From 4799974555de565df0d0aca86c15bbea70105a19 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 25 Mar 2019 16:38:29 +0000 Subject: [PATCH] vfs: Convert efivarfs to use the new mount API Convert the efivarfs 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. [AV: get rid of efivarfs_sb nonsense - it has never been used] See Documentation/filesystems/mount_api.txt for more information. Signed-off-by: David Howells cc: Matthew Garrett cc: Jeremy Kerr cc: Ard Biesheuvel cc: linux-efi@vger.kernel.org Signed-off-by: Al Viro --- fs/efivarfs/super.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c index 5b68e4294faa..124f1aa9ab03 100644 --- a/fs/efivarfs/super.c +++ b/fs/efivarfs/super.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -31,8 +32,6 @@ static const struct super_operations efivarfs_ops = { .evict_inode = efivarfs_evict_inode, }; -static struct super_block *efivarfs_sb; - /* * Compare two efivarfs file names. * @@ -191,14 +190,12 @@ static int efivarfs_destroy(struct efivar_entry *entry, void *data) return 0; } -static int efivarfs_fill_super(struct super_block *sb, void *data, int silent) +static int efivarfs_fill_super(struct super_block *sb, struct fs_context *fc) { struct inode *inode = NULL; struct dentry *root; int err; - efivarfs_sb = sb; - sb->s_maxbytes = MAX_LFS_FILESIZE; sb->s_blocksize = PAGE_SIZE; sb->s_blocksize_bits = PAGE_SHIFT; @@ -226,16 +223,24 @@ static int efivarfs_fill_super(struct super_block *sb, void *data, int silent) return err; } -static struct dentry *efivarfs_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) +static int efivarfs_get_tree(struct fs_context *fc) +{ + return get_tree_single(fc, efivarfs_fill_super); +} + +static const struct fs_context_operations efivarfs_context_ops = { + .get_tree = efivarfs_get_tree, +}; + +static int efivarfs_init_fs_context(struct fs_context *fc) { - return mount_single(fs_type, flags, data, efivarfs_fill_super); + fc->ops = &efivarfs_context_ops; + return 0; } static void efivarfs_kill_sb(struct super_block *sb) { kill_litter_super(sb); - efivarfs_sb = NULL; /* Remove all entries and destroy */ __efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL, NULL); @@ -244,7 +249,7 @@ static void efivarfs_kill_sb(struct super_block *sb) static struct file_system_type efivarfs_type = { .owner = THIS_MODULE, .name = "efivarfs", - .mount = efivarfs_mount, + .init_fs_context = efivarfs_init_fs_context, .kill_sb = efivarfs_kill_sb, }; -- 2.30.2