-/*
- * snapfs/cache.c
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * lustre/smfs/cache.c
+ * Lustre filesystem abstraction routines
+ *
+ * Copyright (C) 2004 Cluster File Systems, Inc.
+ *
+ * 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.
*/
-
#define DEBUG_SUBSYSTEM S_SM
#include <linux/kmod.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/string.h>
+#include <linux/lustre_idl.h>
#include <portals/list.h>
-#include "smfs_internal.h"
-struct sm_ops smfs_operations;
-
-extern struct inode_operations smfs_file_iops;
-extern struct file_operations smfs_file_fops;
-extern struct address_space_operations smfs_file_aops;
-extern struct inode_operations smfs_sym_iops;
-extern struct file_operations smfs_sym_fops;
-extern struct super_operations smfs_super_ops;
-
-inline struct super_operations *cache_sops(struct sm_ops *smfs_ops)
-{
- return &smfs_ops->sm_sb_ops;
-}
+#include <linux/obd_class.h>
+#include <linux/obd_support.h>
+#include <linux/lustre_lib.h>
+#include <linux/lustre_fsfilt.h>
+#include <linux/lustre_smfs.h>
-inline struct inode_operations *cache_diops(struct sm_ops *smfs_ops)
+#include "smfs_internal.h"
+int smfs_init_sm_ops(struct smfs_super_info *smb)
{
- return &smfs_ops->sm_dir_iops;
-}
+ struct sm_operations *sm_ops; /*cache ops for set cache inode ops*/
-inline struct inode_operations *cache_fiops(struct sm_ops *smfs_ops)
-{
- return &smfs_ops->sm_file_iops;
-}
+ OBD_ALLOC(sm_ops, sizeof(struct sm_operations));
+ if (!sm_ops)
+ RETURN(-ENOMEM);
-inline struct inode_operations *cache_siops(struct sm_ops *smfs_ops)
-{
- return &smfs_ops->sm_sym_iops;
+ smb->sm_ops = sm_ops;
+ RETURN(0);
}
-inline struct file_operations *cache_dfops(struct sm_ops *smfs_ops)
+void smfs_cleanup_sm_ops(struct smfs_super_info *smb)
{
- return &smfs_ops->sm_dir_fops;
+ if (smb->sm_ops)
+ OBD_FREE(smb->sm_ops, sizeof(struct sm_operations));
}
-inline struct file_operations *cache_ffops(struct sm_ops *smfs_ops)
+static void setup_iops(struct inode *cache_inode,
+ struct inode_operations *iops,
+ struct inode_operations *cache_iops)
{
- return &smfs_ops->sm_file_fops;
-}
-inline struct address_space_operations *cache_faops(struct sm_ops *smfs_ops)
-{
- return &smfs_ops->sm_file_aops;
+ if (cache_inode->i_op && cache_iops && iops) {
+ if (cache_inode->i_op->create)
+ iops->create = cache_iops->create;
+ if (cache_inode->i_op->lookup)
+ iops->lookup = cache_iops->lookup;
+ if (cache_inode->i_op->link)
+ iops->link = cache_iops->link;
+ if (cache_inode->i_op->unlink)
+ iops->unlink = cache_iops->unlink;
+ if (cache_inode->i_op->symlink)
+ iops->symlink = cache_iops->symlink;
+ if (cache_inode->i_op->mkdir)
+ iops->mkdir = cache_iops->mkdir;
+ if (cache_inode->i_op->rmdir)
+ iops->rmdir = cache_iops->rmdir;
+ if (cache_inode->i_op->mknod)
+ iops->mknod = cache_iops->mknod;
+ if (cache_inode->i_op->rename)
+ iops->rename = cache_iops->rename;
+ if (cache_inode->i_op->readlink)
+ iops->readlink = cache_iops->readlink;
+ if (cache_inode->i_op->follow_link)
+ iops->follow_link = cache_iops->follow_link;
