X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fkernel_patches%2Fpatches%2Fvfs_intent-2.4.20-hp.patch;h=cf07450369c0f5c228c84e12be590c454589619c;hp=082b8b713540657bd30cd97f5e92bd4f50ac6e3f;hb=9c9c56e49212f4a005916b8abf942d6de267579d;hpb=19d0394c22ea5927ec085fa9161f79f2537d58ef

diff --git a/lustre/kernel_patches/patches/vfs_intent-2.4.20-hp.patch b/lustre/kernel_patches/patches/vfs_intent-2.4.20-hp.patch
index 082b8b7..cf07450 100644
--- a/lustre/kernel_patches/patches/vfs_intent-2.4.20-hp.patch
+++ b/lustre/kernel_patches/patches/vfs_intent-2.4.20-hp.patch
@@ -13,9 +13,52 @@
  kernel/ksyms.c            |    1 
  13 files changed, 591 insertions(+), 133 deletions(-)
 
---- linux-2.4.20-hp4-pnnl13/fs/exec.c~vfs_intent-2.4.20-hp	2003-09-13 15:19:27.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/exec.c	2003-09-14 17:33:51.000000000 +0400
-@@ -116,8 +116,10 @@ asmlinkage long sys_uselib(const char * 
+Index: linux/fs/dcache.c
+===================================================================
+--- linux.orig/fs/dcache.c	Thu Nov 28 18:53:15 2002
++++ linux/fs/dcache.c	Wed Mar 17 13:11:25 2004
+@@ -181,6 +181,13 @@
+ 		spin_unlock(&dcache_lock);
+ 		return 0;
+ 	}
++
++	/* network invalidation by Lustre */
++	if (dentry->d_flags & DCACHE_LUSTRE_INVALID) {
++		spin_unlock(&dcache_lock);
++		return 0;
++	}
++
+ 	/*
+ 	 * Check whether to do a partial shrink_dcache
+ 	 * to get rid of unused child entries.
+@@ -830,13 +837,19 @@
+  * Adds a dentry to the hash according to its name.
+  */
+  
+-void d_rehash(struct dentry * entry)
++void __d_rehash(struct dentry * entry, int lock)
+ {
+ 	struct list_head *list = d_hash(entry->d_parent, entry->d_name.hash);
+ 	if (!list_empty(&entry->d_hash)) BUG();
+-	spin_lock(&dcache_lock);
++	if (lock) spin_lock(&dcache_lock);
+ 	list_add(&entry->d_hash, list);
+-	spin_unlock(&dcache_lock);
++	if (lock) spin_unlock(&dcache_lock);
++}
++EXPORT_SYMBOL(__d_rehash);
++
++void d_rehash(struct dentry * entry)
++{
++	__d_rehash(entry, 1);
+ }
+ 
+ #define do_switch(x,y) do { \
+Index: linux/fs/exec.c
+===================================================================
+--- linux.orig/fs/exec.c	Wed Mar 17 13:00:38 2004
++++ linux/fs/exec.c	Wed Mar 17 13:11:25 2004
+@@ -115,8 +115,10 @@
  	struct file * file;
  	struct nameidata nd;
  	int error;
@@ -27,7 +70,7 @@
  	if (error)
  		goto out;
  
-@@ -129,7 +131,8 @@ asmlinkage long sys_uselib(const char * 
+@@ -128,7 +130,8 @@
  	if (error)
  		goto exit;
  
@@ -37,7 +80,7 @@
  	error = PTR_ERR(file);
  	if (IS_ERR(file))
  		goto out;
-@@ -372,8 +375,10 @@ struct file *open_exec(const char *name)
+@@ -371,8 +374,10 @@
  	struct inode *inode;
  	struct file *file;
  	int err = 0;
@@ -49,7 +92,7 @@
  	file = ERR_PTR(err);
  	if (!err) {
  		inode = nd.dentry->d_inode;
-@@ -385,7 +390,8 @@ struct file *open_exec(const char *name)
+@@ -384,7 +389,8 @@
  				err = -EACCES;
  			file = ERR_PTR(err);
  			if (!err) {
@@ -59,7 +102,7 @@
  				if (!IS_ERR(file)) {
  					err = deny_write_access(file);
  					if (err) {
-@@ -397,6 +403,7 @@ out:
+@@ -396,6 +402,7 @@
  				return file;
  			}
  		}
@@ -67,7 +110,7 @@
  		path_release(&nd);
  	}
  	goto out;
-@@ -1128,7 +1135,7 @@ int do_coredump(long signr, struct pt_re
+@@ -1120,7 +1127,7 @@
  		goto close_fail;
  	if (!file->f_op->write)
  		goto close_fail;
@@ -76,162 +119,10 @@
  		goto close_fail;
  
