summaryrefslogtreecommitdiffstats
path: root/xlators
diff options
context:
space:
mode:
authorPranith Kumar K <pkarampu@redhat.com>2013-05-22 14:40:22 +0530
committerVijay Bellur <vbellur@redhat.com>2013-06-06 11:53:39 -0700
commitb7ac8e415961c9e203ed3f56b4115b7eb215ab94 (patch)
treedb71b2c7bfedb31f8762cd63dd1c63f7c04effa0 /xlators
parentfbdbe06a1df2f983f2ec7a3103db932f40653650 (diff)
cluster/afr: Avoid order mismatch in blocking entrylks
Problem: When taking blocking entrylks, afr orders the entrylks based on uuid_compare of gfids of parent dirs, if they are equal then it orders them based on the basenames. While this approach works fine, the implementation assumes loc->gfids to be populated at the time of the comparison, but loc may have gfid in loc->inode->gfid instead of loc->gfid which was leading to order mismatches and dead-locks. Fix: Implemented loc_gfid which gives gfid by checking both loc->gfid, loc->inode->gfid. Used this for ordering the blocking entrylks. Change-Id: I2743fcaff3d670fbeb6b8e0a496f106a3585dde1 BUG: 965987 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/5063 Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators')
-rw-r--r--xlators/cluster/afr/src/afr-lk-common.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c
index e091a7939fe..812609819f5 100644
--- a/xlators/cluster/afr/src/afr-lk-common.c
+++ b/xlators/cluster/afr/src/afr-lk-common.c
@@ -57,11 +57,15 @@
int
afr_entry_lockee_cmp (const void *l1, const void *l2)
{
- const afr_entry_lockee_t *r1 = l1;
- const afr_entry_lockee_t *r2 = l2;
- int ret = 0;
-
- ret = uuid_compare (r1->loc.gfid, r2->loc.gfid);
+ const afr_entry_lockee_t *r1 = l1;
+ const afr_entry_lockee_t *r2 = l2;
+ int ret = 0;
+ uuid_t gfid1 = {0};
+ uuid_t gfid2 = {0};
+
+ loc_gfid ((loc_t*)&r1->loc, gfid1);
+ loc_gfid ((loc_t*)&r2->loc, gfid2);
+ ret = uuid_compare (gfid1, gfid2);
/*Entrylks with NULL basename are the 'smallest'*/
if (ret == 0) {
if (!r1->basename)
@@ -75,7 +79,6 @@ afr_entry_lockee_cmp (const void *l1, const void *l2)
return -1;
else
return 1;
-
}
int afr_lock_blocking (call_frame_t *frame, xlator_t *this, int child_index);