+ if (cache_inode->i_op->truncate)
+ iops->truncate = cache_iops->truncate;
+ if (cache_inode->i_op->permission)
+ iops->permission = cache_iops->permission;
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+ if (cache_inode->i_op->revalidate)
+ iops->revalidate = cache_iops->revalidate;
+#endif
+ if (cache_inode->i_op->setattr)
+ iops->setattr = cache_iops->setattr;
+ if (cache_inode->i_op->getattr)
+ iops->getattr = cache_iops->getattr;
+ if (cache_inode->i_op->setxattr)
+ iops->setxattr = cache_iops->setxattr;
+ if (cache_inode->i_op->getxattr)
+ iops->getxattr = cache_iops->getxattr;
+ if (cache_inode->i_op->listxattr)
+ iops->listxattr = cache_iops->listxattr;
+ if (cache_inode->i_op->removexattr)
+ iops->removexattr = cache_iops->removexattr;
+ }
}
-inline struct file_operations *cache_sfops(struct sm_ops *smfs_ops)
+static void setup_fops(struct inode *cache_inode,
+ struct file_operations *fops,
+ struct file_operations *cache_fops)
{
- return &smfs_ops->sm_sym_fops;
-}
+ if (cache_inode->i_fop && cache_fops && fops) {
+ if (cache_inode->i_fop->llseek)
+ fops->llseek = cache_fops->llseek;
+ if (cache_inode->i_fop->read)
+ fops->read = cache_fops->read;
+ if (cache_inode->i_fop->write)
+ fops->write = cache_fops->write;
+ if (cache_inode->i_fop->readdir)
+ fops->readdir = cache_fops->readdir;
+ if (cache_inode->i_fop->poll)
+ fops->poll = cache_fops->poll;
+ if (cache_inode->i_fop->ioctl)
+ fops->ioctl = cache_fops->ioctl;
+ if (cache_inode->i_fop->mmap)
+ fops->mmap = cache_fops->mmap;
+ if (cache_inode->i_fop->flush)
+ fops->flush = cache_fops->flush;
+ if (cache_inode->i_fop->fsync)
+ fops->fsync = cache_fops->fsync;
+ if (cache_inode->i_fop->fasync)
+ fops->fasync = cache_fops->fasync;
+ if (cache_inode->i_fop->lock)
+ fops->lock = cache_fops->lock;
+ if (cache_inode->i_fop->readv)
+ fops->readv = cache_fops->readv;
+ if (cache_inode->i_fop->writev)
+ fops->writev = cache_fops->writev;
+ if (cache_inode->i_fop->sendpage)
+ fops->sendpage = cache_fops->sendpage;
+ if (cache_inode->i_fop->get_unmapped_area)
+ fops->get_unmapped_area = cache_fops->get_unmapped_area;
-inline struct dentry_operations *cache_dops(struct sm_ops *smfs_ops)
-{
- return &smfs_ops->sm_dentry_ops;
+ /* for dir file we also need replace the open and release method,
+ * because we need initialize the cache file structs. */
+ fops->open = cache_fops->open;
+ fops->release = cache_fops->release;
+ }
}
-void init_smfs_cache()
-{
- memset(&smfs_operations, 0, sizeof(struct sm_ops));
-}
-void cleanup_smfs_cache()
+static void setup_sm_file_ops(struct inode *cache_inode, struct inode *inode,
+ struct inode_operations *cache_iops,
+ struct file_operations *cache_fops)
{
- return;
+ struct smfs_super_info *smb;
+ struct inode_operations *iops;
+ struct file_operations *fops;
+
+ smb = S2SMI(inode->i_sb);
+
+ if (smb->smsi_ops_check & FILE_OPS_CHECK)
+ return;
+
+ iops = cache_fiops(smb);
+ fops = cache_ffops(smb);
+
+ setup_iops(cache_inode, iops, cache_iops);
+ setup_fops(cache_inode, fops, cache_fops);
+
+ lock_kernel();
+ smb->smsi_ops_check |= FILE_OPS_CHECK;
