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vfs: Convert aio to use the new mount API 

Convert the aio 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: Benjamin LaHaise <bcrl@kvack.org>
cc: linux-aio@kvack.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells 2019-03-25 16:38:23 +00:00 committed by Al Viro
parent 31d6d5ce53
commit 52db59df17
1 changed files with 7 additions and 8 deletions
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15
fs/aio.c
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@ -42,6 +42,7 @@
#include <linux/ramfs.h>
#include <linux/percpu-refcount.h>
#include <linux/mount.h>
#include <linux/pseudo_fs.h>
#include <asm/kmap_types.h>
#include <linux/uaccess.h>
@ -249,14 +250,12 @@ static struct file *aio_private_file(struct kioctx *ctx, loff_t nr_pages)
return file;
}
static struct dentry *aio_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
static int aio_init_fs_context(struct fs_context *fc)
{
struct dentry *root = mount_pseudo(fs_type, NULL, NULL, AIO_RING_MAGIC);
if (!IS_ERR(root))
root->d_sb->s_iflags |= SB_I_NOEXEC;
return root;
if (!init_pseudo(fc, AIO_RING_MAGIC))
return -ENOMEM;
fc->s_iflags |= SB_I_NOEXEC;
return 0;
}
/* aio_setup
@ -267,7 +266,7 @@ static int __init aio_setup(void)
{
static struct file_system_type aio_fs = {
.name = "aio",
.mount = aio_mount,
.init_fs_context = aio_init_fs_context,
.kill_sb = kill_anon_super,
};
aio_mnt = kern_mount(&aio_fs);