+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * Copyright (C) 2001-2003 Cluster File Systems, Inc. <info@clusterfs.com>
+ *
+ * This file is part of Lustre, http://www.lustre.org.
+ *
+ * Lustre is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * Lustre is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Lustre; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * smfs data structures.
+ * See also lustre_idl.h for wire formats of requests.
+ *
+ */
+
#ifndef __LUSTRE_SMFS_H
#define __LUSTRE_SMFS_H
+struct snap_inode_info {
+ 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 {
- struct inode *smi_inode;
- __u32 smi_flags;
+ struct inode *smi_inode;
+ __u32 smi_flags;
+ struct snap_inode_info sm_sninfo;
};
struct journal_operations {
struct file_operations sm_file_fops;
struct file_operations sm_sym_fops;
struct dentry_operations sm_dentry_ops;
- struct journal_operations sm_journal_ops;
+ struct journal_operations sm_journal_ops;
};
+/*smfs rec*/
+typedef int (*smfs_pack_rec_func)(char *buffer, struct dentry *dentry,
+ struct inode *dir, void *data1,
+ void *data2, int op);
+typedef enum {
+ PACK_NORMAL = 0,
+ PACK_OST = 1,
+ PACK_MDS = 2,
+ PACK_MAX = 3,
+} pack_func_t;
+
+struct mds_kml_pack_info {
+ int mpi_bufcount;
+ int mpi_size[4];
+ int mpi_total_size;
+};
+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 * smh_name;
+ smfs_hook_func smh_post_op;
+ smfs_hook_func smh_pre_op;
+};
struct smfs_super_info {
- struct super_block *smsi_sb;
- struct vfsmount *smsi_mnt; /* mount the cache kern with
- * kern_do_mount (like MDS) */
- struct fsfilt_operations *sm_cache_fsfilt; /* fsfilt operations */
- struct fsfilt_operations *sm_fsfilt; /* fsfilt operations */
- struct sm_operations *sm_ops; /* cache ops for set cache
- * inode ops */
-
- struct lvfs_run_ctxt *smsi_ctxt;
- struct llog_ctxt *smsi_rec_log; /* smfs kml llog */
- struct dentry *smsi_logs_dir;
- struct dentry *smsi_objects_dir;
- struct dentry *smsi_delete_dir; /* for delete inode dir */
- char *cache_fs_type; /* cache file system type */
- char *fs_type; /* file system type */
- __u32 flags; /* flags */
- __u32 ops_check;
+ struct super_block *smsi_sb;
+ struct vfsmount *smsi_mnt; /* mount the cache kern */
+ struct fsfilt_operations *sm_cache_fsfilt; /* fsfilt operations */
+ struct fsfilt_operations *sm_fsfilt; /* fsfilt operations */
+ struct sm_operations *sm_ops; /* cache ops */
+ struct lvfs_run_ctxt *smsi_ctxt;
+ struct llog_ctxt *smsi_rec_log; /* smfs kml llog */
+ struct dentry *smsi_logs_dir;
+ struct dentry *smsi_objects_dir;
+ struct dentry *smsi_delete_dir; /* for delete inode dir */
+ 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_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*/
};
-#define SMFS_FILE_TYPE "smfs"
-#define SMFS_FILE_MAGIC 0x19760218
+
+#define SMFS_FILE_TYPE "smfs"
+#define SMFS_FILE_MAGIC 0x19760218
struct smfs_file_info {
- struct file *c_file;
- int magic;
+ struct file *c_file;
+ int magic;
};
-struct smfs_record_extents {
- size_t sre_count;
- loff_t sre_off;