  	retval = binfmt->core_dump(signr, regs, file);
---- linux-2.4.20-hp4-pnnl13/fs/dcache.c~vfs_intent-2.4.20-hp	2002-11-29 02:53:15.000000000 +0300
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/dcache.c	2003-09-14 17:33:51.000000000 +0400
-@@ -181,6 +181,13 @@ int d_invalidate(struct dentry * dentry)
- 		spin_unlock(&dcache_lock);
- 		return 0;
- 	}
-+
-+	/* network invalidation by Lustre */
-+	if (dentry->d_flags & DCACHE_LUSTRE_INVALID) {
-+		spin_unlock(&dcache_lock);
-+		return 0;
-+	}
-+
- 	/*
- 	 * Check whether to do a partial shrink_dcache
- 	 * to get rid of unused child entries.
-@@ -830,13 +837,19 @@ void d_delete(struct dentry * dentry)
-  * Adds a dentry to the hash according to its name.
-  */
-  
--void d_rehash(struct dentry * entry)
-+void __d_rehash(struct dentry * entry, int lock)
- {
- 	struct list_head *list = d_hash(entry->d_parent, entry->d_name.hash);
- 	if (!list_empty(&entry->d_hash)) BUG();
--	spin_lock(&dcache_lock);
-+	if (lock) spin_lock(&dcache_lock);
- 	list_add(&entry->d_hash, list);
--	spin_unlock(&dcache_lock);
-+	if (lock) spin_unlock(&dcache_lock);
-+}
-+EXPORT_SYMBOL(__d_rehash);
-+
-+void d_rehash(struct dentry * entry)
-+{
-+	__d_rehash(entry, 1);
- }
- 
- #define do_switch(x,y) do { \
---- linux-2.4.20-hp4-pnnl13/fs/namespace.c~vfs_intent-2.4.20-hp	2002-11-29 02:53:15.000000000 +0300
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/namespace.c	2003-09-14 17:33:51.000000000 +0400
-@@ -99,6 +99,7 @@ static void detach_mnt(struct vfsmount *
- {
- 	old_nd->dentry = mnt->mnt_mountpoint;
- 	old_nd->mnt = mnt->mnt_parent;
-+	UNPIN(old_nd->dentry, old_nd->mnt, 1);
- 	mnt->mnt_parent = mnt;
- 	mnt->mnt_mountpoint = mnt->mnt_root;
- 	list_del_init(&mnt->mnt_child);
-@@ -110,6 +111,7 @@ static void attach_mnt(struct vfsmount *
- {
- 	mnt->mnt_parent = mntget(nd->mnt);
- 	mnt->mnt_mountpoint = dget(nd->dentry);
-+	PIN(nd->dentry, nd->mnt, 1);
- 	list_add(&mnt->mnt_hash, mount_hashtable+hash(nd->mnt, nd->dentry));
- 	list_add(&mnt->mnt_child, &nd->mnt->mnt_mounts);
- 	nd->dentry->d_mounted++;
-@@ -485,14 +487,17 @@ static int do_loopback(struct nameidata 
- {
- 	struct nameidata old_nd;
- 	struct vfsmount *mnt = NULL;
-+	struct lookup_intent it = { .it_op = IT_GETATTR };
- 	int err = mount_is_safe(nd);
- 	if (err)
- 		return err;
- 	if (!old_name || !*old_name)
- 		return -EINVAL;
--	err = path_lookup(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd);
--	if (err)
-+	err = path_lookup_it(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd, &it);
-+	if (err) {
-+		intent_release(&it);
- 		return err;
-+	}
- 
- 	down_write(&current->namespace->sem);
- 	err = -EINVAL;
-@@ -515,6 +520,7 @@ static int do_loopback(struct nameidata 
- 	}
- 
- 	up_write(&current->namespace->sem);
-+	intent_release(&it);
- 	path_release(&old_nd);
- 	return err;
- }
-@@ -698,6 +704,7 @@ long do_mount(char * dev_name, char * di
- 		  unsigned long flags, void *data_page)
- {
- 	struct nameidata nd;
-+	struct lookup_intent it = { .it_op = IT_GETATTR };
- 	int retval = 0;
- 	int mnt_flags = 0;
- 
-@@ -722,10 +729,11 @@ long do_mount(char * dev_name, char * di
- 	flags &= ~(MS_NOSUID|MS_NOEXEC|MS_NODEV);
- 
- 	/* ... and get the mountpoint */
--	retval = path_lookup(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
--	if (retval)
-+	retval = path_lookup_it(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
-+	if (retval) {
-+		intent_release(&it);
- 		return retval;
--
-+	}
- 	if (flags & MS_REMOUNT)
- 		retval = do_remount(&nd, flags & ~MS_REMOUNT, mnt_flags,
- 				    data_page);
-@@ -736,6 +744,8 @@ long do_mount(char * dev_name, char * di
- 	else
- 		retval = do_add_mount(&nd, type_page, flags, mnt_flags,
- 				      dev_name, data_page);
-+
-+	intent_release(&it);
- 	path_release(&nd);
- 	return retval;
- }
-@@ -901,6 +911,8 @@ asmlinkage long sys_pivot_root(const cha
- {
- 	struct vfsmount *tmp;
- 	struct nameidata new_nd, old_nd, parent_nd, root_parent, user_nd;
-+	struct lookup_intent new_it = { .it_op = IT_GETATTR };
-+	struct lookup_intent old_it = { .it_op = IT_GETATTR };
- 	int error;
- 
- 	if (!capable(CAP_SYS_ADMIN))
-@@ -908,14 +920,14 @@ asmlinkage long sys_pivot_root(const cha
- 
- 	lock_kernel();
- 
--	error = __user_walk(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd);
-+	error = __user_walk_it(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd, &new_it);
- 	if (error)
- 		goto out0;
- 	error = -EINVAL;
- 	if (!check_mnt(new_nd.mnt))
- 		goto out1;
- 
--	error = __user_walk(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd);
-+	error = __user_walk_it(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd, &old_it);
- 	if (error)
- 		goto out1;
- 
-@@ -970,8 +982,10 @@ out2:
- 	up(&old_nd.dentry->d_inode->i_zombie);
- 	up_write(&current->namespace->sem);
- 	path_release(&user_nd);
-+	intent_release(&old_it);
- 	path_release(&old_nd);
- out1:
-+	intent_release(&new_it);
- 	path_release(&new_nd);
- out0:
- 	unlock_kernel();
---- linux-2.4.20-hp4-pnnl13/fs/namei.c~vfs_intent-2.4.20-hp	2003-09-13 15:19:23.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/namei.c	2003-09-14 17:33:51.000000000 +0400
+Index: linux/fs/namei.c
+===================================================================
+--- linux.orig/fs/namei.c	Wed Mar 17 13:00:37 2004
++++ linux/fs/namei.c	Wed Mar 17 13:12:31 2004
 @@ -94,6 +94,13 @@
   * XEmacs seems to be relying on it...
   */
@@ -246,7 +137,7 @@
  /* In order to reduce some races, while at the same time doing additional
   * checking and hopefully speeding things up, we copy filenames to the
   * kernel data space before using them..
-@@ -260,10 +267,19 @@ void path_release(struct nameidata *nd)
+@@ -260,10 +267,19 @@
   * Internal lookup() using the new generic dcache.
   * SMP-safe
   */
@@ -257,7 +148,7 @@
  	struct dentry * dentry = d_lookup(parent, name);
  
 +	if (dentry && dentry->d_op && dentry->d_op->d_revalidate_it) {
-+		if (!dentry->d_op->d_revalidate_it(dentry, flags, it) &&
++		if (!dentry->d_op->d_revalidate_it(dentry, flags, NULL, it) &&
 +		    !d_invalidate(dentry)) {
 +			dput(dentry);
 +			dentry = NULL;
@@ -267,7 +158,7 @@
  	if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
  		if (!dentry->d_op->d_revalidate(dentry, flags) && !d_invalidate(dentry)) {
  			dput(dentry);
-@@ -281,11 +297,15 @@ static struct dentry * cached_lookup(str
+@@ -281,11 +297,15 @@
   * make sure that nobody added the entry to the dcache in the meantime..
   * SMP-safe
   */
@@ -284,22 +175,22 @@
  	down(&dir->i_sem);
  	/*
  	 * First re-do the cached lookup just in case it was created
-@@ -300,6 +320,9 @@ static struct dentry * real_lookup(struc
+@@ -300,6 +320,9 @@
  		result = ERR_PTR(-ENOMEM);
  		if (dentry) {
  			lock_kernel();
 +			if (dir->i_op->lookup_it)
-+				result = dir->i_op->lookup_it(dir, dentry, it, flags);
++				result = dir->i_op->lookup_it(dir, dentry, NULL, it, flags);
 +			else
  			result = dir->i_op->lookup(dir, dentry);
  			unlock_kernel();
  			if (result)
-@@ -321,6 +344,15 @@ static struct dentry * real_lookup(struc
+@@ -321,6 +344,15 @@
  			dput(result);
  			result = ERR_PTR(-ENOENT);
  		}
 +	} else if (result->d_op && result->d_op->d_revalidate_it) {
-+		if (!result->d_op->d_revalidate_it(result, flags, it) &&
++		if (!result->d_op->d_revalidate_it(result, flags, NULL, it) &&
 +		    !d_invalidate(result)) {
 +			dput(result);
 +			if (counter > 10)
@@ -310,7 +201,7 @@
  	}
  	return result;
  }
-@@ -332,7 +364,8 @@ static struct dentry * real_lookup(struc
+@@ -332,7 +364,8 @@
   * Without that kind of total limit, nasty chains of consecutive
   * symlinks can cause almost arbitrarily long lookups. 
   */
@@ -320,7 +211,7 @@
  {
  	int err;
  	if (current->link_count >= 5)
-@@ -346,10 +379,18 @@ static inline int do_follow_link(struct 
+@@ -346,10 +379,18 @@
  	current->link_count++;
  	current->total_link_count++;
  	UPDATE_ATIME(dentry->d_inode);
@@ -339,7 +230,7 @@
  	path_release(nd);
  	return -ELOOP;
  }
-@@ -379,15 +420,26 @@ int follow_up(struct vfsmount **mnt, str
+@@ -379,15 +420,26 @@
  	return __follow_up(mnt, dentry);
  }
  
