#define __LUSTRE_SMFS_H
struct snap_inode_info {
- int sn_flags; /* the flags indicated inode type */
+ int sn_flags; /*the flags indicated inode type */
int sn_gen; /*the inode generation*/
+ int sn_index; /*the inode snap_index*/
+ ino_t sn_root_ino; /*the root ino of this snap*/
};
struct smfs_inode_info {
+ /* this first part of struct should be the same as in mds_info_info */
+ struct lustre_id smi_id;
+
+ /* smfs part. */
struct inode *smi_inode;
__u32 smi_flags;
struct snap_inode_info sm_sninfo;
int mpi_size[4];
int mpi_total_size;
};
-typedef int (*smfs_hook_func)(struct inode *inode, struct dentry *dentry,
+typedef int (*smfs_hook_func)(struct inode *inode, void *dentry,
void *data1, void *data2, int op, void *handle);
struct smfs_hook_ops {
struct list_head smh_list;
char *smsi_cache_ftype; /* cache file system type */
char *smsi_ftype; /* file system type */
struct obd_export *smsi_exp; /* file system obd exp */
- struct snap_info *smsi_snap_info; /* snap table cow */
+ struct snap_super_info *smsi_snap_info; /* snap table cow */
smfs_pack_rec_func smsi_pack_rec[PACK_MAX]; /* sm_pack_rec type ops */
__u32 smsi_flags; /* flags */
__u32 smsi_ops_check;
struct list_head smsi_hook_list;
+ kmem_cache_t * smsi_inode_cachep; /*inode_cachep*/
};
__u32 e_num; /* number of blocks covered by extent */
};
-#define I2SMI(inode) ((struct smfs_inode_info *) (&(inode->u.generic_ip)))
+#define I2SMI(inode) ((struct smfs_inode_info *) ((inode->u.generic_ip)))
+#define I2FSI(inode) (((inode->u.generic_ip)))
+
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-#define S2SMI(sb) ((struct smfs_super_info *) (&(sb->u.generic_sbp)))
-#define S2CSB(sb) (((struct smfs_super_info *) (&(sb->u.generic_sbp)))->smsi_sb)
+#define S2FSI(sb) (((sb->u.generic_sbp)))
+#define S2SMI(sb) ((struct smfs_super_info *) ((sb->u.generic_sbp)))
+#define S2CSB(sb) (((struct smfs_super_info *)((sb->u.generic_sbp)))->smsi_sb)
#else
+#define S2FSI(sb) ((sb->s_fs_info))
#define S2SMI(sb) ((struct smfs_super_info *) (sb->s_fs_info))
#define S2CSB(sb) (((struct smfs_super_info *) (sb->s_fs_info))->smsi_sb)
#endif
-#define I2CI(inode) (((struct smfs_inode_info*) (&(inode->u.generic_ip)))->smi_inode)
+#define I2CI(inode) (((struct smfs_inode_info*) ((inode->u.generic_ip)))->smi_inode)
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-#define I2CSB(inode) ((struct smfs_super_info *) (&(inode->i_sb->u.generic_sbp)))
+#define I2CSB(inode) ((struct smfs_super_info *) ((inode->i_sb->u.generic_sbp)))
#else
#define I2CSB(inode) ((struct smfs_super_info *) (inode->i_sb->s_fs_info))
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
#define I2FOPS(inode) (((struct smfs_super_info *) \
- (&(inode->i_sb->u.generic_sbp)))->sm_cache_fsfilt)
+ ((inode->i_sb->u.generic_sbp)))->sm_cache_fsfilt)
#else
#define I2FOPS(inode) (((struct smfs_super_info *) \
(inode->i_sb->s_fs_info))->sm_cache_fsfilt)
dst_inode->i_version = src_inode->i_version;
dst_inode->i_state = src_inode->i_state;
dst_inode->i_generation = src_inode->i_generation;
+ dst_inode->i_flags = src_inode->i_flags;
/* This is to make creating special files working. */
dst_inode->i_rdev = src_inode->i_rdev;
{
if (inode && cache_inode) {
duplicate_inode(inode, cache_inode);
- /*Here we must release the cache_inode,
- *Otherwise we will have no chance to
- *do it
+
+ /*
+ * here we must release the cache_inode, otherwise we will have
+ * no chance to do it later.
*/
cache_inode->i_state &=~I_LOCK;
inode->i_blocks = cache_inode->i_blocks;
static inline void pre_smfs_inode(struct inode *inode,
struct inode *cache_inode)
{
- if (inode && cache_inode)
- duplicate_inode(cache_inode, inode);
+ if (inode && cache_inode) {
+ cache_inode->i_state = inode->i_state;
+ // duplicate_inode(cache_inode, inode);
+ }
}
/* instantiate a file handle to the cache file */
INIT_LIST_HEAD(&dentry->d_hash);
#else
hlist_del_init(&dentry->d_hash);
+ dentry->d_flags |= DCACHE_UNHASHED;
#endif
dput(dentry); /* this will free the dentry memory */
}
+static inline int smfs_get_dentry_name_index(struct dentry *dentry,
+ struct qstr *str,
+ int *index)
+{
+ char *name = (char *)dentry->d_name.name;
+ unsigned long hash;
+ unsigned char c;
+ char *str_name;
+ int len = 0, name_len = 0;
+
+ name_len = dentry->d_name.len;
+ if (!name_len)
+ return 0;
+ hash = init_name_hash();
+ while (name_len--) {
+ c = *(const unsigned char *)name++;
+ if (c == ':' || c == '\0')
+ break;
+ hash = partial_name_hash(c, hash);
+ len ++;
+ }
+ str->hash = end_name_hash(hash);
+ OBD_ALLOC(str_name, len + 1);
+ memcpy(str_name, dentry->d_name.name, len);
+ str->len = len;
+ str->name = str_name;
+ if (index && c == ':') {
+ *index = simple_strtoul(name, 0, 0);
+ }
+ return 0;
+}
+
+static inline void smfs_free_dentry_name(struct qstr *str)
+{
+ char *name = (char*)str->name;
+ OBD_FREE(name, str->len + 1);
+}
+
static inline struct dentry *pre_smfs_dentry(struct dentry *parent_dentry,
struct inode *cache_inode,
struct dentry *dentry)
{
struct dentry *cache_dentry = NULL;
-
+
cache_dentry = d_alloc(parent_dentry, &dentry->d_name);
if (!cache_dentry)
RETURN(NULL);
{
if (!cache_dentry)
return;
+
+ /*
+ * this is needed because d_unalloc() calls dput(), which in turn calls
+ * iput() on dentry inode.
+ */
if (cache_dentry->d_inode)
igrab(cache_dentry->d_inode);
d_unalloc(cache_dentry);
return 0;
}
+
/* XXX BUG 3188 -- must return to one set of opcodes */
#define SMFS_TRANS_OP(inode, op) \
{ \
extern int smfs_post_setup(struct super_block *sb, struct vfsmount *mnt);
extern int smfs_post_cleanup(struct super_block *sb);
+extern struct inode *smfs_get_inode (struct super_block *sb, ino_t hash,
+ struct inode *dir, int index);
+
+extern int is_smfs_sb(struct super_block *sb);
#endif /* _LUSTRE_SMFS_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff