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SubjectRe: [patch] fuse: fix compile without CONFIG_BLOCK
Miklos Szeredi wrote:
> Thanks Randy.
>
> Andrew, can you please add this patch in place of
> fuse-depends-on-block.patch?

Acked-by: Randy Dunlap <randy.dunlap@oracle.com>

> Thanks,
> Miklos
> ----
>
> Randy Dunlap wote:
>> Should FUSE depend on BLOCK? Without that and with BLOCK=n, I get:
>>
>> inode.c:(.text+0x3acc5): undefined reference to `sb_set_blocksize'
>> inode.c:(.text+0x3a393): undefined reference to `get_sb_bdev'
>> fs/built-in.o:(.data+0xd718): undefined reference to `kill_block_super
>
> Most fuse filesystems work fine without block device support, so I
> think a better solution is to disable the 'fuseblk' filesystem type if
> BLOCK=n.
>
> Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
> CC: Randy Dunlap <randy.dunlap@oracle.com>
>
> ---
> Index: linux/fs/fuse/inode.c
> ===================================================================
> --- linux.orig/fs/fuse/inode.c 2006-11-19 21:09:19.000000000 +0100
> +++ linux/fs/fuse/inode.c 2006-11-19 23:12:03.000000000 +0100
> @@ -535,8 +535,10 @@ static int fuse_fill_super(struct super_
> return -EINVAL;
>
> if (is_bdev) {
> +#ifdef CONFIG_BLOCK
> if (!sb_set_blocksize(sb, d.blksize))
> return -EINVAL;
> +#endif
> } else {
> sb->s_blocksize = PAGE_CACHE_SIZE;
> sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
> @@ -629,6 +631,14 @@ static int fuse_get_sb(struct file_syste
> return get_sb_nodev(fs_type, flags, raw_data, fuse_fill_super, mnt);
> }
>
> +static struct file_system_type fuse_fs_type = {
> + .owner = THIS_MODULE,
> + .name = "fuse",
> + .get_sb = fuse_get_sb,
> + .kill_sb = kill_anon_super,
> +};
> +
> +#ifdef CONFIG_BLOCK
> static int fuse_get_sb_blk(struct file_system_type *fs_type,
> int flags, const char *dev_name,
> void *raw_data, struct vfsmount *mnt)
> @@ -637,13 +647,6 @@ static int fuse_get_sb_blk(struct file_s
> mnt);
> }
>
> -static struct file_system_type fuse_fs_type = {
> - .owner = THIS_MODULE,
> - .name = "fuse",
> - .get_sb = fuse_get_sb,
> - .kill_sb = kill_anon_super,
> -};
> -
> static struct file_system_type fuseblk_fs_type = {
> .owner = THIS_MODULE,
> .name = "fuseblk",
> @@ -652,6 +655,26 @@ static struct file_system_type fuseblk_f
> .fs_flags = FS_REQUIRES_DEV,
> };
>
> +static inline int register_fuseblk(void)
> +{
> + return register_filesystem(&fuseblk_fs_type);
> +}
> +
> +static inline void unregister_fuseblk(void)
> +{
> + unregister_filesystem(&fuseblk_fs_type);
> +}
> +#else
> +static inline int register_fuseblk(void)
> +{
> + return 0;
> +}
> +
> +static inline void unregister_fuseblk(void)
> +{
> +}
> +#endif
> +
> static decl_subsys(fuse, NULL, NULL);
> static decl_subsys(connections, NULL, NULL);
>
> @@ -673,7 +696,7 @@ static int __init fuse_fs_init(void)
> if (err)
> goto out;
>
> - err = register_filesystem(&fuseblk_fs_type);
> + err = register_fuseblk();
> if (err)
> goto out_unreg;
>
> @@ -688,7 +711,7 @@ static int __init fuse_fs_init(void)
> return 0;
>
> out_unreg2:
> - unregister_filesystem(&fuseblk_fs_type);
> + unregister_fuseblk();
> out_unreg:
> unregister_filesystem(&fuse_fs_type);
> out:
> @@ -698,7 +721,7 @@ static int __init fuse_fs_init(void)
> static void fuse_fs_cleanup(void)
> {
> unregister_filesystem(&fuse_fs_type);
> - unregister_filesystem(&fuseblk_fs_type);
> + unregister_fuseblk();
> kmem_cache_destroy(fuse_inode_cachep);
> }
>


--
~Randy
-
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