+struct smfs_proc_args {
+ struct super_block *sr_sb;
+ int sr_count;
+ int sr_flags;
+ void *sr_data;
+};
+struct fs_extent{
+ __u32 e_block; /* first logical block extent covers */
+ __u32 e_start; /* first physical block extents lives */
+ __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)))
+
#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 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 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)
+ (inode->i_sb->s_fs_info))->sm_cache_fsfilt)
#endif
+#define I2SNAPI(inode) (&(I2SMI(inode)->sm_sninfo))
+#define I2SNAPCOPS(inode) ((S2SMI(inode->i_sb))->smsi_snap_info->snap_cache_fsfilt)
+#define I2SNAPOPS(inode) ((S2SMI(inode->i_sb))->smsi_snap_info->snap_fsfilt)
+
+#define S2SNAPI(sb) (S2SMI(sb)->smsi_snap_info)
#define F2SMFI(file) ((struct smfs_file_info *)((file->private_data)))
#define F2CF(file) (((struct smfs_file_info *) ((file->private_data)))->c_file)
+#define SIZE2BLKS(size, inode) ((size + (I2CI(inode)->i_blksize)) >> (I2CI(inode)->i_blkbits))
+#define OFF2BLKS(off, inode) (off >> (I2CI(inode)->i_blkbits))
-#define SM_DO_REC 0x1
-#define SM_INIT_REC 0x2
-#define SM_CACHE_HOOK 0x4
+#define SM_DO_REC 0x1
+#define SM_INIT_REC 0x2
+#define SM_CACHE_HOOK 0x4
+#define SM_OVER_WRITE 0x8
+#define SM_DIRTY_WRITE 0x10
+#define SM_DO_COW 0x20
+#define SM_DO_COWED 0x40
-#define SMFS_DO_REC(smfs_info) (smfs_info->flags & SM_DO_REC)
-#define SMFS_SET_REC(smfs_info) (smfs_info->flags |= SM_DO_REC)
-#define SMFS_CLEAN_REC(smfs_info) (smfs_info->flags &= ~SM_DO_REC)
+#define SMFS_DO_REC(smfs_info) (smfs_info->smsi_flags & SM_DO_REC)
+#define SMFS_SET_REC(smfs_info) (smfs_info->smsi_flags |= SM_DO_REC)
+#define SMFS_CLEAN_REC(smfs_info) (smfs_info->smsi_flags &= ~SM_DO_REC)
-#define SMFS_INIT_REC(smfs_info) (smfs_info->flags & SM_INIT_REC)
-#define SMFS_SET_INIT_REC(smfs_info) (smfs_info->flags |= SM_INIT_REC)
-#define SMFS_CLEAN_INIT_REC(smfs_info) (smfs_info->flags &= ~SM_INIT_REC)
+#define SMFS_INIT_REC(smfs_info) (smfs_info->smsi_flags & SM_INIT_REC)
+#define SMFS_SET_INIT_REC(smfs_info) (smfs_info->smsi_flags |= SM_INIT_REC)
+#define SMFS_CLEAN_INIT_REC(smfs_info) (smfs_info->smsi_flags &= ~SM_INIT_REC)
#define SMFS_SET_INODE_REC(inode) (I2SMI(inode)->smi_flags |= SM_DO_REC)
#define SMFS_DO_INODE_REC(inode) (I2SMI(inode)->smi_flags & SM_DO_REC)
#define SMFS_CLEAN_INODE_REC(inode) (I2SMI(inode)->smi_flags &= ~SM_DO_REC)
-#define SMFS_CACHE_HOOK(smfs_info) (smfs_info->flags & SM_CACHE_HOOK)
-#define SMFS_SET_CACHE_HOOK(smfs_info) (smfs_info->flags |= SM_CACHE_HOOK)
-#define SMFS_CLEAN_CACHE_HOOK(smfs_info) (smfs_info->flags &= ~SM_CACHE_HOOK)
+#define SMFS_CACHE_HOOK(smfs_info) (smfs_info->smsi_flags & SM_CACHE_HOOK)
+#define SMFS_SET_CACHE_HOOK(smfs_info) (smfs_info->smsi_flags |= SM_CACHE_HOOK)
+#define SMFS_CLEAN_CACHE_HOOK(smfs_info) (smfs_info->smsi_flags &= ~SM_CACHE_HOOK)
#define SMFS_INODE_CACHE_HOOK(inode) (I2SMI(inode)->smi_flags & SM_CACHE_HOOK)
#define SMFS_SET_INODE_CACHE_HOOK(inode) (I2SMI(inode)->smi_flags |= SM_CACHE_HOOK)
