static int samplefs_fill_super(struct super_block * sb, void * data, int silent)
{
struct inode * inode;
struct samplefs_sb_info * sfs_sb;
sb->s_maxbytes = MAX_LFS_FILESIZE; /* NB: may be too large for mem */
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = SAMPLEFS_MAGIC;
sb->s_op = &samplefs_super_ops;
sb->s_time_gran = 1; /* 1 nanosecond time granularity */
printk(KERN_INFO "samplefs: fill super\n");
inode = samplefs_get_inode(sb, S_IFDIR | 0755, 0);
/* inode = iget(sb, SAMPLEFS_ROOT_I); was oopsing here */
if (!inode)
return -ENOMEM;
#ifdef CONFIG_SAMPLEFS_DEBUG
printk(KERN_INFO "samplefs: about to alloc s_fs_info\n");
#endif
sb->s_fs_info = kzalloc(sizeof(struct samplefs_sb_info), GFP_KERNEL);
sfs_sb = SFS_SB(sb);
if (!sfs_sb) {
iput(inode);
return -ENOMEM;
}
printk(KERN_INFO "samplefs: about to alloc root inode\n");
sb->s_root = d_make_root(inode);
if (!sb->s_root) {
iput(inode);
kfree(sfs_sb);
return -ENOMEM;
}
/* below not needed for many fs - but an example of per fs sb data */
sfs_sb->local_nls = load_nls_default();
samplefs_parse_mount_options(data, sfs_sb);
/* FS-FILLIN your filesystem specific mount logic/checks here */
return 0;
}
static int samplefs_fill_super(struct super_block *sb, void *data, int silent)
{
struct inode *inode;
struct samplefs_sb_info *sfs_sb;
sb->s_maxbytes = MAX_LFS_FILESIZE; /* NB: may be too large for mem */
sb->s_blocksize = PAGE_SIZE;
sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_magic = SAMPLEFS_MAGIC;
sb->s_op = &samplefs_super_ops;
sb->s_time_gran = 1; /* 1 nanosecond time granularity */
/* Eventually replace iget with:
inode = samplefs_get_inode(sb, S_IFDIR | 0755, 0); */
inode = iget_locked(sb, SAMPLEFS_ROOT_I);
if (!inode)
return -ENOMEM;
unlock_new_inode(inode);
sb->s_fs_info = kzalloc(sizeof(struct samplefs_sb_info), GFP_KERNEL);
sfs_sb = SFS_SB(sb);
if (!sfs_sb) {
iput(inode);
return -ENOMEM;
}
sb->s_root = d_make_root(inode);
if (!sb->s_root) {
iput(inode);
kfree(sfs_sb);
return -ENOMEM;
}
/* below not needed for many fs - but an example of per fs sb data */
sfs_sb->local_nls = load_nls_default();
samplefs_parse_mount_options(data, sfs_sb);
/* FS-FILLIN your filesystem specific mount logic/checks here */
return 0;
}