@@ -367,7 +258,7 @@
  		dput(*dentry);
  		mntput(mounted->mnt_parent);
  		*dentry = dget(mounted->mnt_root);
-@@ -399,7 +451,7 @@ static inline int __follow_down(struct v
+@@ -399,7 +451,7 @@
  
  int follow_down(struct vfsmount **mnt, struct dentry **dentry)
  {
@@ -376,7 +267,7 @@
  }
   
  static inline void follow_dotdot(struct nameidata *nd)
-@@ -435,7 +487,7 @@ static inline void follow_dotdot(struct 
+@@ -435,7 +487,7 @@
  		mntput(nd->mnt);
  		nd->mnt = parent;
  	}
@@ -385,7 +276,7 @@
  		;
  }
  
-@@ -447,7 +499,8 @@ static inline void follow_dotdot(struct 
+@@ -447,7 +499,8 @@
   *
   * We expect 'base' to be positive and a directory.
   */
@@ -395,7 +286,7 @@
  {
  	struct dentry *dentry;
  	struct inode *inode;
-@@ -520,15 +573,15 @@ int link_path_walk(const char * name, st
+@@ -520,15 +573,15 @@
  				break;
  		}
  		/* This does the actual lookups.. */
@@ -414,7 +305,7 @@
  			;
  
  		err = -ENOENT;
-@@ -540,7 +593,7 @@ int link_path_walk(const char * name, st
+@@ -540,7 +593,7 @@
  			goto out_dput;
  
  		if (inode->i_op->follow_link) {
@@ -423,7 +314,7 @@
  			dput(dentry);
  			if (err)
  				goto return_err;
-@@ -556,7 +609,7 @@ int link_path_walk(const char * name, st
+@@ -556,7 +609,7 @@
  			nd->dentry = dentry;
  		}
  		err = -ENOTDIR; 
@@ -432,7 +323,7 @@
  			break;
  		continue;
  		/* here ends the main loop */
-@@ -583,19 +636,19 @@ last_component:
+@@ -583,19 +636,19 @@
  			if (err < 0)
  				break;
  		}
@@ -456,7 +347,7 @@
  			dput(dentry);
  			if (err)
  				goto return_err;
-@@ -609,7 +662,8 @@ last_component:
+@@ -609,7 +662,8 @@
  			goto no_inode;
  		if (lookup_flags & LOOKUP_DIRECTORY) {
  			err = -ENOTDIR; 
@@ -466,33 +357,35 @@
  				break;
  		}
  		goto return_base;
-@@ -633,6 +687,25 @@ return_reval:
+@@ -633,6 +687,27 @@
  		 * Check the cached dentry for staleness.
  		 */
  		dentry = nd->dentry;
 +		if (dentry && dentry->d_op && dentry->d_op->d_revalidate_it) {
 +			err = -ESTALE;
-+			if (!dentry->d_op->d_revalidate_it(dentry, 0, it)) {
++			if (!dentry->d_op->d_revalidate_it(dentry, 0, NULL, it)) {
 +				struct dentry *new;
 +				err = permission(dentry->d_parent->d_inode,
 +						 MAY_EXEC);
 +				if (err)
 +					break;
 +				new = real_lookup(dentry->d_parent,
-+						  &dentry->d_name, 0, NULL);
-+				d_invalidate(dentry);
-+				dput(dentry);
-+				if (IS_ERR(new)) { 
++						  &dentry->d_name, 0, it);
++				if (IS_ERR(new)) {
 +					err = PTR_ERR(new);
 +					break;
 +				}
++				d_invalidate(dentry);
++				dput(dentry);
 +				nd->dentry = new;
 +			}
++			if (!nd->dentry->d_inode)
++				goto no_inode;
 +		} else
  		if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
  			err = -ESTALE;
  			if (!dentry->d_op->d_revalidate(dentry, 0)) {
-@@ -646,15 +719,28 @@ out_dput:
+@@ -646,15 +721,28 @@
  		dput(dentry);
  		break;
  	}
@@ -522,7 +415,7 @@
  }
  
  /* SMP-safe */
-@@ -739,6 +825,17 @@ walk_init_root(const char *name, struct 
+@@ -739,6 +827,17 @@
  }
  
  /* SMP-safe */
@@ -540,7 +433,7 @@
  int path_lookup(const char *path, unsigned flags, struct nameidata *nd)
  {
  	int error = 0;
-@@ -753,6 +850,7 @@ int path_init(const char *name, unsigned
+@@ -753,6 +852,7 @@
  {
  	nd->last_type = LAST_ROOT; /* if there are only slashes... */
  	nd->flags = flags;
@@ -548,7 +441,7 @@
  	if (*name=='/')
  		return walk_init_root(name,nd);
  	read_lock(&current->fs->lock);
-@@ -767,7 +865,8 @@ int path_init(const char *name, unsigned
+@@ -767,7 +867,8 @@
   * needs parent already locked. Doesn't follow mounts.
   * SMP-safe.
   */
@@ -558,7 +451,7 @@
  {
  	struct dentry * dentry;
  	struct inode *inode;
-@@ -790,13 +889,16 @@ struct dentry * lookup_hash(struct qstr 
+@@ -790,13 +891,16 @@
  			goto out;
  	}
  
@@ -571,12 +464,12 @@
  			goto out;
  		lock_kernel();
 +		if (inode->i_op->lookup_it)
-+			dentry = inode->i_op->lookup_it(inode, new, it, 0);
++			dentry = inode->i_op->lookup_it(inode, new, NULL, it, 0);
 +		else
  		dentry = inode->i_op->lookup(inode, new);
  		unlock_kernel();
  		if (!dentry)
-@@ -808,6 +910,12 @@ out:
+@@ -808,6 +912,12 @@
  	return dentry;
  }
  
@@ -589,7 +482,7 @@
  /* SMP-safe */
  struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
  {
-@@ -829,7 +937,7 @@ struct dentry * lookup_one_len(const cha
+@@ -829,7 +939,7 @@
  	}
  	this.hash = end_name_hash(hash);
  
@@ -598,7 +491,7 @@
  access:
  	return ERR_PTR(-EACCES);
  }
-@@ -860,6 +968,23 @@ int __user_walk(const char *name, unsign
+@@ -860,6 +970,23 @@
  	return err;
  }
  
@@ -622,7 +515,7 @@
  /*
   * It's inline, so penalty for filesystems that don't use sticky bit is
   * minimal.
-@@ -955,7 +1080,8 @@ static inline int lookup_flags(unsigned 
+@@ -955,7 +1082,8 @@
  	return retval;
  }
  
@@ -632,7 +525,7 @@
  {
  	int error;
  
-@@ -968,12 +1094,15 @@ int vfs_create(struct inode *dir, struct
+@@ -968,12 +1096,15 @@
  		goto exit_lock;
  
  	error = -EACCES;	/* shouldn't it be ENOSYS? */
@@ -650,7 +543,7 @@
  	unlock_kernel();
  exit_lock:
  	up(&dir->i_zombie);
-@@ -982,6 +1111,11 @@ exit_lock:
+@@ -982,6 +1113,11 @@
  	return error;
  }
  
@@ -662,7 +555,7 @@
  /*
   *	open_namei()
   *
-@@ -996,7 +1130,8 @@ exit_lock:
+@@ -996,7 +1132,8 @@
   * for symlinks (where the permissions are checked later).
   * SMP-safe
   */
@@ -672,7 +565,7 @@
  {
  	int acc_mode, error = 0;
  	struct inode *inode;
-@@ -1006,11 +1141,14 @@ int open_namei(const char * pathname, in
+@@ -1006,11 +1143,14 @@
  
  	acc_mode = ACC_MODE(flag);
  
@@ -688,7 +581,7 @@
  		if (error)
  			return error;
  		dentry = nd->dentry;
-@@ -1020,6 +1158,10 @@ int open_namei(const char * pathname, in
+@@ -1020,6 +1160,10 @@
  	/*
  	 * Create - we need to know the parent.
  	 */
@@ -699,7 +592,7 @@
  	error = path_lookup(pathname, LOOKUP_PARENT, nd);
  	if (error)
  		return error;
-@@ -1035,7 +1177,7 @@ int open_namei(const char * pathname, in
+@@ -1035,7 +1179,7 @@
  
  	dir = nd->dentry;
  	down(&dir->d_inode->i_sem);
@@ -708,7 +601,7 @@
  
  do_last:
  	error = PTR_ERR(dentry);
-@@ -1044,11 +1186,12 @@ do_last:
+@@ -1044,11 +1188,12 @@
  		goto exit;
  	}
  
@@ -722,7 +615,7 @@
  		up(&dir->d_inode->i_sem);
  		dput(nd->dentry);
  		nd->dentry = dentry;
-@@ -1073,7 +1216,7 @@ do_last:
+@@ -1073,7 +1218,7 @@
  		error = -ELOOP;
  		if (flag & O_NOFOLLOW)
  			goto exit_dput;
@@ -731,7 +624,7 @@
  	}
  	error = -ENOENT;
  	if (!dentry->d_inode)
-@@ -1152,7 +1295,7 @@ ok:
+@@ -1152,7 +1297,7 @@
  		if (!error) {
  			DQUOT_INIT(inode);
  			
@@ -740,7 +633,7 @@
  		}
  		put_write_access(inode);
  		if (error)
-@@ -1164,8 +1307,10 @@ ok:
+@@ -1164,8 +1309,10 @@
  	return 0;
  
  exit_dput:
@@ -751,7 +644,7 @@
  	path_release(nd);
  	return error;
  
-@@ -1184,7 +1329,16 @@ do_link:
+@@ -1184,7 +1331,16 @@
  	 * are done. Procfs-like symlinks just set LAST_BIND.
  	 */
  	UPDATE_ATIME(dentry->d_inode);
@@ -768,7 +661,7 @@
  	dput(dentry);
  	if (error)
  		return error;
-@@ -1206,13 +1360,20 @@ do_link:
+@@ -1206,13 +1362,20 @@
  	}
  	dir = nd->dentry;
  	down(&dir->d_inode->i_sem);
@@ -786,12 +679,12 @@
 +
  /* SMP-safe */
 -static struct dentry *lookup_create(struct nameidata *nd, int is_dir)
-+static struct dentry *lookup_create(struct nameidata *nd, int is_dir,
++struct dentry *lookup_create(struct nameidata *nd, int is_dir,
 +				    struct lookup_intent *it)
  {
  	struct dentry *dentry;
  
-@@ -1220,7 +1381,7 @@ static struct dentry *lookup_create(stru
+@@ -1220,7 +1383,7 @@
  	dentry = ERR_PTR(-EEXIST);
  	if (nd->last_type != LAST_NORM)
  		goto fail;
@@ -800,12 +693,16 @@
  	if (IS_ERR(dentry))
  		goto fail;
  	if (!is_dir && nd->last.name[nd->last.len] && !dentry->d_inode)
-@@ -1276,7 +1437,16 @@ asmlinkage long sys_mknod(const char * f
+@@ -1276,7 +1439,20 @@
  	error = path_lookup(tmp, LOOKUP_PARENT, &nd);
  	if (error)
  		goto out;
 -	dentry = lookup_create(&nd, 0);
 +
++	if (nd.last_type != LAST_NORM) {
++		error = -EEXIST;
++		goto out2;
++	}
 +	if (nd.dentry->d_inode->i_op->mknod_raw) {
 +		struct inode_operations *op = nd.dentry->d_inode->i_op;
 +		error = op->mknod_raw(&nd, mode, dev);
@@ -818,7 +715,7 @@
  	error = PTR_ERR(dentry);
  
  	if (!IS_POSIXACL(nd.dentry->d_inode))
-@@ -1298,6 +1468,7 @@ asmlinkage long sys_mknod(const char * f
+@@ -1298,6 +1474,7 @@
  		dput(dentry);
  	}
  	up(&nd.dentry->d_inode->i_sem);
@@ -826,11 +723,15 @@
  	path_release(&nd);
  out:
  	putname(tmp);
-@@ -1345,7 +1516,14 @@ asmlinkage long sys_mkdir(const char * p
+@@ -1345,7 +1522,18 @@
  		error = path_lookup(tmp, LOOKUP_PARENT, &nd);
  		if (error)
  			goto out;
 -		dentry = lookup_create(&nd, 1);
++		if (nd.last_type != LAST_NORM) {
++			error = -EEXIST;
++			goto out2;
++		}
 +		if (nd.dentry->d_inode->i_op->mkdir_raw) {
 +			struct inode_operations *op = nd.dentry->d_inode->i_op;
 +			error = op->mkdir_raw(&nd, mode);
@@ -842,7 +743,7 @@
  		error = PTR_ERR(dentry);
  		if (!IS_ERR(dentry)) {
  			if (!IS_POSIXACL(nd.dentry->d_inode))
-@@ -1354,6 +1532,7 @@ asmlinkage long sys_mkdir(const char * p
+@@ -1354,6 +1542,7 @@
  			dput(dentry);
  		}
  		up(&nd.dentry->d_inode->i_sem);
@@ -850,7 +751,7 @@
  		path_release(&nd);
  out:
  		putname(tmp);
-@@ -1454,8 +1633,16 @@ asmlinkage long sys_rmdir(const char * p
+@@ -1454,8 +1643,16 @@
  			error = -EBUSY;
  			goto exit1;
  	}
@@ -868,7 +769,7 @@
  	error = PTR_ERR(dentry);
  	if (!IS_ERR(dentry)) {
  		error = vfs_rmdir(nd.dentry->d_inode, dentry);
-@@ -1513,8 +1700,15 @@ asmlinkage long sys_unlink(const char * 
+@@ -1513,8 +1710,15 @@
  	error = -EISDIR;
  	if (nd.last_type != LAST_NORM)
  		goto exit1;
@@ -885,11 +786,15 @@
  	error = PTR_ERR(dentry);
  	if (!IS_ERR(dentry)) {
  		/* Why not before? Because we want correct error value */
-@@ -1581,15 +1775,23 @@ asmlinkage long sys_symlink(const char *
+@@ -1581,15 +1785,27 @@
  		error = path_lookup(to, LOOKUP_PARENT, &nd);
  		if (error)
  			goto out;
 -		dentry = lookup_create(&nd, 0);
++		if (nd.last_type != LAST_NORM) {
++			error = -EEXIST;
++			goto out2;
++		}
 +		if (nd.dentry->d_inode->i_op->symlink_raw) {
 +			struct inode_operations *op = nd.dentry->d_inode->i_op;
 +			error = op->symlink_raw(&nd, from);
@@ -911,11 +816,15 @@
  		putname(to);
  	}
  	putname(from);
-@@ -1665,7 +1867,14 @@ asmlinkage long sys_link(const char * ol
+@@ -1665,7 +1881,18 @@
  		error = -EXDEV;
  		if (old_nd.mnt != nd.mnt)
  			goto out_release;
 -		new_dentry = lookup_create(&nd, 0);
++		if (nd.last_type != LAST_NORM) {
++			error = -EEXIST;
++			goto out_release;
++		}
 +		if (nd.dentry->d_inode->i_op->link_raw) {
 +			struct inode_operations *op = nd.dentry->d_inode->i_op;
 +			error = op->link_raw(&old_nd, &nd);
@@ -927,7 +836,7 @@
  		error = PTR_ERR(new_dentry);
  		if (!IS_ERR(new_dentry)) {
  			error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
-@@ -1709,7 +1918,7 @@ exit:
+@@ -1709,7 +1936,7 @@
   *	   locking].
   */
  int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
@@ -936,7 +845,7 @@
  {
  	int error;
  	struct inode *target;
-@@ -1788,7 +1997,7 @@ out_unlock:
+@@ -1788,7 +2015,7 @@
  }
  
  int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
@@ -945,7 +854,7 @@
  {
  	int error;
  
