lockref: remove count argument of lockref_init

All users of lockref_init() now initialize the count to 1, so hardcode
that and remove the count argument.

Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Andreas Gruenbacher <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: Andreas Gruenbacher

fs/dcache.c

@@ -1700,7 +1700,7 @@ static struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
 	smp_store_release(&dentry->d_name.name, dname); /* ^^^ */
 
 	dentry->d_flags = 0;
-	lockref_init(&dentry->d_lockref, 1);
+	lockref_init(&dentry->d_lockref);
 	seqcount_spinlock_init(&dentry->d_seq, &dentry->d_lock);
 	dentry->d_inode = NULL;
 	dentry->d_parent = dentry;

fs/erofs/zdata.c

@@ -726,7 +726,7 @@ static int z_erofs_register_pcluster(struct z_erofs_frontend *fe)
 	if (IS_ERR(pcl))
 		return PTR_ERR(pcl);
 
-	lockref_init(&pcl->lockref, 1); /* one ref for this request */
+	lockref_init(&pcl->lockref); /* one ref for this request */
 	pcl->algorithmformat = map->m_algorithmformat;
 	pcl->length = 0;
 	pcl->partial = true;

fs/gfs2/glock.c

@@ -1201,7 +1201,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
 	if (glops->go_instantiate)
 		gl->gl_flags |= BIT(GLF_INSTANTIATE_NEEDED);
 	gl->gl_name = name;
-	lockref_init(&gl->gl_lockref, 1);
+	lockref_init(&gl->gl_lockref);
 	lockdep_set_subclass(&gl->gl_lockref.lock, glops->go_subclass);
 	gl->gl_state = LM_ST_UNLOCKED;
 	gl->gl_target = LM_ST_UNLOCKED;

fs/gfs2/quota.c

@@ -236,7 +236,7 @@ static struct gfs2_quota_data *qd_alloc(unsigned hash, struct gfs2_sbd *sdp, str
 		return NULL;
 
 	qd->qd_sbd = sdp;
-	lockref_init(&qd->qd_lockref, 1);
+	lockref_init(&qd->qd_lockref);
 	qd->qd_id = qid;
 	qd->qd_slot = -1;
 	INIT_LIST_HEAD(&qd->qd_lru);

include/linux/lockref.h

@@ -37,12 +37,13 @@ struct lockref {
 /**
  * lockref_init - Initialize a lockref
  * @lockref: pointer to lockref structure
- * @count: initial count
+ *
+ * Initializes @lockref->count to 1.
  */
-static inline void lockref_init(struct lockref *lockref, unsigned int count)
+static inline void lockref_init(struct lockref *lockref)
 {
 	spin_lock_init(&lockref->lock);
-	lockref->count = count;
+	lockref->count = 1;
 }
 
 void lockref_get(struct lockref *lockref);