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btrfs: consolidate failure exits in btrfs_mount() a bit 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-17 01:56:28 -05:00
parent d22ca7de77
commit 59553edf11
1 changed files with 5 additions and 16 deletions
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21
fs/btrfs/super.c
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@ -630,6 +630,7 @@ static int btrfs_fill_super(struct super_block *sb,
save_mount_options(sb, data);
cleancache_init_fs(sb);
sb->s_flags |= MS_ACTIVE;
return 0;
fail_close:
@ -929,14 +930,10 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
}
if (s->s_root) {
if ((flags ^ s->s_flags) & MS_RDONLY) {
deactivate_locked_super(s);
error = -EBUSY;
goto error_close_devices;
}
btrfs_close_devices(fs_devices);
free_fs_info(fs_info);
if ((flags ^ s->s_flags) & MS_RDONLY)
error = -EBUSY;
} else {
char b[BDEVNAME_SIZE];
@ -945,19 +942,11 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
btrfs_sb(s)->fs_info->bdev_holder = fs_type;
error = btrfs_fill_super(s, fs_devices, data,
flags & MS_SILENT ? 1 : 0);
if (error) {
deactivate_locked_super(s);
return ERR_PTR(error);
}
s->s_flags |= MS_ACTIVE;
}
root = get_default_root(s, subvol_objectid);
if (IS_ERR(root)) {
root = !error ? get_default_root(s, subvol_objectid) : ERR_PTR(error);
if (IS_ERR(root))
deactivate_locked_super(s);
return root;
}
return root;