kernfs: s/sysfs/kernfs/ in internal functions and whatever is left

kernfs has just been separated out from sysfs and we're already in
full conflict mode.  Nothing can make the situation any worse.  Let's
take the chance to name things properly.

This patch performs the following renames.

* s/sysfs_*()/kernfs_*()/ in all internal functions
* s/sysfs/kernfs/ in internal strings, comments and whatever is remaining
* Uniformly rename various vfs operations so that they're consistently
  named and distinguishable.

This patch is strictly rename only and doesn't introduce any
functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 61 insertions, 60 deletions

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 32364dd..053cfd9 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -64,7 +64,7 @@ static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos)
 	 * the ops aren't called concurrently for the same open file.
 	 */
 	mutex_lock(&of->mutex);
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return ERR_PTR(-ENODEV);
 
 	ops = kernfs_ops(of->kn);
@@ -104,7 +104,7 @@ static void kernfs_seq_stop(struct seq_file *sf, void *v)
 	if (ops->seq_stop)
 		ops->seq_stop(sf, v);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	mutex_unlock(&of->mutex);
 }
 
@@ -147,7 +147,7 @@ static ssize_t kernfs_file_direct_read(struct kernfs_open_file *of,
 	 * the ops aren't called concurrently for the same open file.
 	 */
 	mutex_lock(&of->mutex);
-	if (!sysfs_get_active(of->kn)) {
+	if (!kernfs_get_active(of->kn)) {
 		len = -ENODEV;
 		mutex_unlock(&of->mutex);
 		goto out_free;
@@ -159,7 +159,7 @@ static ssize_t kernfs_file_direct_read(struct kernfs_open_file *of,
 	else
 		len = -EINVAL;
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	mutex_unlock(&of->mutex);
 
 	if (len < 0)
@@ -178,14 +178,14 @@ static ssize_t kernfs_file_direct_read(struct kernfs_open_file *of,
 }
 
 /**
- * kernfs_file_read - kernfs vfs read callback
+ * kernfs_fop_read - kernfs vfs read callback
  * @file: file pointer
  * @user_buf: data to write
  * @count: number of bytes
  * @ppos: starting offset
  */
-static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
-				size_t count, loff_t *ppos)
+static ssize_t kernfs_fop_read(struct file *file, char __user *user_buf,
+			       size_t count, loff_t *ppos)
 {
 	struct kernfs_open_file *of = kernfs_of(file);
 
@@ -196,7 +196,7 @@ static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
 }
 
 /**
- * kernfs_file_write - kernfs vfs write callback
+ * kernfs_fop_write - kernfs vfs write callback
  * @file: file pointer
  * @user_buf: data to write
  * @count: number of bytes
@@ -211,8 +211,8 @@ static ssize_t kernfs_file_read(struct file *file, char __user *user_buf,
  * modify only the the value you're changing, then write entire buffer
  * back.
  */
-static ssize_t kernfs_file_write(struct file *file, const char __user *user_buf,
-				 size_t count, loff_t *ppos)
+static ssize_t kernfs_fop_write(struct file *file, const char __user *user_buf,
+				size_t count, loff_t *ppos)
 {
 	struct kernfs_open_file *of = kernfs_of(file);
 	ssize_t len = min_t(size_t, count, PAGE_SIZE);
@@ -234,7 +234,7 @@ static ssize_t kernfs_file_write(struct file *file, const char __user *user_buf,
 	 * the ops aren't called concurrently for the same open file.
 	 */
 	mutex_lock(&of->mutex);
-	if (!sysfs_get_active(of->kn)) {
+	if (!kernfs_get_active(of->kn)) {
 		mutex_unlock(&of->mutex);
 		len = -ENODEV;
 		goto out_free;
@@ -246,7 +246,7 @@ static ssize_t kernfs_file_write(struct file *file, const char __user *user_buf,
 	else
 		len = -EINVAL;
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	mutex_unlock(&of->mutex);
 
 	if (len > 0)
@@ -264,13 +264,13 @@ static void kernfs_vma_open(struct vm_area_struct *vma)
 	if (!of->vm_ops)
 		return;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return;
 
 	if (of->vm_ops->open)
 		of->vm_ops->open(vma);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 }
 
 static int kernfs_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
@@ -282,14 +282,14 @@ static int kernfs_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	if (!of->vm_ops)
 		return VM_FAULT_SIGBUS;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return VM_FAULT_SIGBUS;
 
 	ret = VM_FAULT_SIGBUS;
 	if (of->vm_ops->fault)
 		ret = of->vm_ops->fault(vma, vmf);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	return ret;
 }
 
@@ -303,7 +303,7 @@ static int kernfs_vma_page_mkwrite(struct vm_area_struct *vma,
 	if (!of->vm_ops)
 		return VM_FAULT_SIGBUS;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return VM_FAULT_SIGBUS;
 
 	ret = 0;
@@ -312,7 +312,7 @@ static int kernfs_vma_page_mkwrite(struct vm_area_struct *vma,
 	else
 		file_update_time(file);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	return ret;
 }
 