-@@ -1876,9 +2085,18 @@ static inline int do_rename(const char *
+@@ -1876,9 +2103,18 @@
  	if (newnd.last_type != LAST_NORM)
  		goto exit2;
  
@@ -965,7 +874,7 @@
  	error = PTR_ERR(old_dentry);
  	if (IS_ERR(old_dentry))
  		goto exit3;
-@@ -1894,16 +2112,16 @@ static inline int do_rename(const char *
+@@ -1894,16 +2130,16 @@
  		if (newnd.last.name[newnd.last.len])
  			goto exit4;
  	}
@@ -984,7 +893,7 @@
  	dput(new_dentry);
  exit4:
  	dput(old_dentry);
-@@ -1954,20 +2172,28 @@ out:
+@@ -1954,20 +2190,28 @@
  }
  
  static inline int
@@ -1015,7 +924,7 @@
  out:
  	if (current->link_count || res || nd->last_type!=LAST_NORM)
  		return res;
-@@ -1989,7 +2215,13 @@ fail:
+@@ -1989,7 +2233,13 @@
  
  int vfs_follow_link(struct nameidata *nd, const char *link)
  {
@@ -1030,7 +939,7 @@
  }
  
  /* get the link contents into pagecache */
-@@ -2031,7 +2263,7 @@ int page_follow_link(struct dentry *dent
+@@ -2031,7 +2281,7 @@
  {
  	struct page *page = NULL;
  	char *s = page_getlink(dentry, &page);
@@ -1039,8 +948,136 @@
  	if (page) {
  		kunmap(page);
  		page_cache_release(page);
---- linux-2.4.20-hp4-pnnl13/fs/open.c~vfs_intent-2.4.20-hp	2002-11-29 02:53:15.000000000 +0300
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/open.c	2003-09-14 17:33:51.000000000 +0400
+Index: linux/fs/namespace.c
+===================================================================
+--- linux.orig/fs/namespace.c	Thu Nov 28 18:53:15 2002
++++ linux/fs/namespace.c	Wed Mar 17 13:11:25 2004
+@@ -99,6 +99,7 @@
+ {
+ 	old_nd->dentry = mnt->mnt_mountpoint;
+ 	old_nd->mnt = mnt->mnt_parent;
++	UNPIN(old_nd->dentry, old_nd->mnt, 1);
+ 	mnt->mnt_parent = mnt;
+ 	mnt->mnt_mountpoint = mnt->mnt_root;
+ 	list_del_init(&mnt->mnt_child);
+@@ -110,6 +111,7 @@
+ {
+ 	mnt->mnt_parent = mntget(nd->mnt);
+ 	mnt->mnt_mountpoint = dget(nd->dentry);
++	PIN(nd->dentry, nd->mnt, 1);
+ 	list_add(&mnt->mnt_hash, mount_hashtable+hash(nd->mnt, nd->dentry));
+ 	list_add(&mnt->mnt_child, &nd->mnt->mnt_mounts);
+ 	nd->dentry->d_mounted++;
+@@ -286,7 +293,7 @@
+ 	}
+ }
+ 
+-static int do_umount(struct vfsmount *mnt, int flags)
++int do_umount(struct vfsmount *mnt, int flags)
+ {
+ 	struct super_block * sb = mnt->mnt_sb;
+ 	int retval = 0;
+@@ -485,14 +487,17 @@
+ {
+ 	struct nameidata old_nd;
+ 	struct vfsmount *mnt = NULL;
++	struct lookup_intent it = { .it_op = IT_GETATTR };
+ 	int err = mount_is_safe(nd);
+ 	if (err)
+ 		return err;
+ 	if (!old_name || !*old_name)
+ 		return -EINVAL;
+-	err = path_lookup(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd);
+-	if (err)
++	err = path_lookup_it(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd, &it);
++	if (err) {
++		intent_release(&it);
+ 		return err;
++	}
+ 
+ 	down_write(&current->namespace->sem);
+ 	err = -EINVAL;
+@@ -515,6 +520,7 @@
+ 	}
+ 
+ 	up_write(&current->namespace->sem);
++	intent_release(&it);
+ 	path_release(&old_nd);
+ 	return err;
+ }
+@@ -698,6 +704,7 @@
+ 		  unsigned long flags, void *data_page)
+ {
+ 	struct nameidata nd;
++	struct lookup_intent it = { .it_op = IT_GETATTR };
+ 	int retval = 0;
+ 	int mnt_flags = 0;
+ 
+@@ -722,10 +729,11 @@
+ 	flags &= ~(MS_NOSUID|MS_NOEXEC|MS_NODEV);
+ 
+ 	/* ... and get the mountpoint */
+-	retval = path_lookup(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
+-	if (retval)
++	retval = path_lookup_it(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
++	if (retval) {
++		intent_release(&it);
+ 		return retval;
+-
++	}
+ 	if (flags & MS_REMOUNT)
+ 		retval = do_remount(&nd, flags & ~MS_REMOUNT, mnt_flags,
+ 				    data_page);
+@@ -736,6 +744,8 @@
+ 	else
+ 		retval = do_add_mount(&nd, type_page, flags, mnt_flags,
+ 				      dev_name, data_page);
++
++	intent_release(&it);
+ 	path_release(&nd);
+ 	return retval;
+ }
+@@ -901,6 +911,8 @@
+ {
+ 	struct vfsmount *tmp;
+ 	struct nameidata new_nd, old_nd, parent_nd, root_parent, user_nd;
++	struct lookup_intent new_it = { .it_op = IT_GETATTR };
++	struct lookup_intent old_it = { .it_op = IT_GETATTR };
+ 	int error;
+ 
+ 	if (!capable(CAP_SYS_ADMIN))
+@@ -908,14 +920,14 @@
+ 
+ 	lock_kernel();
+ 
+-	error = __user_walk(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd);
++	error = __user_walk_it(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd, &new_it);
+ 	if (error)
+ 		goto out0;
+ 	error = -EINVAL;
+ 	if (!check_mnt(new_nd.mnt))
+ 		goto out1;
+ 
+-	error = __user_walk(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd);
++	error = __user_walk_it(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd, &old_it);
+ 	if (error)
+ 		goto out1;
+ 
+@@ -970,8 +982,10 @@
+ 	up(&old_nd.dentry->d_inode->i_zombie);
+ 	up_write(&current->namespace->sem);
+ 	path_release(&user_nd);
++	intent_release(&old_it);
+ 	path_release(&old_nd);
+ out1:
++	intent_release(&new_it);
+ 	path_release(&new_nd);
+ out0:
+ 	unlock_kernel();
+Index: linux/fs/open.c
+===================================================================
+--- linux.orig/fs/open.c	Thu Nov 28 18:53:15 2002
++++ linux/fs/open.c	Wed Mar 17 13:11:25 2004
 @@ -19,6 +19,8 @@
  #include <asm/uaccess.h>
  
