summaryrefslogtreecommitdiffstats
path: root/libglusterfs/src/graph.c
diff options
context:
space:
mode:
authorPoornima G <pgurusid@redhat.com>2017-02-15 11:18:31 +0530
committerPranith Kumar Karampuri <pkarampu@redhat.com>2017-02-19 22:26:09 -0500
commit4badd7334d345b1c27f528140e4c28afaf1f32f6 (patch)
tree9f61edec8e0b915972743e94c52537b7d4b0fa8c /libglusterfs/src/graph.c
parente30af139739e3a6e587d77a9af999035fe20dc37 (diff)
libglusterfs: Fix a crash due to race between inode_ctx_set and inode_ref
Issue: Currently inode ref count is gaurded by inode_table->lock, and inode_ctx is gauarded by inode->lock. With the new patch [1] inode_ref was modified to change the inode_ctx to track the ref count per xlator. Thus inode_ref performed under inode_table->lock is modifying inode_ctx which has to be modified only under inode->lock Solution: When a inode is created, inode_ctx holder is allocated for all the xlators. Hence in case of inode_ctx_set instead of using the first free index in inode ctx holder, we can have predecided index for every xlator in the graph. Credits Pranith K <pkarampu@redhat.com> [1] http://review.gluster.org/13736 Change-Id: I1bfe111c211fcc4fcd761bba01dc87c4c69b5170 BUG: 1423373 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/16622 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Diffstat (limited to 'libglusterfs/src/graph.c')
-rw-r--r--libglusterfs/src/graph.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libglusterfs/src/graph.c b/libglusterfs/src/graph.c
index 47f473a580f..0c7d6cf6101 100644
--- a/libglusterfs/src/graph.c
+++ b/libglusterfs/src/graph.c
@@ -111,6 +111,7 @@ glusterfs_graph_set_first (glusterfs_graph_t *graph, xlator_t *xl)
graph->first = xl;
graph->xl_count++;
+ xl->xl_id = graph->xl_count;
}