vfs: Convert virtio_balloon to use the new mount API (99558d20) · Commits · 戴 / test

Convert the virtio_balloon filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. Signed-off-by:

David Howells <dhowells@redhat.com> cc: "Michael S. Tsirkin" <mst@redhat.com> cc: Jason Wang <jasowang@redhat.com> cc: virtualization@lists.linux-foundation.org Signed-off-by:

Al Viro <viro@zeniv.linux.org.uk>

drivers/virtio/virtio_balloon.c

+4 −4

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@
		#include <linux/mm.h>
		#include <linux/mount.h>
		#include <linux/magic.h>
		#include <linux/pseudo_fs.h>

		/*
		* Balloon device works in 4K page units. So each page is pointed to by
		@@ -758,15 +759,14 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info,
		return MIGRATEPAGE_SUCCESS;
		}

		static struct dentry balloon_mount(struct file_system_type fs_type,
		int flags, const char dev_name, void data)
		static int balloon_init_fs_context(struct fs_context *fc)
		{
		return mount_pseudo(fs_type, NULL, NULL, BALLOON_KVM_MAGIC);
		return init_pseudo(fc, BALLOON_KVM_MAGIC) ? 0 : -ENOMEM;
		}

		static struct file_system_type balloon_fs = {
		.name = "balloon-kvm",
		.mount = balloon_mount,
		.init_fs_context = balloon_init_fs_context,
		.kill_sb = kill_anon_super,
		};

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