#define SMFS_CLEAN_INODE_CACHE_HOOK(inode) (I2SMI(inode)->smi_flags &= ~SM_CACHE_HOOK)
+#define SMFS_INODE_OVER_WRITE(inode) (I2SMI(inode)->smi_flags & SM_OVER_WRITE)
+#define SMFS_SET_INODE_OVER_WRITE(inode) (I2SMI(inode)->smi_flags |= SM_OVER_WRITE)
+#define SMFS_CLEAN_INODE_OVER_WRITE(inode) (I2SMI(inode)->smi_flags &= ~SM_OVER_WRITE)
+
+#define SMFS_INODE_DIRTY_WRITE(inode) (I2SMI(inode)->smi_flags & SM_DIRTY_WRITE)
+#define SMFS_SET_INODE_DIRTY_WRITE(inode) (I2SMI(inode)->smi_flags |= SM_DIRTY_WRITE)
+#define SMFS_CLEAN_INODE_DIRTY_WRITE(inode) (I2SMI(inode)->smi_flags &= ~SM_DIRTY_WRITE)
+
+#define SMFS_DO_COW(smfs_info) (smfs_info->smsi_flags & SM_DO_COW)
+#define SMFS_SET_COW(smfs_info) (smfs_info->smsi_flags |= SM_DO_COW)
+#define SMFS_CLEAN_COW(smfs_info) (smfs_info->smsi_flags &= ~SM_DO_COW)
+
+#define SMFS_SET_INODE_COW(inode) (I2SMI(inode)->smi_flags |= SM_DO_COW)
+#define SMFS_DO_INODE_COW(inode) (I2SMI(inode)->smi_flags & SM_DO_COW)
+#define SMFS_CLEAN_INODE_COW(inode) (I2SMI(inode)->smi_flags &= ~SM_DO_COW)
+
+#define SMFS_SET_INODE_COWED(inode) (I2SMI(inode)->smi_flags |= SM_DO_COWED)
+#define SMFS_DO_INODE_COWED(inode) (I2SMI(inode)->smi_flags & SM_DO_COWED)
+#define SMFS_CLEAN_INODE_COWED(inode) (I2SMI(inode)->smi_flags &= ~SM_DO_COWED)
+
+
#define LVFS_SMFS_BACK_ATTR "lvfs_back_attr"
-#define REC_COUNT_BIT 0
-#define REC_COUNT_MASK 0x01 /*0001*/
-#define REC_OP_BIT 1
-#define REC_OP_MASK 0x06 /*0110*/
-#define REC_WRITE_KML_BIT 3
-#define REC_WRITE_KML_MASK 0x08 /*1000*/
+#define REC_COUNT_BIT 0
+#define REC_COUNT_MASK 0x01 /*0001*/
+#define REC_OP_BIT 1
+#define REC_OP_MASK 0x06 /*0110*/
+#define REC_WRITE_KML_BIT 3
+#define REC_WRITE_KML_MASK 0x08 /*1000*/
#define REC_DEC_LINK_BIT 4
#define REC_DEC_LINK_MASK 0x10 /*10000* different with unlink*/
+#define REC_GET_OID_BIT 5
+#define REC_GET_OID_MASK 0x20 /*100000*/
+#define REC_PACK_TYPE_BIT 6
+#define REC_PACK_TYPE_MASK 0x1C0 /*111000000*/
#define SET_REC_COUNT_FLAGS(flag, count_flag) \
- (flag |= count_flag << REC_COUNT_BIT)
+ (flag |= count_flag << REC_COUNT_BIT)
#define GET_REC_COUNT_FLAGS(flag) \
- ((flag & REC_COUNT_MASK) >> REC_COUNT_BIT)
+ ((flag & REC_COUNT_MASK) >> REC_COUNT_BIT)
#define SET_REC_OP_FLAGS(flag, op_flag) \
- (flag |= op_flag << REC_OP_BIT)
+ (flag |= op_flag << REC_OP_BIT)
#define GET_REC_OP_FLAGS(flag) \
- ((flag & REC_OP_MASK) >> REC_OP_BIT)
+ ((flag & REC_OP_MASK) >> REC_OP_BIT)
#define SET_REC_WRITE_KML_FLAGS(flag, op_flag) \
- (flag |= op_flag << REC_OP_BIT)
+ (flag |= op_flag << REC_OP_BIT)
#define GET_REC_WRITE_KML_FLAGS(flag) \
- ((flag & REC_WRITE_KML_MASK) >> REC_WRITE_KML_BIT)
+ ((flag & REC_WRITE_KML_MASK) >> REC_WRITE_KML_BIT)
#define SET_REC_DEC_LINK_FLAGS(flag, op_flag) \
- (flag |= op_flag << REC_DEC_LINK_BIT)
+ (flag |= op_flag << REC_DEC_LINK_BIT)
#define GET_REC_DEC_LINK_FLAGS(flag) \
- ((flag & REC_DEC_LINK_MASK) >> REC_DEC_LINK_BIT)
+ ((flag & REC_DEC_LINK_MASK) >> REC_DEC_LINK_BIT)
-#define SMFS_REC_ALL 0x1
-#define SMFS_REC_BY_COUNT 0x0
+#define SET_REC_GET_ID_FLAGS(flag, op_flag) \
