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authorDavid Howells <dhowells@redhat.com>2019-03-25 16:38:31 +0000
committerAl Viro <viro@zeniv.linux.org.uk>2019-09-12 21:05:34 -0400
commitf32356261d44d580649a7abce1156d15d49cf20f (patch)
tree140effa4ef1e1ff107ec8028d7c55862191264e6 /drivers/base
parent626c3920aeb4575f53c96b0d4ad4e651a21cbb66 (diff)
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vfs: Convert ramfs, shmem, tmpfs, devtmpfs, rootfs to use the new mount API
Convert the ramfs, shmem, tmpfs, devtmpfs and rootfs filesystems 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. Note that tmpfs is slightly tricky as it can contain embedded commas, so it can't be trivially split up using strsep() to break on commas in generic_parse_monolithic(). Instead, tmpfs has to supply its own generic parser. However, if tmpfs changes, then devtmpfs and rootfs, which are wrappers around tmpfs or ramfs, must change too - and thus so must ramfs, so these had to be converted also. [AV: rewritten] Signed-off-by: David Howells <dhowells@redhat.com> cc: Hugh Dickins <hughd@google.com> cc: linux-mm@kvack.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/devtmpfs.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index dabf5006a254..30d0523014e0 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -67,19 +67,15 @@ static struct dentry *public_dev_mount(struct file_system_type *fs_type, int fla
return dget(s->s_root);
}
-static struct dentry *dev_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data)
-{
+static struct file_system_type internal_fs_type = {
+ .name = "devtmpfs",
#ifdef CONFIG_TMPFS
- return shmem_mount(fs_type, flags, dev_name, data);
+ .init_fs_context = shmem_init_fs_context,
+ .parameters = &shmem_fs_parameters,
#else
- return ramfs_mount(fs_type, flags, dev_name, data);
+ .init_fs_context = ramfs_init_fs_context,
+ .parameters = &ramfs_fs_parameters,
#endif
-}
-
-static struct file_system_type internal_fs_type = {
- .name = "devtmpfs",
- .mount = dev_mount,
.kill_sb = kill_litter_super,
};