6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
[ Upstream commit b6e9a44e99603fe10e1d78901fdd97681a539612 ]
If existing lease state and request state are same, don't increment
epoch in create context.
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/server/oplock.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -105,7 +105,7 @@ static int alloc_lease(struct oplock_inf
lease->is_dir = lctx->is_dir;
memcpy(lease->parent_lease_key, lctx->parent_lease_key, SMB2_LEASE_KEY_SIZE);
lease->version = lctx->version;
- lease->epoch = le16_to_cpu(lctx->epoch);
+ lease->epoch = le16_to_cpu(lctx->epoch) + 1;
INIT_LIST_HEAD(&opinfo->lease_entry);
opinfo->o_lease = lease;
@@ -541,6 +541,9 @@ static struct oplock_info *same_client_h
continue;
}
+ if (lctx->req_state != lease->state)
+ lease->epoch++;
+
/* upgrading lease */
if ((atomic_read(&ci->op_count) +
atomic_read(&ci->sop_count)) == 1) {
@@ -1035,7 +1038,7 @@ static void copy_lease(struct oplock_inf
SMB2_LEASE_KEY_SIZE);
lease2->duration = lease1->duration;
lease2->flags = lease1->flags;
- lease2->epoch = lease1->epoch++;
+ lease2->epoch = lease1->epoch;
lease2->version = lease1->version;
}
@@ -1454,7 +1457,7 @@ void create_lease_buf(u8 *rbuf, struct l
memcpy(buf->lcontext.LeaseKey, lease->lease_key,
SMB2_LEASE_KEY_SIZE);
buf->lcontext.LeaseFlags = lease->flags;
- buf->lcontext.Epoch = cpu_to_le16(++lease->epoch);
+ buf->lcontext.Epoch = cpu_to_le16(lease->epoch);
buf->lcontext.LeaseState = lease->state;
memcpy(buf->lcontext.ParentLeaseKey, lease->parent_lease_key,
SMB2_LEASE_KEY_SIZE);
