+#include <linux/lustre_patchless_compat.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
+struct ll_iattr {
+ struct iattr iattr;
+ unsigned int ia_attr_flags;
+};
+#else
+#define ll_iattr iattr
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
+
+#ifndef HAVE_SET_FS_PWD
+static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
+ struct dentry *dentry)
+{
+ struct dentry *old_pwd;
+ struct vfsmount *old_pwdmnt;
+
+ write_lock(&fs->lock);
+ old_pwd = fs->pwd;
+ old_pwdmnt = fs->pwdmnt;
+ fs->pwdmnt = mntget(mnt);
+ fs->pwd = dget(dentry);
+ write_unlock(&fs->lock);
+
+ if (old_pwd) {
+ dput(old_pwd);
+ mntput(old_pwdmnt);
+ }
+}
+#else
+#define ll_set_fs_pwd set_fs_pwd
+#endif /* HAVE_SET_FS_PWD */
+
+/*
+ * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
+ * ATTR_* attributes (see bug 13828)
+ */
+#define ATTR_BLOCKS (1 << 27)
+
+#if HAVE_INODE_I_MUTEX
+#define UNLOCK_INODE_MUTEX(inode) do {mutex_unlock(&(inode)->i_mutex); } while(0)
+#define LOCK_INODE_MUTEX(inode) do {mutex_lock(&(inode)->i_mutex); } while(0)
+#define TRYLOCK_INODE_MUTEX(inode) mutex_trylock(&(inode)->i_mutex)
+#else
+#define UNLOCK_INODE_MUTEX(inode) do {up(&(inode)->i_sem); } while(0)
+#define LOCK_INODE_MUTEX(inode) do {down(&(inode)->i_sem); } while(0)
+#define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
+#endif /* HAVE_INODE_I_MUTEX */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
+#define d_child d_u.d_child
+#define d_rcu d_u.d_rcu
+#endif
+
+#ifdef HAVE_DQUOTOFF_MUTEX
+#define UNLOCK_DQONOFF_MUTEX(dqopt) do {mutex_unlock(&(dqopt)->dqonoff_mutex); } while(0)
+#define LOCK_DQONOFF_MUTEX(dqopt) do {mutex_lock(&(dqopt)->dqonoff_mutex); } while(0)
+#else
+#define UNLOCK_DQONOFF_MUTEX(dqopt) do {up(&(dqopt)->dqonoff_sem); } while(0)
+#define LOCK_DQONOFF_MUTEX(dqopt) do {down(&(dqopt)->dqonoff_sem); } while(0)
+#endif /* HAVE_DQUOTOFF_MUTEX */
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4)
+#define NGROUPS_SMALL NGROUPS
+#define NGROUPS_PER_BLOCK ((int)(EXEC_PAGESIZE / sizeof(gid_t)))
+
+struct group_info {
+ int ngroups;
+ atomic_t usage;
+ gid_t small_block[NGROUPS_SMALL];
+ int nblocks;
+ gid_t *blocks[0];
+};
+#define current_ngroups current->ngroups
+#define current_groups current->groups
+
+struct group_info *groups_alloc(int gidsetsize);
+void groups_free(struct group_info *ginfo);
+#else /* >= 2.6.4 */
+
+#define current_ngroups current->group_info->ngroups
+#define current_groups current->group_info->small_block
+
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) */
+
+#ifndef page_private
+#define page_private(page) ((page)->private)
+#define set_page_private(page, v) ((page)->private = (v))
+#endif
+
+#ifndef HAVE_GFP_T
+#define gfp_t int
+#endif
+
+#define lock_dentry(___dentry) spin_lock(&(___dentry)->d_lock)
+#define unlock_dentry(___dentry) spin_unlock(&(___dentry)->d_lock)
+
+#define lock_24kernel() do {} while (0)
+#define unlock_24kernel() do {} while (0)
+#define ll_kernel_locked() kernel_locked()