+ unlock_kernel();
}
-static void setup_sm_symlink_ops(struct inode *cache_inode,
- struct inode *inode,
- struct inode_operations *cache_sym_iops,
- struct file_operations *cache_sym_fops)
+static void setup_sm_dir_ops(struct inode *cache_inode, struct inode *inode,
+ struct inode_operations *cache_dir_iops,
+ struct file_operations *cache_dir_fops)
{
- return;
+ struct smfs_super_info *smb;
+ struct inode_operations *iops;
+ struct file_operations *fops;
+
+ smb = S2SMI(inode->i_sb);
+
+ if (smb->smsi_ops_check & DIR_OPS_CHECK)
+ return;
+
+ iops = cache_diops(smb);
+ fops = cache_dfops(smb);
+
+ setup_iops(cache_inode, iops, cache_dir_iops);
+ setup_fops(cache_inode, fops, cache_dir_fops);
+
+ lock_kernel();
+ smb->smsi_ops_check |= DIR_OPS_CHECK;
+ unlock_kernel();
}
-static void setup_sm_file_ops(struct inode *cache_inode,
- struct inode *inode,
- struct inode_operations *cache_iops,
- struct file_operations *cache_fops,
- struct address_space_operations *cache_aops)
+static void setup_sm_symlink_ops(struct inode *cache_inode, struct inode *inode,
+ struct inode_operations *cache_sym_iops,
+ struct file_operations *cache_sym_fops)
{
-
- struct smfs_super_info *smb;
- struct inode_operations *iops;
- struct file_operations *fops;
- struct address_space_operations *aops;
-
- smb = S2SMI(inode->i_sb);
-
- if (smb->ops_check & FILE_OPS_CHECK)
- return;
- smb->ops_check |= FILE_OPS_CHECK;
-
- iops = cache_fiops(&smfs_operations);
- fops = cache_ffops(&smfs_operations);
- aops = cache_faops(&smfs_operations);
-
- memset(iops , 0 , sizeof (struct inode_operations));
- memset(fops , 0 , sizeof (struct file_operations));
- memset(aops , 0 , sizeof (struct address_space_operations));
-
- if (cache_inode->i_op) {
- if (cache_inode->i_op->create)
- iops->create = cache_iops->create;
- if (cache_inode->i_op->create_it)
- iops->create_it = cache_iops->create_it;
- if (cache_inode->i_op->lookup)
- iops->lookup = cache_iops->lookup;
- if (cache_inode->i_op->lookup_raw)
- iops->lookup_raw = cache_iops->lookup_raw;
- if (cache_inode->i_op->lookup_it)
- iops->lookup_it = cache_iops->lookup_it;
- if (cache_inode->i_op->link)
- iops->link = cache_iops->link;
- if (cache_inode->i_op->link_raw)
- iops->link_raw = cache_iops->link_raw;
- if (cache_inode->i_op->unlink)
- iops->unlink = cache_iops->unlink;
- if (cache_inode->i_op->unlink_raw)
- iops->unlink_raw = cache_iops->unlink_raw;
- if (cache_inode->i_op->symlink)
- iops->symlink = cache_iops->symlink;
- if (cache_inode->i_op->symlink_raw)
- iops->symlink_raw = cache_iops->symlink_raw;
- if (cache_inode->i_op->mkdir)
- iops->mkdir = cache_iops->mkdir;
- if (cache_inode->i_op->mkdir_raw)
- iops->mkdir_raw = cache_iops->mkdir_raw;
- if (cache_inode->i_op->rmdir)
- iops->rmdir = cache_iops->rmdir;
- if (cache_inode->i_op->rmdir_raw)
- iops->rmdir_raw = cache_iops->rmdir_raw;
- if (cache_inode->i_op->mknod)
- iops->mknod = cache_iops->mknod;
- if (cache_inode->i_op->mknod_raw)
- iops->mknod_raw = cache_iops->mknod_raw;
- if (cache_inode->i_op->rename)
- iops->rename = cache_iops->rename;
