianzy>
Date: Wed, 21 Jan 2009 02:56:54 +0000 (+0000)
Subject: Branch b1_6
X-Git-Tag: GIT_EPOCH_B1_6~2^5~238
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=aaea155cfbf114e14d6ad7896711212f94bf028a;p=fs%2Flustre-release.git

Branch b1_6
take refcount of export when quotacheck is going on
b=18126
i=shadow
i=panda
---

diff --git a/lustre/quota/quota_check.c b/lustre/quota/quota_check.c
index 5fbd4a7..5ad5dea 100644
--- a/lustre/quota/quota_check.c
+++ b/lustre/quota/quota_check.c
@@ -111,6 +111,7 @@ static int target_quotacheck_thread(void *data)
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 
         rc = target_quotacheck_callback(exp, oqctl);
+        class_export_put(exp);
 
         atomic_inc(qta->qta_sem);
 
@@ -151,6 +152,9 @@ int target_quota_check(struct obd_export *exp, struct obd_quotactl *oqctl)
                 }
         }
 
+        /* we get ref for exp because target_quotacheck_callback() will use this
+         * export later b=18126 */
+        class_export_get(exp);
         rc = kernel_thread(target_quotacheck_thread, qta, CLONE_VM|CLONE_FILES);
         if (rc >= 0) {
                 CDEBUG(D_INFO, "%s: target_quotacheck_thread: %d\n",
@@ -158,6 +162,7 @@ int target_quota_check(struct obd_export *exp, struct obd_quotactl *oqctl)
                 RETURN(0);
         }
 
+        class_export_put(exp);
         CERROR("%s: error starting quotacheck_thread: %d\n",
                obd->obd_name, rc);
         OBD_FREE_PTR(qta);