v2: Fix bad using of struct file_lock_operations for handle the owner.
Signed-off-by: Kinglong Mee <kinglongmee@xxxxxxxxx>
---
fs/nfsd/nfs4state.c | 32 ++++++++++++++++++++++++++++++--
1 file changed, 30 insertions(+), 2 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2e80a59..24a8d91 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4867,9 +4867,33 @@ nfs4_transform_lock_offset(struct file_lock *lock)
lock->fl_end = OFFSET_MAX;
}
+static inline struct nfs4_lockowner *get_lockowner(struct nfs4_lockowner *lo)
+{
+ atomic_inc(&lo->lo_owner.so_count);
+ return lo;
+}
+
+static void nfsd4_fl_copy_owner(struct file_lock *dst, struct file_lock *src)
+{
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *) src->fl_owner;
+ dst->fl_owner = (fl_owner_t) get_lockowner(lo);
+}
+
+static void nfsd4_fl_release_owner(struct file_lock *fl)
+{
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *) fl->fl_owner;
+
+ if (lo) {
+ nfs4_put_stateowner(&lo->lo_owner);
+ fl->fl_owner = NULL;
+ }
+}
+
/* Hack!: For now, we're defining this just so we can use a pointer to it
* as a unique cookie to identify our (NFSv4's) posix locks. */
static const struct lock_manager_operations nfsd_posix_mng_ops = {
+ .lm_copy_owner = nfsd4_fl_copy_owner,
+ .lm_release_owner = nfsd4_fl_release_owner,
};
static inline void
@@ -5238,7 +5262,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_openmode;
goto out;
}
- file_lock->fl_owner = (fl_owner_t)lock_sop;
+
+ file_lock->fl_owner = (fl_owner_t)get_lockowner(lock_sop);
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
@@ -5405,6 +5430,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfs4_ol_stateid *stp;
struct file *filp = NULL;
struct file_lock *file_lock = NULL;
+ struct nfs4_lockowner *lock_sop = NULL;
__be32 status;
int err;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
@@ -5426,6 +5452,8 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_lock_range;
goto put_stateid;
}
+
+ lock_sop = lockowner(stp->st_stateowner);
file_lock = locks_alloc_lock();
if (!file_lock) {
dprintk("NFSD: %s: unable to allocate lock!\n", __func__);
@@ -5434,7 +5462,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
}
locks_init_lock(file_lock);
file_lock->fl_type = F_UNLCK;
- file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
+ file_lock->fl_owner = (fl_owner_t)get_lockowner(lock_sop);
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
