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vfs: Convert aio to use the new mount API

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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/ramfs.h>
#include <linux/percpu-refcount.h> #include <linux/percpu-refcount.h>
#include <linux/mount.h> #include <linux/mount.h>
#include <linux/pseudo_fs.h>
#include <asm/kmap_types.h> #include <asm/kmap_types.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
@@ -249,14 +250,12 @@ static struct file *aio_private_file(struct kioctx *ctx, loff_t nr_pages)
return file; return file;
} }
static struct dentry *aio_mount(struct file_system_type *fs_type, static int aio_init_fs_context(struct fs_context *fc)
int flags, const char *dev_name, void *data)
{ {
struct dentry *root = mount_pseudo(fs_type, NULL, NULL, AIO_RING_MAGIC); if (!init_pseudo(fc, AIO_RING_MAGIC))
return -ENOMEM;
if (!IS_ERR(root)) fc->s_iflags |= SB_I_NOEXEC;
root->d_sb->s_iflags |= SB_I_NOEXEC; return 0;
return root;
} }
/* aio_setup /* aio_setup
@@ -267,7 +266,7 @@ static int __init aio_setup(void)
{ {
static struct file_system_type aio_fs = { static struct file_system_type aio_fs = {
.name = "aio", .name = "aio",
.mount = aio_mount, .init_fs_context = aio_init_fs_context,
.kill_sb = kill_anon_super, .kill_sb = kill_anon_super,
}; };
aio_mnt = kern_mount(&aio_fs); aio_mnt = kern_mount(&aio_fs);