[PATCH v3 24/38] nfsd: make nfsd4_callback_ops->prepare operation bool return
STALE374d
From: Jeff Layton <jlayton@kernel.org>
Date: 2025-09-24 18:07:38
Also in:
linux-cifs, linux-doc, linux-fsdevel, linux-nfs, linux-unionfs, linux-xfs, lkml, netfs
Subsystem:
filesystems (vfs and infrastructure), kernel nfsd, sunrpc, and lockd servers, the rest · Maintainers:
Alexander Viro, Christian Brauner, Chuck Lever, Jeff Layton, Linus Torvalds
For a CB_NOTIFY operation, we need to stop processing the callback if an allocation fails. Change the ->prepare callback operation to return true if processing should continue, and false otherwise. Signed-off-by: Jeff Layton <jlayton@kernel.org> --- fs/nfsd/nfs4callback.c | 5 ++++- fs/nfsd/nfs4layouts.c | 3 ++- fs/nfsd/nfs4state.c | 6 ++++-- fs/nfsd/state.h | 6 +++--- 4 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index e00b2aea8da2b93f366d88888f404734953f1942..d13a4819d764269338f2b05a05f975c037e589af 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c@@ -1739,7 +1739,10 @@ nfsd4_run_cb_work(struct work_struct *work) if (!test_and_clear_bit(NFSD4_CALLBACK_REQUEUE, &cb->cb_flags)) { if (cb->cb_ops && cb->cb_ops->prepare) - cb->cb_ops->prepare(cb); + if (!cb->cb_ops->prepare(cb)) { + nfsd41_destroy_cb(cb); + return; + } } cb->cb_msg.rpc_cred = clp->cl_cb_cred;
diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c
index 683bd1130afe298f9df774684192c89f68102b72..1916e5541153126edc357cfeeff9ce30461b69c0 100644
--- a/fs/nfsd/nfs4layouts.c
+++ b/fs/nfsd/nfs4layouts.c@@ -652,7 +652,7 @@ nfsd4_cb_layout_fail(struct nfs4_layout_stateid *ls, struct nfsd_file *file) } } -static void +static bool nfsd4_cb_layout_prepare(struct nfsd4_callback *cb) { struct nfs4_layout_stateid *ls =
@@ -661,6 +661,7 @@ nfsd4_cb_layout_prepare(struct nfsd4_callback *cb) mutex_lock(&ls->ls_mutex); nfs4_inc_and_copy_stateid(&ls->ls_recall_sid, &ls->ls_stid); mutex_unlock(&ls->ls_mutex); + return true; } static int
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index eac9e9360e568caf1f615d230cff39e022107f12..517ba5595da3be5e130e1978ba30235496efbe01 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c@@ -361,12 +361,13 @@ remove_blocked_locks(struct nfs4_lockowner *lo) } } -static void +static bool nfsd4_cb_notify_lock_prepare(struct nfsd4_callback *cb) { struct nfsd4_blocked_lock *nbl = container_of(cb, struct nfsd4_blocked_lock, nbl_cb); locks_delete_block(&nbl->nbl_lock); + return true; } static int
@@ -5450,7 +5451,7 @@ bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, struct inode *inode) return timeo > 0; } -static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) +static bool nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) { struct nfs4_delegation *dp = cb_to_delegation(cb); struct nfsd_net *nn = net_generic(dp->dl_stid.sc_client->net,
@@ -5471,6 +5472,7 @@ static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) list_add_tail(&dp->dl_recall_lru, &nn->del_recall_lru); } spin_unlock(&state_lock); + return true; } static int nfsd4_cb_recall_done(struct nfsd4_callback *cb,
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index b052c1effdc5356487c610db9728df8ecfe851d4..bacb9f9eff3aaf7076d53f06826026569a567bd9 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h@@ -98,9 +98,9 @@ struct nfsd4_callback { }; struct nfsd4_callback_ops { - void (*prepare)(struct nfsd4_callback *); - int (*done)(struct nfsd4_callback *, struct rpc_task *); - void (*release)(struct nfsd4_callback *); + bool (*prepare)(struct nfsd4_callback *cb); + int (*done)(struct nfsd4_callback *cb, struct rpc_task *task); + void (*release)(struct nfsd4_callback *cb); uint32_t opcode; };
--
2.51.0