summaryrefslogtreecommitdiff
path: root/fs/nfs
diff options
context:
space:
mode:
authorBenjamin Coddington <bcodding@redhat.com>2022-10-19 19:09:18 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2022-10-27 22:52:10 +0300
commitf5ea16137a3fa2858620dc9084466491c128535f (patch)
tree370281a73440a4f3c50daa885abf2b4a397a8f00 /fs/nfs
parentcbdeaee94a415800c65a8c3fa04d9664a8b8fb3a (diff)
downloadlinux-f5ea16137a3fa2858620dc9084466491c128535f.tar.xz
NFSv4: Retry LOCK on OLD_STATEID during delegation return
There's a small window where a LOCK sent during a delegation return can race with another OPEN on client, but the open stateid has not yet been updated. In this case, the client doesn't handle the OLD_STATEID error from the server and will lose this lock, emitting: "NFS: nfs4_handle_delegation_recall_error: unhandled error -10024". Fix this by sending the task through the nfs4 error handling in nfs4_lock_done() when we may have to reconcile our stateid with what the server believes it to be. For this case, the result is a retry of the LOCK operation with the updated stateid. Reported-by: Gonzalo Siero Humet <gsierohu@redhat.com> Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4proc.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 4c4df7f213b6..86ed5c0142c3 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7138,6 +7138,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
{
struct nfs4_lockdata *data = calldata;
struct nfs4_lock_state *lsp = data->lsp;
+ struct nfs_server *server = NFS_SERVER(d_inode(data->ctx->dentry));
if (!nfs4_sequence_done(task, &data->res.seq_res))
return;
@@ -7145,8 +7146,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
data->rpc_status = task->tk_status;
switch (task->tk_status) {
case 0:
- renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)),
- data->timestamp);
+ renew_lease(server, data->timestamp);
if (data->arg.new_lock && !data->cancelled) {
data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS);
if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0)
@@ -7167,6 +7167,8 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
if (!nfs4_stateid_match(&data->arg.open_stateid,
&lsp->ls_state->open_stateid))
goto out_restart;
+ else if (nfs4_async_handle_error(task, server, lsp->ls_state, NULL) == -EAGAIN)
+ goto out_restart;
} else if (!nfs4_stateid_match(&data->arg.lock_stateid,
&lsp->ls_stateid))
goto out_restart;