+ (flag |= op_flag << REC_GET_OID_BIT)
+#define GET_REC_GET_OID_FLAGS(flag) \
+ ((flag & REC_GET_OID_MASK) >> REC_GET_OID_BIT)
-#define SMFS_REINT_REC 0x1
-#define SMFS_UNDO_REC 0x2
+#define SET_REC_PACK_TYPE_INDEX(flag, op_flag) \
+ (flag |= op_flag << REC_PACK_TYPE_BIT)
+#define GET_REC_PACK_TYPE_INDEX(flag) \
+ ((flag & REC_PACK_TYPE_MASK) >> REC_PACK_TYPE_BIT)
-#define SMFS_WRITE_KML 0x1
+#define SMFS_REC_ALL 0x1
+#define SMFS_REC_BY_COUNT 0x0
-#define SMFS_DEC_LINK 0x1
+#define SMFS_REINT_REC 0x1
+#define SMFS_UNDO_REC 0x2
+
+#define SMFS_WRITE_KML 0x1
+#define SMFS_DEC_LINK 0x1
+#define SMFS_GET_OID 0x1
#define SMFS_DO_REINT_REC(flag) \
- (GET_REC_OP_FLAGS(flag) == SMFS_REINT_REC)
+ (GET_REC_OP_FLAGS(flag) == SMFS_REINT_REC)
#define SMFS_DO_UNDO_REC(flag) \
- (GET_REC_OP_FLAGS(flag) == SMFS_UNDO_REC)
+ (GET_REC_OP_FLAGS(flag) == SMFS_UNDO_REC)
#define SMFS_DO_REC_ALL(flag) \
- (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_ALL)
+ (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_ALL)
#define SMFS_DO_REC_BY_COUNT(flag) \
- (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_BY_COUNT)
+ (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_BY_COUNT)
#define SMFS_DO_WRITE_KML(flag) \
- (GET_REC_WRITE_KML_FLAGS(flag) == SMFS_WRITE_KML)
+ (GET_REC_WRITE_KML_FLAGS(flag) == SMFS_WRITE_KML)
#define SMFS_DO_DEC_LINK(flag) \
- (GET_REC_DEC_LINK_FLAGS(flag) == SMFS_DEC_LINK)
+ (GET_REC_DEC_LINK_FLAGS(flag) == SMFS_DEC_LINK)
+
+#define SMFS_DO_GET_OID(flag) \
+ (GET_REC_GET_OID_FLAGS(flag) == SMFS_GET_OID)
+
+/*DIRTY flags of write ops*/
+#define REINT_EXTENTS_FLAGS "replay_flags"
+#define SMFS_DIRTY_WRITE 0x01
+#define SMFS_OVER_WRITE 0x02
+
-static inline void duplicate_inode(struct inode *dst_inode,
- struct inode *src_inode)
+static inline void duplicate_inode(struct inode *dst_inode,
+ struct inode *src_inode)
{
- dst_inode->i_mode = src_inode->i_mode;
- dst_inode->i_uid = src_inode->i_uid;
- dst_inode->i_gid = src_inode->i_gid;
- dst_inode->i_nlink = src_inode->i_nlink;
- dst_inode->i_size = src_inode->i_size;
- dst_inode->i_atime = src_inode->i_atime;
- dst_inode->i_ctime = src_inode->i_ctime;
- dst_inode->i_mtime = src_inode->i_mtime;
- dst_inode->i_blksize = src_inode->i_blksize;
- dst_inode->i_version = src_inode->i_version;
- dst_inode->i_state = src_inode->i_state;
- dst_inode->i_generation = src_inode->i_generation;
-
- /* This is to make creating special files working. */
- dst_inode->i_rdev = src_inode->i_rdev;
+ dst_inode->i_mode = src_inode->i_mode;
+ dst_inode->i_uid = src_inode->i_uid;
+ dst_inode->i_gid = src_inode->i_gid;
+ dst_inode->i_nlink = src_inode->i_nlink;
+ dst_inode->i_size = src_inode->i_size;
+ dst_inode->i_atime = src_inode->i_atime;
+ dst_inode->i_ctime = src_inode->i_ctime;
+ dst_inode->i_mtime = src_inode->i_mtime;
+ dst_inode->i_blksize = src_inode->i_blksize;
+ dst_inode->i_version = src_inode->i_version;
+ dst_inode->i_state = src_inode->i_state;
+ dst_inode->i_generation = src_inode->i_generation;
+