@@ -1050,7 +1087,7 @@
  
  int vfs_statfs(struct super_block *sb, struct statfs *buf)
  {
-@@ -95,9 +97,10 @@ void fd_install(unsigned int fd, struct 
+@@ -95,9 +97,10 @@
  	write_unlock(&files->file_lock);
  }
  
@@ -1062,7 +1099,7 @@
  	int error;
  	struct iattr newattrs;
  
-@@ -108,7 +111,13 @@ int do_truncate(struct dentry *dentry, l
+@@ -108,7 +111,13 @@
  	down(&inode->i_sem);
  	newattrs.ia_size = length;
  	newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
@@ -1077,7 +1114,7 @@
  	up(&inode->i_sem);
  	return error;
  }
-@@ -118,12 +127,13 @@ static inline long do_sys_truncate(const
+@@ -118,12 +127,13 @@
  	struct nameidata nd;
  	struct inode * inode;
  	int error;
@@ -1092,7 +1129,7 @@
  	if (error)
  		goto out;
  	inode = nd.dentry->d_inode;
-@@ -163,11 +173,13 @@ static inline long do_sys_truncate(const
+@@ -163,11 +173,13 @@
  	error = locks_verify_truncate(inode, NULL, length);
  	if (!error) {
  		DQUOT_INIT(inode);
@@ -1107,7 +1144,7 @@
  	path_release(&nd);
  out:
  	return error;
-@@ -215,7 +227,7 @@ static inline long do_sys_ftruncate(unsi
+@@ -215,7 +227,7 @@
  
  	error = locks_verify_truncate(inode, file, length);
  	if (!error)
@@ -1116,7 +1153,7 @@
  out_putf:
  	fput(file);
  out:
-@@ -260,11 +272,13 @@ asmlinkage long sys_utime(char * filenam
+@@ -260,11 +272,13 @@
  	struct inode * inode;
  	struct iattr newattrs;
  
@@ -1131,7 +1168,7 @@
  	error = -EROFS;
  	if (IS_RDONLY(inode))
  		goto dput_and_out;
-@@ -279,11 +293,25 @@ asmlinkage long sys_utime(char * filenam
+@@ -279,11 +293,25 @@
  			goto dput_and_out;
  
  		newattrs.ia_valid |= ATTR_ATIME_SET | ATTR_MTIME_SET;
@@ -1158,7 +1195,7 @@
  	error = notify_change(nd.dentry, &newattrs);
  dput_and_out:
  	path_release(&nd);
-@@ -304,12 +332,14 @@ asmlinkage long sys_utimes(char * filena
+@@ -304,12 +332,14 @@
  	struct inode * inode;
  	struct iattr newattrs;
  
@@ -1174,7 +1211,7 @@
  	error = -EROFS;
  	if (IS_RDONLY(inode))
  		goto dput_and_out;
-@@ -324,7 +354,20 @@ asmlinkage long sys_utimes(char * filena
+@@ -324,7 +354,20 @@
  		newattrs.ia_atime = times[0].tv_sec;
  		newattrs.ia_mtime = times[1].tv_sec;
  		newattrs.ia_valid |= ATTR_ATIME_SET | ATTR_MTIME_SET;
@@ -1196,7 +1233,7 @@
  		if (current->fsuid != inode->i_uid &&
  		    (error = permission(inode,MAY_WRITE)) != 0)
  			goto dput_and_out;
-@@ -347,6 +390,7 @@ asmlinkage long sys_access(const char * 
+@@ -347,6 +390,7 @@
  	int old_fsuid, old_fsgid;
  	kernel_cap_t old_cap;
  	int res;
@@ -1204,7 +1241,7 @@
  
  	if (mode & ~S_IRWXO)	/* where's F_OK, X_OK, W_OK, R_OK? */
  		return -EINVAL;
-@@ -364,13 +408,14 @@ asmlinkage long sys_access(const char * 
+@@ -364,13 +408,14 @@
  	else
  		current->cap_effective = current->cap_permitted;
  
@@ -1220,7 +1257,7 @@
  		path_release(&nd);
  	}
  
-@@ -385,8 +430,9 @@ asmlinkage long sys_chdir(const char * f
+@@ -385,8 +430,9 @@
  {
  	int error;
  	struct nameidata nd;
@@ -1231,7 +1268,7 @@
  	if (error)
  		goto out;
  
-@@ -397,6 +443,7 @@ asmlinkage long sys_chdir(const char * f
+@@ -397,6 +443,7 @@
  	set_fs_pwd(current->fs, nd.mnt, nd.dentry);
  
  dput_and_out:
@@ -1239,7 +1276,7 @@
  	path_release(&nd);
  out:
  	return error;
-@@ -436,9 +483,10 @@ asmlinkage long sys_chroot(const char * 
+@@ -436,9 +483,10 @@
  {
  	int error;
  	struct nameidata nd;
@@ -1252,7 +1289,7 @@
  	if (error)
  		goto out;
  
-@@ -454,39 +502,56 @@ asmlinkage long sys_chroot(const char * 
+@@ -454,39 +502,56 @@
  	set_fs_altroot();
  	error = 0;
  dput_and_out:
@@ -1323,7 +1360,7 @@
  	fput(file);
  out:
  	return err;
-@@ -495,30 +560,14 @@ out:
+@@ -495,30 +560,14 @@
  asmlinkage long sys_chmod(const char * filename, mode_t mode)
  {
  	struct nameidata nd;
@@ -1355,7 +1392,7 @@
  	path_release(&nd);
  out:
  	return error;
-@@ -538,6 +587,20 @@ static int chown_common(struct dentry * 
+@@ -538,6 +587,20 @@
  	error = -EROFS;
  	if (IS_RDONLY(inode))
  		goto out;
@@ -1376,7 +1413,7 @@
  	error = -EPERM;
  	if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
  		goto out;
-@@ -642,6 +705,7 @@ struct file *filp_open(const char * file
+@@ -642,6 +705,7 @@
  {
  	int namei_flags, error;
  	struct nameidata nd;
@@ -1384,7 +1421,7 @@
  
  	namei_flags = flags;
  	if ((namei_flags+1) & O_ACCMODE)
-@@ -649,14 +713,15 @@ struct file *filp_open(const char * file
+@@ -649,14 +713,15 @@
  	if (namei_flags & O_TRUNC)
  		namei_flags |= 2;
  
@@ -1405,7 +1442,7 @@
  {
  	struct file * f;
  	struct inode *inode;
-@@ -693,12 +758,15 @@ struct file *dentry_open(struct dentry *
+@@ -693,12 +758,15 @@
  	}
  
  	if (f->f_op && f->f_op->open) {
@@ -1421,7 +1458,7 @@
  	return f;
  
