[PATCH 09/19] staging/lustre/osc: LBUG in osc_lru_reclaim
green at linuxhacker.ru
green at linuxhacker.ru
Mon Sep 14 22:41:25 UTC 2015
From: Hiroya Nozaki <nozaki.hiroya at jp.fujitsu.com>
LASSERT touches cl_client_cache->ccc_lru without any protection.
So this patch the LASSERT moves to the section protected by
cl_client_cache->ccc_lru_lock
Signed-off-by: Hiroya Nozaki <nozaki.hiroya at jp.fujitsu.com>
Reviewed-on: http://review.whamcloud.com/14901
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6624
Reviewed-by: Andreas Dilger <andreas.dilger at intel.com>
Reviewed-by: James Simmons <uja.ornl at yahoo.com>
Signed-off-by: Oleg Drokin <oleg.drokin at intel.com>
---
drivers/staging/lustre/lustre/osc/osc_page.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/lustre/lustre/osc/osc_page.c b/drivers/staging/lustre/lustre/osc/osc_page.c
index 856d859..2af3232 100644
--- a/drivers/staging/lustre/lustre/osc/osc_page.c
+++ b/drivers/staging/lustre/lustre/osc/osc_page.c
@@ -818,7 +818,6 @@ static int osc_lru_reclaim(struct client_obd *cli)
int rc;
LASSERT(cache != NULL);
- LASSERT(!list_empty(&cache->ccc_lru));
rc = osc_lru_shrink(cli, lru_shrink_min);
if (rc != 0) {
@@ -835,6 +834,8 @@ static int osc_lru_reclaim(struct client_obd *cli)
/* Reclaim LRU slots from other client_obd as it can't free enough
* from its own. This should rarely happen. */
spin_lock(&cache->ccc_lru_lock);
+ LASSERT(!list_empty(&cache->ccc_lru));
+
cache->ccc_lru_shrinkers++;
list_move_tail(&cli->cl_lru_osc, &cache->ccc_lru);
--
2.1.0
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