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authorYan, Zheng <zheng.z.yan@intel.com>2014-07-30 10:12:47 +0800
committerIlya Dryomov <ilya.dryomov@inktank.com>2014-08-07 14:30:00 +0400
commit282c105225ec3229f344c5fced795b9e1e634440 (patch)
tree6559e9991952537b75371f49f8ac17b65c41d6e2 /fs/ceph
parent06fee30f6a31f106bed5d24d21eb8f1c4d8ba1fc (diff)
downloadlinux-282c105225ec3229f344c5fced795b9e1e634440.tar.bz2
ceph: fix kick_requests()
__do_request() may unregister the request. So we should update iterator 'p' before calling __do_request() Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/mds_client.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index fd8d7ca80e75..bad07c09f91e 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2067,11 +2067,12 @@ static void __wake_requests(struct ceph_mds_client *mdsc,
static void kick_requests(struct ceph_mds_client *mdsc, int mds)
{
struct ceph_mds_request *req;
- struct rb_node *p;
+ struct rb_node *p = rb_first(&mdsc->request_tree);
dout("kick_requests mds%d\n", mds);
- for (p = rb_first(&mdsc->request_tree); p; p = rb_next(p)) {
+ while (p) {
req = rb_entry(p, struct ceph_mds_request, r_node);
+ p = rb_next(p);
if (req->r_got_unsafe)
continue;
if (req->r_session &&