- if (cache_inode->i_op->rename_raw)
- iops->rename_raw = cache_iops->rename_raw;
- if (cache_inode->i_op->readlink)
- iops->readlink = cache_iops->readlink;
- if (cache_inode->i_op->follow_link)
- iops->follow_link = cache_iops->follow_link;
- if (cache_inode->i_op->truncate)
- iops->truncate = cache_iops->truncate;
- if (cache_inode->i_op->permission)
- iops->permission = cache_iops->permission;
- if (cache_inode->i_op->revalidate)
- iops->revalidate = cache_iops->revalidate;
- if (cache_inode->i_op->revalidate_it)
- iops->revalidate_it = cache_iops->revalidate_it;
- if (cache_inode->i_op->setattr)
- iops->setattr = cache_iops->setattr;
- if (cache_inode->i_op->setattr_raw)
- iops->setattr_raw = cache_iops->setattr_raw;
- if (cache_inode->i_op->getattr)
- iops->getattr = cache_iops->getattr;
- if (cache_inode->i_op->setxattr)
- iops->setxattr = cache_iops->setxattr;
- if (cache_inode->i_op->getxattr)
- iops->getxattr = cache_iops->getxattr;
- if (cache_inode->i_op->listxattr)
- iops->listxattr = cache_iops->listxattr;
- if (cache_inode->i_op->removexattr)
- iops->removexattr = cache_iops->removexattr;
- }
- if (cache_inode->i_fop) {
-
- }
- if (cache_inode->i_mapping && cache_inode->i_mapping->a_ops) {
-
- }
- return;
+ struct smfs_super_info *smb;
+ struct inode_operations *iops;
+ struct file_operations *fops;
+
+ smb = S2SMI(inode->i_sb);
+
+ if (smb->smsi_ops_check & SYMLINK_OPS_CHECK)
+ return;
+
+ iops = cache_siops(smb);
+ fops = cache_sfops(smb);
+
+ setup_iops(cache_inode, iops, cache_sym_iops);
+ setup_fops(cache_inode, fops, cache_sym_fops);
+
+ lock_kernel();
+ smb->smsi_ops_check |= SYMLINK_OPS_CHECK;
+ unlock_kernel();
}
-static void setup_sm_sb_ops(struct super_block *cache_sb,
- struct super_block *sb,
- struct super_operations *smfs_sops)
+static void setup_sm_sb_ops(struct super_block *cache_sb, struct super_block *sb,
+ struct super_operations *smfs_sops)
{
- struct smfs_super_info *smb;
+ struct smfs_super_info *smb;
struct super_operations *sops;
- ENTRY;
-
- smb = S2SMI(sb);
-
- if (smb->ops_check & SB_OPS_CHECK)
- return;
- smb->ops_check |= SB_OPS_CHECK;
- sops = cache_sops(&smfs_operations);
- memset(sops, 0, sizeof (struct super_operations));
-
- if (cache_sb->s_op) {
- if (cache_sb->s_op->read_inode)
- sops->read_inode = smfs_sops->read_inode;
- if (cache_sb->s_op->read_inode2)
- sops->read_inode2 = smfs_sops->read_inode2;
- if (cache_sb->s_op->dirty_inode)
- sops->dirty_inode = smfs_sops->dirty_inode;
- if (cache_sb->s_op->write_inode)
- sops->write_inode = smfs_sops->write_inode;
- if (cache_sb->s_op->put_inode)
- sops->put_inode = smfs_sops->put_inode;
- if (cache_sb->s_op->delete_inode)
- sops->delete_inode = smfs_sops->delete_inode;
- if (cache_sb->s_op->put_super)
- sops->put_super = smfs_sops->put_super;
- if (cache_sb->s_op->write_super)
- sops->write_super = smfs_sops->write_super;
- if (cache_sb->s_op->write_super_lockfs)
- sops->write_super_lockfs = smfs_sops->write_super_lockfs;
- if (cache_sb->s_op->unlockfs)
- sops->unlockfs = smfs_sops->unlockfs;
- if (cache_sb->s_op->statfs)