+ /* This is to make creating special files working. */
+ dst_inode->i_rdev = src_inode->i_rdev;
}
-static inline void post_smfs_inode(struct inode *inode,
- struct inode *cache_inode)
+static inline void post_smfs_inode(struct inode *inode,
+ struct inode *cache_inode)
{
- 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
- */
- cache_inode->i_state &=~I_LOCK;
- inode->i_blocks = cache_inode->i_blocks;
- }
+ 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
+ */
+ 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)
+ 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 */
-static inline void duplicate_file(struct file *dst_file,
- struct file *src_file)
+static inline void duplicate_file(struct file *dst_file, struct file *src_file)
+{
+ if (dst_file && src_file) {
+ dst_file->f_pos = src_file->f_pos;
+ dst_file->f_mode = src_file->f_mode;
+ dst_file->f_flags = src_file->f_flags;
+ dst_file->f_owner = src_file->f_owner;
+ dst_file->f_vfsmnt = src_file->f_vfsmnt;
+
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+ dst_file->f_reada = src_file->f_reada;
+ dst_file->f_ramax = src_file->f_ramax;
+ dst_file->f_raend = src_file->f_raend;
+ dst_file->f_ralen = src_file->f_ralen;
+ dst_file->f_rawin = src_file->f_rawin;
+ #else
+ dst_file->f_ra = src_file->f_ra;
+ #endif
+ }
+}
+
+static inline void duplicate_sb(struct super_block *dst_sb,
+ struct super_block *src_sb)
+{
+ dst_sb->s_blocksize = src_sb->s_blocksize;
+ dst_sb->s_magic = src_sb->s_magic;
+ dst_sb->s_blocksize_bits = src_sb->s_blocksize_bits;
+ dst_sb->s_maxbytes = src_sb->s_maxbytes;
+ dst_sb->s_flags = src_sb->s_flags;
+}
+
+static inline void d_unalloc(struct dentry *dentry)
{
- dst_file->f_pos = src_file->f_pos;
- dst_file->f_mode = src_file->f_mode;
- dst_file->f_flags = src_file->f_flags;
- dst_file->f_owner = src_file->f_owner;
- dst_file->f_vfsmnt = src_file->f_vfsmnt;
-
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- dst_file->f_reada = src_file->f_reada;
- dst_file->f_ramax = src_file->f_ramax;
- dst_file->f_raend = src_file->f_raend;
- dst_file->f_ralen = src_file->f_ralen;
- dst_file->f_rawin = src_file->f_rawin;
+ list_del(&dentry->d_hash);
+ INIT_LIST_HEAD(&dentry->d_hash);
#else
- dst_file->f_ra = src_file->f_ra;
+ hlist_del_init(&dentry->d_hash);
+ dentry->d_flags |= DCACHE_UNHASHED;
#endif
+ dput(dentry); /* this will free the dentry memory */
}
-static inline void duplicate_sb(struct super_block *dst_sb,
- struct super_block *src_sb)
+static inline int smfs_get_dentry_name_index(struct dentry *dentry,
+ struct qstr *str,
+ int *index)
{
- dst_sb->s_blocksize = src_sb->s_blocksize;
- dst_sb->s_magic = src_sb->s_magic;
- dst_sb->s_blocksize_bits = src_sb->s_blocksize_bits;
- dst_sb->s_maxbytes = src_sb->s_maxbytes;
+ 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 d_unalloc(struct dentry *dentry)
+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 (!parent_dentry)
+ cache_dentry->d_parent = cache_dentry;
+ if (cache_inode)
+ d_add(cache_dentry, cache_inode);
+ RETURN(cache_dentry);
+}
+