@@ -326,14 +326,14 @@ static int kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr,
 	if (!of->vm_ops)
 		return -EINVAL;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return -EINVAL;
 
 	ret = -EINVAL;
 	if (of->vm_ops->access)
 		ret = of->vm_ops->access(vma, addr, buf, len, write);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	return ret;
 }
 
@@ -348,14 +348,14 @@ static int kernfs_vma_set_policy(struct vm_area_struct *vma,
 	if (!of->vm_ops)
 		return 0;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return -EINVAL;
 
 	ret = 0;
 	if (of->vm_ops->set_policy)
 		ret = of->vm_ops->set_policy(vma, new);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	return ret;
 }
 
@@ -369,14 +369,14 @@ static struct mempolicy *kernfs_vma_get_policy(struct vm_area_struct *vma,
 	if (!of->vm_ops)
 		return vma->vm_policy;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return vma->vm_policy;
 
 	pol = vma->vm_policy;
 	if (of->vm_ops->get_policy)
 		pol = of->vm_ops->get_policy(vma, addr);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	return pol;
 }
 
@@ -391,14 +391,14 @@ static int kernfs_vma_migrate(struct vm_area_struct *vma,
 	if (!of->vm_ops)
 		return 0;
 
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		return 0;
 
 	ret = 0;
 	if (of->vm_ops->migrate)
 		ret = of->vm_ops->migrate(vma, from, to, flags);
 
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 	return ret;
 }
 #endif
@@ -415,7 +415,7 @@ static const struct vm_operations_struct kernfs_vm_ops = {
 #endif
 };
 
-static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma)
+static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	struct kernfs_open_file *of = kernfs_of(file);
 	const struct kernfs_ops *ops;
@@ -434,7 +434,7 @@ static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma)
 	mutex_lock(&of->mutex);
 
 	rc = -ENODEV;
-	if (!sysfs_get_active(of->kn))
+	if (!kernfs_get_active(of->kn))
 		goto out_unlock;
 
 	ops = kernfs_ops(of->kn);
@@ -465,7 +465,7 @@ static int kernfs_file_mmap(struct file *file, struct vm_area_struct *vma)
 	of->vm_ops = vma->vm_ops;
 	vma->vm_ops = &kernfs_vm_ops;
 out_put:
-	sysfs_put_active(of->kn);
+	kernfs_put_active(of->kn);
 out_unlock:
 	mutex_unlock(&of->mutex);
 
@@ -473,7 +473,7 @@ out_unlock:
 }
 
 /**
- *	sysfs_get_open_dirent - get or create kernfs_open_node
+ *	kernfs_get_open_node - get or create kernfs_open_node
  *	@kn: target kernfs_node
  *	@of: kernfs_open_file for this instance of open
  *
@@ -486,8 +486,8 @@ out_unlock:
  *	RETURNS:
  *	0 on success, -errno on failure.
  */
-static int sysfs_get_open_dirent(struct kernfs_node *kn,
-				 struct kernfs_open_file *of)
+static int kernfs_get_open_node(struct kernfs_node *kn,
+				struct kernfs_open_file *of)
 {
 	struct kernfs_open_node *on, *new_on = NULL;
 
@@ -527,7 +527,7 @@ static int sysfs_get_open_dirent(struct kernfs_node *kn,
 }
 
 /**
- *	sysfs_put_open_dirent - put kernfs_open_node
+ *	kernfs_put_open_node - put kernfs_open_node
  *	@kn: target kernfs_nodet
  *	@of: associated kernfs_open_file
  *
@@ -537,8 +537,8 @@ static int sysfs_get_open_dirent(struct kernfs_node *kn,
  *	LOCKING:
  *	None.
  */
-static void sysfs_put_open_dirent(struct kernfs_node *kn,
-				  struct kernfs_open_file *of)
+static void kernfs_put_open_node(struct kernfs_node *kn,
+				 struct kernfs_open_file *of)
 {
 	struct kernfs_open_node *on = kn->attr.open;
 	unsigned long flags;
@@ -560,7 +560,7 @@ static void sysfs_put_open_dirent(struct kernfs_node *kn,
 	kfree(on);
 }
 
-static int kernfs_file_open(struct inode *inode, struct file *file)
+static int kernfs_fop_open(struct inode *inode, struct file *file)
 {
 	struct kernfs_node *kn = file->f_path.dentry->d_fsdata;
 	const struct kernfs_ops *ops;
@@ -568,7 +568,7 @@ static int kernfs_file_open(struct inode *inode, struct file *file)
 	bool has_read, has_write, has_mmap;
 	int error = -EACCES;
 
-	if (!sysfs_get_active(kn))
+	if (!kernfs_get_active(kn))
 		return -ENODEV;
 
 	ops = kernfs_ops(kn);
@@ -633,13 +633,13 @@ static int kernfs_file_open(struct inode *inode, struct file *file)
 	if (file->f_mode & FMODE_WRITE)
 		file->f_mode |= FMODE_PWRITE;
 