- sops->statfs = smfs_sops->statfs;
- if (cache_sb->s_op->remount_fs)
- sops->remount_fs = smfs_sops->remount_fs;
- if (cache_sb->s_op->clear_inode)
- sops->clear_inode = smfs_sops->clear_inode;
- if (cache_sb->s_op->umount_begin)
- sops->umount_begin = smfs_sops->umount_begin;
- if (cache_sb->s_op->fh_to_dentry)
- sops->fh_to_dentry = smfs_sops->fh_to_dentry;
- if (cache_sb->s_op->dentry_to_fh)
- sops->dentry_to_fh = smfs_sops->dentry_to_fh;
- if (cache_sb->s_op->show_options)
- sops->show_options = smfs_sops->show_options;
- }
-
- return;
-}
+ ENTRY;
+
+ smb = S2SMI(sb);
+
+ if (smb->smsi_ops_check & SB_OPS_CHECK)
+ return;
+
+ sops = cache_sops(smb);
+ memset(sops, 0, sizeof (struct super_operations));
+
+ if (cache_sb->s_op) {
+ if (cache_sb->s_op->read_inode)
+ sops->read_inode = smfs_sops->read_inode;
+ if (cache_sb->s_op->dirty_inode)
+ sops->dirty_inode = smfs_sops->dirty_inode;
+ if (cache_sb->s_op->write_inode)
+ sops->write_inode = smfs_sops->write_inode;
+ if (cache_sb->s_op->put_inode)
+ sops->put_inode = smfs_sops->put_inode;
+ if (cache_sb->s_op->delete_inode)
+ sops->delete_inode = smfs_sops->delete_inode;
+ if (cache_sb->s_op->put_super)
+ sops->put_super = smfs_sops->put_super;
+ if (cache_sb->s_op->write_super)
+ sops->write_super = smfs_sops->write_super;
+ if (cache_sb->s_op->write_super_lockfs)
+ sops->write_super_lockfs = smfs_sops->write_super_lockfs;
+ if (cache_sb->s_op->unlockfs)
+ sops->unlockfs = smfs_sops->unlockfs;
+ if (cache_sb->s_op->statfs)
+ sops->statfs = smfs_sops->statfs;
+ if (cache_sb->s_op->remount_fs)
+ sops->remount_fs = smfs_sops->remount_fs;
+ if (cache_sb->s_op->umount_begin)
+ sops->umount_begin = smfs_sops->umount_begin;
+ if (cache_sb->s_op->fh_to_dentry)
+ sops->fh_to_dentry = smfs_sops->fh_to_dentry;
+ if (cache_sb->s_op->dentry_to_fh)
+ sops->dentry_to_fh = smfs_sops->dentry_to_fh;
+ if (cache_sb->s_op->show_options)
+ sops->show_options = smfs_sops->show_options;
+
+ /* FIXME-WANGDI we need this method to clear the cache inode. */
+ sops->clear_inode = smfs_sops->clear_inode;
+ sops->read_inode2 = smfs_sops->read_inode2;
+ }
+
+ lock_kernel();
+ smb->smsi_ops_check |= SB_OPS_CHECK;
+ unlock_kernel();
+ return;
+}
+
void sm_set_inode_ops(struct inode *cache_inode, struct inode *inode)
{
- /* XXX now set the correct snap_{file,dir,sym}_iops */
+ struct smfs_super_info *smb = S2SMI(inode->i_sb);
+
+ /* XXX now set the correct sm_{file,dir,sym}_iops */
if (S_ISDIR(inode->i_mode)) {
- inode->i_op = cache_diops(&smfs_operations);
- inode->i_fop = cache_dfops(&smfs_operations);
+ setup_sm_dir_ops(cache_inode, inode,
+ &smfs_dir_iops,
+ &smfs_dir_fops);
+ inode->i_op = cache_diops(smb);
+ inode->i_fop = cache_dfops(smb);
} else if (S_ISREG(inode->i_mode)) {
- if (!cache_fiops(&smfs_operations)) {
- setup_sm_file_ops(cache_inode, inode,
- &smfs_file_iops,
- &smfs_file_fops,
- &smfs_file_aops);
- }
+ setup_sm_file_ops(cache_inode, inode,
+ &smfs_file_iops,
+ &smfs_file_fops);
CDEBUG(D_INODE, "inode %lu, i_op at %p\n",
inode->i_ino, inode->i_op);