+static inline void post_smfs_dentry(struct dentry *cache_dentry)
{
+ if (!cache_dentry)
+ return;
+ if (cache_dentry->d_inode)
+ igrab(cache_dentry->d_inode);
+ d_unalloc(cache_dentry);
+}
+
+static inline int lookup_by_path(char *path, int flags, struct nameidata *nd)
+{
+ struct dentry *dentry = NULL;
+ int rc = 0;
+
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- list_del(&dentry->d_hash);
- INIT_LIST_HEAD(&dentry->d_hash);
+ if (path_init(path, flags, nd)) {
#else
- hlist_del_init(&dentry->d_hash);
+ if (path_lookup(path, flags, nd)) {
#endif
- dput(dentry); /* this will free the dentry memory */
+ rc = path_walk(path, nd);
+ if (rc)
+ RETURN(rc);
+ } else {
+ RETURN(-EINVAL);
+ }
+
+ dentry = nd->dentry;
+
+ if (!dentry->d_inode || is_bad_inode(dentry->d_inode)) {
+ path_release(nd);
+ RETURN(-ENODEV);
+ }
+ RETURN(rc);
}
-static inline struct dentry *pre_smfs_dentry(struct dentry *parent_dentry,
- struct inode *cache_inode,
- struct dentry *dentry)
+/*FIXME there should be more conditions in this check*/
+static inline int smfs_do_rec(struct inode *inode)
{
- struct dentry *cache_dentry = NULL;
-
- cache_dentry = d_alloc(parent_dentry, &dentry->d_name);
- if (!cache_dentry)
- RETURN(NULL);
- if (!parent_dentry)
- cache_dentry->d_parent = cache_dentry;
- if (cache_inode)
- d_add(cache_dentry, cache_inode);
- RETURN(cache_dentry);
+ struct super_block *sb = inode->i_sb;
+ struct smfs_super_info *smfs_info = S2SMI(sb);
+
+ if (SMFS_DO_REC(smfs_info) && SMFS_INIT_REC(smfs_info) &&
+ SMFS_DO_INODE_REC(inode))
+ return 1;
+ return 0;
}
-static inline void post_smfs_dentry(struct dentry *cache_dentry)
+static inline int smfs_cache_hook(struct inode *inode)
{
- if (!cache_dentry)
- return;
- if (cache_dentry->d_inode)
- igrab(cache_dentry->d_inode);
- d_unalloc(cache_dentry);
+ struct smfs_super_info *smfs_info = I2CSB(inode);
+
+ if (SMFS_CACHE_HOOK(smfs_info) && SMFS_INIT_REC(smfs_info) &&
+ SMFS_INODE_CACHE_HOOK(inode))
+ return 1;
+ else
+ return 0;
}
+
+static inline int smfs_do_cow(struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+ struct smfs_super_info *smfs_info = S2SMI(sb);
+
+ if (SMFS_DO_COW(smfs_info) && SMFS_DO_INODE_COW(inode))
+ return 1;
+ return 0;
+}
+
+
+/* XXX BUG 3188 -- must return to one set of opcodes */
+#define SMFS_TRANS_OP(inode, op) \
+{ \
+ if (smfs_do_rec(inode)) \
+ op = op | 0x10; \
+ if (smfs_cache_hook(inode)) \
+ op = op | 0x20; \
+}
+
+extern int smfs_start_rec(struct super_block *sb, struct vfsmount *mnt);
+extern int smfs_stop_rec(struct super_block *sb);
+extern int smfs_write_extents(struct inode *dir, struct dentry *dentry,
+ unsigned long from, unsigned long num);
+extern int smfs_rec_setattr(struct inode *dir, struct dentry *dentry,
+ struct iattr *attr);
+extern int smfs_rec_precreate(struct dentry *dentry, int *num, struct obdo *oa);
+extern int smfs_rec_md(struct inode *inode, void * lmm, int lmm_size);
+extern int smfs_rec_unpack(struct smfs_proc_args *args, char *record,
+ char **pbuf, int *opcode);
+
+
+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