  cleanup_all:
-@@ -713,11 +781,17 @@ cleanup_all:
+@@ -713,11 +781,17 @@
  cleanup_file:
  	put_filp(f);
  cleanup_dentry:
@@ -1439,9 +1476,25 @@
  /*
   * Find an empty file descriptor entry, and mark it busy.
   */
---- linux-2.4.20-hp4-pnnl13/fs/stat.c~vfs_intent-2.4.20-hp	2001-09-14 03:04:43.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/stat.c	2003-09-14 17:34:07.000000000 +0400
-@@ -17,10 +17,14 @@
+Index: linux/fs/proc/base.c
+===================================================================
+--- linux.orig/fs/proc/base.c	Wed Mar 17 13:00:35 2004
++++ linux/fs/proc/base.c	Wed Mar 17 13:11:25 2004
+@@ -481,6 +481,9 @@
+ 
+ 	error = inode->u.proc_i.op.proc_get_link(inode, &nd->dentry, &nd->mnt);
+ 	nd->last_type = LAST_BIND;
++
++	if (nd->intent != NULL)
++		nd->intent->d.lustre.it_int_flags |= IT_FL_FOLLOWED;
+ out:
+ 	return error;
+ }
+Index: linux/fs/stat.c
+===================================================================
+--- linux.orig/fs/stat.c	Thu Sep 13 19:04:43 2001
++++ linux/fs/stat.c	Wed Mar 17 13:12:31 2004
+@@ -17,10 +17,12 @@
   * Revalidate the inode. This is required for proper NFS attribute caching.
   */
  static __inline__ int
@@ -1450,15 +1503,13 @@
  {
  	struct inode * inode = dentry->d_inode;
 -	if (inode->i_op && inode->i_op->revalidate)
-+	if (!inode)
-+		return -ENOENT;
 +	if (inode->i_op && inode->i_op->revalidate_it)
 +		return inode->i_op->revalidate_it(dentry, it);
 +	else if (inode->i_op && inode->i_op->revalidate)
  		return inode->i_op->revalidate(dentry);
  	return 0;
  }
-@@ -135,13 +139,15 @@ static int cp_new_stat(struct inode * in
+@@ -135,13 +137,15 @@
  asmlinkage long sys_stat(char * filename, struct __old_kernel_stat * statbuf)
  {
  	struct nameidata nd;
@@ -1476,7 +1527,7 @@
  		path_release(&nd);
  	}
  	return error;
-@@ -151,13 +157,15 @@ asmlinkage long sys_stat(char * filename
+@@ -151,13 +155,15 @@
  asmlinkage long sys_newstat(char * filename, struct stat * statbuf)
  {
  	struct nameidata nd;
@@ -1494,7 +1545,7 @@
  		path_release(&nd);
  	}
  	return error;
-@@ -172,13 +180,15 @@ asmlinkage long sys_newstat(char * filen
+@@ -172,13 +178,15 @@
  asmlinkage long sys_lstat(char * filename, struct __old_kernel_stat * statbuf)
  {
  	struct nameidata nd;
@@ -1512,7 +1563,7 @@
  		path_release(&nd);
  	}
  	return error;
-@@ -189,13 +199,15 @@ asmlinkage long sys_lstat(char * filenam
+@@ -189,13 +197,15 @@
  asmlinkage long sys_newlstat(char * filename, struct stat * statbuf)
  {
  	struct nameidata nd;
@@ -1530,7 +1581,7 @@
  		path_release(&nd);
  	}
  	return error;
-@@ -216,7 +228,7 @@ asmlinkage long sys_fstat(unsigned int f
+@@ -216,7 +226,7 @@
  	if (f) {
  		struct dentry * dentry = f->f_dentry;
  
@@ -1539,7 +1590,7 @@
  		if (!err)
  			err = cp_old_stat(dentry->d_inode, statbuf);
  		fput(f);
-@@ -235,7 +247,7 @@ asmlinkage long sys_newfstat(unsigned in
+@@ -235,7 +245,7 @@
  	if (f) {
  		struct dentry * dentry = f->f_dentry;
  
@@ -1548,7 +1599,7 @@
  		if (!err)
  			err = cp_new_stat(dentry->d_inode, statbuf);
  		fput(f);
-@@ -257,7 +269,7 @@ asmlinkage long sys_readlink(const char 
+@@ -257,7 +267,7 @@
  
  		error = -EINVAL;
  		if (inode->i_op && inode->i_op->readlink &&
@@ -1557,7 +1608,7 @@
  			UPDATE_ATIME(inode);
  			error = inode->i_op->readlink(nd.dentry, buf, bufsiz);
  		}
-@@ -333,12 +345,14 @@ asmlinkage long sys_stat64(char * filena
+@@ -333,12 +343,14 @@
  {
  	struct nameidata nd;
  	int error;
@@ -1574,7 +1625,7 @@
  		path_release(&nd);
  	}
  	return error;
-@@ -348,12 +362,14 @@ asmlinkage long sys_lstat64(char * filen
+@@ -348,12 +360,14 @@
  {
  	struct nameidata nd;
  	int error;
@@ -1591,7 +1642,7 @@
  		path_release(&nd);
  	}
  	return error;
-@@ -368,7 +384,7 @@ asmlinkage long sys_fstat64(unsigned lon
+@@ -368,7 +382,7 @@
  	if (f) {
  		struct dentry * dentry = f->f_dentry;
  
@@ -1600,21 +1651,11 @@
  		if (!err)
  			err = cp_new_stat64(dentry->d_inode, statbuf);
  		fput(f);
---- linux-2.4.20-hp4-pnnl13/fs/proc/base.c~vfs_intent-2.4.20-hp	2003-09-13 15:19:19.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/fs/proc/base.c	2003-09-14 17:33:51.000000000 +0400
-@@ -481,6 +481,9 @@ static int proc_pid_follow_link(struct d
- 
- 	error = inode->u.proc_i.op.proc_get_link(inode, &nd->dentry, &nd->mnt);
- 	nd->last_type = LAST_BIND;
-+
-+	if (nd->intent != NULL)
-+		nd->intent->d.lustre.it_int_flags |= IT_FL_FOLLOWED;
- out:
- 	return error;
- }
---- linux-2.4.20-hp4-pnnl13/include/linux/dcache.h~vfs_intent-2.4.20-hp	2002-11-29 02:53:15.000000000 +0300
-+++ linux-2.4.20-hp4-pnnl13-alexey/include/linux/dcache.h	2003-09-14 17:33:51.000000000 +0400
-@@ -6,6 +6,51 @@
+Index: linux/include/linux/dcache.h
+===================================================================
+--- linux.orig/include/linux/dcache.h	Thu Nov 28 18:53:15 2002
++++ linux/include/linux/dcache.h	Wed Mar 17 13:11:25 2004
+@@ -6,6 +6,52 @@
  #include <asm/atomic.h>
  #include <linux/mount.h>
  #include <linux/kernel.h>
@@ -1629,6 +1670,7 @@
 +#define IT_GETXATTR 0x0040
 +#define IT_EXEC     0x0080
 +#define IT_PIN      0x0100
++#define IT_CHDIR    0x0200
 +
 +#define IT_FL_LOCKED   0x0001
 +#define IT_FL_FOLLOWED 0x0002 /* set by vfs_follow_link */
@@ -1666,11 +1708,20 @@
  
  /*
   * linux/include/linux/dcache.h
-@@ -91,8 +136,22 @@ struct dentry_operations {
+@@ -84,6 +130,8 @@
+ 	unsigned char d_iname[DNAME_INLINE_LEN]; /* small names */
+ };
+ 
++struct nameidata;
++
+ struct dentry_operations {
+ 	int (*d_revalidate)(struct dentry *, int);
+ 	int (*d_hash) (struct dentry *, struct qstr *);
+@@ -91,8 +136,22 @@
  	int (*d_delete)(struct dentry *);
  	void (*d_release)(struct dentry *);
  	void (*d_iput)(struct dentry *, struct inode *);
-+	int (*d_revalidate_it)(struct dentry *, int, struct lookup_intent *);
++	int (*d_revalidate_it)(struct dentry *, int, struct nameidata *, struct lookup_intent *);
 +	void (*d_pin)(struct dentry *, struct vfsmount * , int);
 +	void (*d_unpin)(struct dentry *, struct vfsmount *, int);
  };
@@ -1689,7 +1740,7 @@
  /* the dentry parameter passed to d_hash and d_compare is the parent
   * directory of the entries to be compared. It is used in case these
   * functions need any directory specific information for determining
-@@ -124,6 +183,7 @@ d_iput:		no		no		yes
+@@ -124,6 +183,7 @@
  					 * s_nfsd_free_path semaphore will be down
  					 */
  #define DCACHE_REFERENCED	0x0008  /* Recently used, don't discard. */
@@ -1697,9 +1748,11 @@
  
  extern spinlock_t dcache_lock;
  
