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libceph, rbd: ignore addr->type while comparing in some cases 

ANBZ: #9667

commit 313771e80f upstream.

For libceph, this ensures that libceph instance sharing (share option)
continues to work.  For rbd, this avoids blocklisting alive lock owners
(locker addr is always LEGACY, while watcher addr is ANY in nautilus).

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Stable-dep-of: 588159009d ("rbd: retrieve and check lock owner twice before blocklisting")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Ferry Meng <mengferry@linux.alibaba.com>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Link: https://gitee.com/anolis/cloud-kernel/pulls/3677
This commit is contained in:
Ilya Dryomov 2020-11-25 14:41:59 +01:00 committed by 小龙
parent 96e3d46aa3
commit 573839dec3
3 changed files with 18 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/block/rbd.c
View File

@ -3979,8 +3979,12 @@ static int find_watcher(struct rbd_device *rbd_dev,
sscanf(locker->id.cookie, RBD_LOCK_COOKIE_PREFIX " %llu", &cookie);
for (i = 0; i < num_watchers; i++) {
if (!memcmp(&watchers[i].addr, &locker->info.addr,
sizeof(locker->info.addr)) &&
/*
* Ignore addr->type while comparing. This mimics
* entity_addr_t::get_legacy_str() + strcmp().
*/
if (ceph_addr_equal_no_type(&watchers[i].addr,
&locker->info.addr) &&
watchers[i].cookie == cookie) {
struct rbd_client_id cid = {
.gid = le64_to_cpu(watchers[i].name.num),

9
include/linux/ceph/msgr.h
View File

@ -61,11 +61,18 @@ extern const char *ceph_entity_type_name(int type);
* entity_addr -- network address
*/
struct ceph_entity_addr {
__le32 type;
__le32 type; /* CEPH_ENTITY_ADDR_TYPE_* */
__le32 nonce; /* unique id for process (e.g. pid) */
struct sockaddr_storage in_addr;
} __attribute__ ((packed));
static inline bool ceph_addr_equal_no_type(const struct ceph_entity_addr *lhs,
const struct ceph_entity_addr *rhs)
{
return !memcmp(&lhs->in_addr, &rhs->in_addr, sizeof(lhs->in_addr)) &&
lhs->nonce == rhs->nonce;
}
struct ceph_entity_inst {
struct ceph_entity_name name;
struct ceph_entity_addr addr;

6
net/ceph/mon_client.c
View File

@ -96,9 +96,11 @@ int ceph_monmap_contains(struct ceph_monmap *m, struct ceph_entity_addr *addr)
{
int i;
for (i = 0; i < m->num_mon; i++)
if (memcmp(addr, &m->mon_inst[i].addr, sizeof(*addr)) == 0)
for (i = 0; i < m->num_mon; i++) {
if (ceph_addr_equal_no_type(addr, &m->mon_inst[i].addr))
return 1;
}
return 0;
}