- inode->i_fop = cache_ffops(&smfs_operations);
- inode->i_op = cache_fiops(&smfs_operations);
- if (inode->i_mapping)
- inode->i_mapping->a_ops = cache_faops(&smfs_operations);
-
- }
- else if (S_ISLNK(inode->i_mode)) {
- if (!cache_siops(&smfs_operations)) {
- setup_sm_symlink_ops(cache_inode, inode,
- &smfs_sym_iops, &smfs_sym_fops);
- }
- inode->i_op = cache_siops(&smfs_operations);
- inode->i_fop = cache_sfops(&smfs_operations);
+ inode->i_fop = cache_ffops(smb);
+ inode->i_op = cache_fiops(smb);
+
+ } else if (S_ISLNK(inode->i_mode)) {
+ setup_sm_symlink_ops(cache_inode, inode,
+ &smfs_sym_iops,
+ &smfs_sym_fops);
+ inode->i_op = cache_siops(smb);
+ inode->i_fop = cache_sfops(smb);
CDEBUG(D_INODE, "inode %lu, i_op at %p\n",
inode->i_ino, inode->i_op);
}
}
-void sm_set_sb_ops (struct super_block *cache_sb,
- struct super_block *sb)
+
+void sm_set_sb_ops(struct super_block *cache_sb, struct super_block *sb)
+{
+ struct smfs_super_info *smb;
+
+ smb = S2SMI(sb);
+
+ setup_sm_sb_ops(cache_sb, sb, &smfs_super_ops);
+
+ sb->s_op = cache_sops(smb);
+ return;
+}
+struct smfs_hook_ops *smfs_alloc_hook_ops(char *name, smfs_hook_func pre_hook,
+ smfs_hook_func post_hook)
+{
+ struct smfs_hook_ops *smfs_hops = NULL;
+
+ ENTRY;
+ OBD_ALLOC(smfs_hops, sizeof(struct smfs_hook_ops));
+
+ if (!smfs_hops)
+ RETURN(NULL);
+
+ OBD_ALLOC(smfs_hops->smh_name, strlen(name) + 1);
+
+ if (!smfs_hops->smh_name) {
+ OBD_FREE(smfs_hops, sizeof(struct smfs_hook_ops));
+ RETURN(NULL);
+ }
+
+ memcpy(smfs_hops->smh_name, name, strlen(name));
+
+ smfs_hops->smh_post_op = post_hook;
+ smfs_hops->smh_pre_op = pre_hook;
+
+ RETURN(smfs_hops);
+}
+
+void smfs_free_hook_ops(struct smfs_hook_ops *hops)
{
- struct smfs_super_info *smb;
-
- smb = S2SMI(sb);
-
- if (smb->ops_check & SB_OPS_CHECK)
- return;
- smb->ops_check |= SB_OPS_CHECK;
- if (!cache_sops(&smfs_operations)) {
- setup_sm_sb_ops(cache_sb, sb, &smfs_super_ops);
- }
- sb->s_op = cache_sops(&smfs_operations);
- return;
+ if (hops) {
+ if (hops->smh_name){
+ OBD_FREE(hops->smh_name, strlen(hops->smh_name) + 1);
+ }
+ OBD_FREE(hops, sizeof(struct smfs_hook_ops));
+ }
}
+int smfs_register_hook_ops(struct super_block *sb,
+ struct smfs_hook_ops *smh_ops)
+{
+ struct smfs_super_info *smb = S2SMI(sb);
+ struct list_head *hlist = &smb->smsi_hook_list;
+ struct list_head *p;
+ ENTRY;
+
+ list_for_each(p, hlist) {
+ struct smfs_hook_ops *found;
+ found = list_entry(p, struct smfs_hook_ops, smh_list);
+ if (!strcmp(found->smh_name, smh_ops->smh_name)) {
+ CWARN("hook ops %s list reregister\n", smh_ops->smh_name);
+ RETURN(0);
+ }
+ }
+ list_add(&smh_ops->smh_list, hlist);
+ RETURN(0);
+}
+struct smfs_hook_ops *smfs_unregister_hook_ops(struct super_block *sb,
+ char *name)
+{
+ struct smfs_super_info *smb = S2SMI(sb);
+ struct list_head *hlist = &smb->smsi_hook_list;
+ struct list_head *p;
+ ENTRY;
+
+ list_for_each(p, hlist) {
+ struct smfs_hook_ops *found;
+
+ found = list_entry(p, typeof(*found), smh_list);
+ if (!memcmp(found->smh_name, name, strlen(name))) {
+ list_del(p);
+ RETURN(found);
+ }
+ }
+ RETURN(NULL);
+}
+