-	/* make sure we have open dirent struct */
-	error = sysfs_get_open_dirent(kn, of);
+	/* make sure we have open node struct */
+	error = kernfs_get_open_node(kn, of);
 	if (error)
 		goto err_close;
 
 	/* open succeeded, put active references */
-	sysfs_put_active(kn);
+	kernfs_put_active(kn);
 	return 0;
 
 err_close:
@@ -647,23 +647,23 @@ err_close:
 err_free:
 	kfree(of);
 err_out:
-	sysfs_put_active(kn);
+	kernfs_put_active(kn);
 	return error;
 }
 
-static int kernfs_file_release(struct inode *inode, struct file *filp)
+static int kernfs_fop_release(struct inode *inode, struct file *filp)
 {
 	struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
 	struct kernfs_open_file *of = kernfs_of(filp);
 
-	sysfs_put_open_dirent(kn, of);
+	kernfs_put_open_node(kn, of);
 	seq_release(inode, filp);
 	kfree(of);
 
 	return 0;
 }
 
-void sysfs_unmap_bin_file(struct kernfs_node *kn)
+void kernfs_unmap_bin_file(struct kernfs_node *kn)
 {
 	struct kernfs_open_node *on;
 	struct kernfs_open_file *of;
@@ -686,10 +686,11 @@ void sysfs_unmap_bin_file(struct kernfs_node *kn)
 	}
 	mutex_unlock(&kernfs_open_file_mutex);
 
-	sysfs_put_open_dirent(kn, NULL);
+	kernfs_put_open_node(kn, NULL);
 }
 
-/* Sysfs attribute files are pollable.  The idea is that you read
+/*
+ * Kernfs attribute files are pollable.  The idea is that you read
  * the content and then you use 'poll' or 'select' to wait for
  * the content to change.  When the content changes (assuming the
  * manager for the kobject supports notification), poll will
@@ -702,19 +703,19 @@ void sysfs_unmap_bin_file(struct kernfs_node *kn)
  * to see if it supports poll (Neither 'poll' nor 'select' return
  * an appropriate error code).  When in doubt, set a suitable timeout value.
  */
-static unsigned int kernfs_file_poll(struct file *filp, poll_table *wait)
+static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait)
 {
 	struct kernfs_open_file *of = kernfs_of(filp);
 	struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
 	struct kernfs_open_node *on = kn->attr.open;
 
 	/* need parent for the kobj, grab both */
-	if (!sysfs_get_active(kn))
+	if (!kernfs_get_active(kn))
 		goto trigger;
 
 	poll_wait(filp, &on->poll, wait);
 
-	sysfs_put_active(kn);
+	kernfs_put_active(kn);
 
 	if (of->event != atomic_read(&on->event))
 		goto trigger;
@@ -751,13 +752,13 @@ void kernfs_notify(struct kernfs_node *kn)
 EXPORT_SYMBOL_GPL(kernfs_notify);
 
 const struct file_operations kernfs_file_fops = {
-	.read		= kernfs_file_read,
-	.write		= kernfs_file_write,
+	.read		= kernfs_fop_read,
+	.write		= kernfs_fop_write,
 	.llseek		= generic_file_llseek,
-	.mmap		= kernfs_file_mmap,
-	.open		= kernfs_file_open,
-	.release	= kernfs_file_release,
-	.poll		= kernfs_file_poll,
+	.mmap		= kernfs_fop_mmap,
+	.open		= kernfs_fop_open,
+	.release	= kernfs_fop_release,
+	.poll		= kernfs_fop_poll,
 };
 
 /**
@@ -784,8 +785,8 @@ struct kernfs_node *kernfs_create_file_ns_key(struct kernfs_node *parent,
 	struct kernfs_node *kn;
 	int rc;
 
-	kn = sysfs_new_dirent(kernfs_root(parent), name,
-			      (mode & S_IALLUGO) | S_IFREG, KERNFS_FILE);
+	kn = kernfs_new_node(kernfs_root(parent), name,
+			     (mode & S_IALLUGO) | S_IFREG, KERNFS_FILE);
 	if (!kn)
 		return ERR_PTR(-ENOMEM);
 
@@ -811,9 +812,9 @@ struct kernfs_node *kernfs_create_file_ns_key(struct kernfs_node *parent,
 	if (ops->mmap)
 		kn->flags |= KERNFS_HAS_MMAP;
 
-	sysfs_addrm_start(&acxt);
-	rc = sysfs_add_one(&acxt, kn, parent);
-	sysfs_addrm_finish(&acxt);
+	kernfs_addrm_start(&acxt);
+	rc = kernfs_add_one(&acxt, kn, parent);
+	kernfs_addrm_finish(&acxt);
 
 	if (rc) {
 		kernfs_put(kn);