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Subject[patch] fuse: fix compile without CONFIG_BLOCK
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Thanks Randy.

Andrew, can you please add this patch in place of
fuse-depends-on-block.patch?

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);
}

-
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