---- linux-2.4.20-hp4-pnnl13/include/linux/fs.h~vfs_intent-2.4.20-hp	2003-09-14 17:33:50.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/include/linux/fs.h	2003-09-14 17:33:51.000000000 +0400
-@@ -73,6 +73,7 @@ extern int leases_enable, dir_notify_ena
+Index: linux/include/linux/fs.h
+===================================================================
+--- linux.orig/include/linux/fs.h	Wed Mar 17 13:11:23 2004
++++ linux/include/linux/fs.h	Wed Mar 17 13:11:31 2004
+@@ -73,6 +73,7 @@
  
  #define FMODE_READ 1
  #define FMODE_WRITE 2
@@ -1707,17 +1760,17 @@
  
  #define READ 0
  #define WRITE 1
-@@ -340,6 +341,9 @@ extern void set_bh_page(struct buffer_he
+@@ -340,6 +341,9 @@
  #define ATTR_MTIME_SET	256
  #define ATTR_FORCE	512	/* Not a change, but a change it */
  #define ATTR_ATTR_FLAG	1024
 +#define ATTR_RAW	0x0800	/* file system, not vfs will massage attrs */
 +#define ATTR_FROM_OPEN	0x1000	/* called from open path, ie O_TRUNC */
-+#define ATTR_CTIME_SET 0x2000
++#define ATTR_CTIME_SET	0x2000
  
  /*
   * This is the Inode Attributes structure, used for notify_change().  It
-@@ -474,6 +478,7 @@ struct inode {
+@@ -474,6 +478,7 @@
  	struct pipe_inode_info	*i_pipe;
  	struct block_device	*i_bdev;
  	struct char_device	*i_cdev;
@@ -1725,7 +1778,7 @@
  
  	unsigned long		i_dnotify_mask; /* Directory notify events */
  	struct dnotify_struct	*i_dnotify; /* for directory notifications */
-@@ -576,6 +581,7 @@ struct file {
+@@ -576,6 +581,7 @@
  
  	/* needed for tty driver, and maybe others */
  	void			*private_data;
@@ -1733,7 +1786,7 @@
  
  	/* preallocated helper kiobuf to speedup O_DIRECT */
  	struct kiobuf		*f_iobuf;
-@@ -697,6 +703,7 @@ struct nameidata {
+@@ -697,6 +703,7 @@
  	struct qstr last;
  	unsigned int flags;
  	int last_type;
@@ -1741,7 +1794,7 @@
  };
  
  /*
-@@ -817,7 +824,8 @@ extern int vfs_symlink(struct inode *, s
+@@ -817,7 +824,8 @@
  extern int vfs_link(struct dentry *, struct inode *, struct dentry *);
  extern int vfs_rmdir(struct inode *, struct dentry *);
  extern int vfs_unlink(struct inode *, struct dentry *);
@@ -1751,13 +1804,13 @@
  
  /*
   * File types
-@@ -877,21 +885,32 @@ struct file_operations {
+@@ -877,21 +885,32 @@
  
  struct inode_operations {
  	int (*create) (struct inode *,struct dentry *,int);
 +	int (*create_it) (struct inode *,struct dentry *,int, struct lookup_intent *);
  	struct dentry * (*lookup) (struct inode *,struct dentry *);
-+	struct dentry * (*lookup_it) (struct inode *,struct dentry *, struct lookup_intent *, int flags);
++	struct dentry * (*lookup_it) (struct inode *,struct dentry *, struct nameidata *, struct lookup_intent *, int flags);
  	int (*link) (struct dentry *,struct inode *,struct dentry *);
 +	int (*link_raw) (struct nameidata *,struct nameidata *);
  	int (*unlink) (struct inode *,struct dentry *);
@@ -1784,12 +1837,22 @@
  	int (*getattr) (struct dentry *, struct iattr *);
  	int (*setxattr) (struct dentry *, const char *, void *, size_t, int);
  	ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
-@@ -1088,10 +1107,14 @@ static inline int get_lease(struct inode
+@@ -938,6 +957,7 @@
+ 	int (*remount_fs) (struct super_block *, int *, char *);
+ 	void (*clear_inode) (struct inode *);
+ 	void (*umount_begin) (struct super_block *);
++	void (*umount_lustre) (struct super_block *);
+ 
+ 	/* Following are for knfsd to interact with "interesting" filesystems
+ 	 * Currently just reiserfs, but possibly FAT and others later
+@@ -1088,10 +1107,16 @@
  
  asmlinkage long sys_open(const char *, int, int);
  asmlinkage long sys_close(unsigned int);	/* yes, it's really unsigned */
 -extern int do_truncate(struct dentry *, loff_t start);
 +extern int do_truncate(struct dentry *, loff_t start, int called_from_open);
++struct dentry *lookup_create(struct nameidata *nd, int is_dir,
++				    struct lookup_intent *it);
  
  extern struct file *filp_open(const char *, int, int);
  extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
@@ -1800,7 +1863,7 @@
  extern int filp_close(struct file *, fl_owner_t id);
  extern char * getname(const char *);
  
-@@ -1353,6 +1376,7 @@ typedef int (*read_actor_t)(read_descrip
+@@ -1354,6 +1377,7 @@
  extern loff_t default_llseek(struct file *file, loff_t offset, int origin);
  
  extern int FASTCALL(__user_walk(const char *, unsigned, struct nameidata *));
@@ -1808,7 +1871,7 @@
  extern int FASTCALL(path_init(const char *, unsigned, struct nameidata *));
  extern int FASTCALL(path_walk(const char *, struct nameidata *));
  extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
-@@ -1364,6 +1388,8 @@ extern struct dentry * lookup_one_len(co
+@@ -1365,6 +1389,8 @@
  extern struct dentry * lookup_hash(struct qstr *, struct dentry *);
  #define user_path_walk(name,nd)	 __user_walk(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, nd)
  #define user_path_walk_link(name,nd) __user_walk(name, LOOKUP_POSITIVE, nd)
@@ -1816,8 +1879,8 @@
 +#define user_path_walk_link_it(name,nd,it) __user_walk_it(name, LOOKUP_POSITIVE, nd, it)
  
  extern void inode_init_once(struct inode *);
- extern void iput(struct inode *);
-@@ -1499,6 +1525,8 @@ extern struct file_operations generic_ro
+ extern void _inode_init_once(struct inode *);
+@@ -1503,6 +1529,8 @@
  
  extern int vfs_readlink(struct dentry *, char *, int, const char *);
  extern int vfs_follow_link(struct nameidata *, const char *);
@@ -1826,9 +1889,11 @@
  extern int page_readlink(struct dentry *, char *, int);
  extern int page_follow_link(struct dentry *, struct nameidata *);
  extern struct inode_operations page_symlink_inode_operations;
---- linux-2.4.20-hp4-pnnl13/include/linux/fs_struct.h~vfs_intent-2.4.20-hp	2001-07-14 02:10:44.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/include/linux/fs_struct.h	2003-09-14 17:33:51.000000000 +0400
-@@ -34,10 +34,12 @@ static inline void set_fs_root(struct fs
+Index: linux/include/linux/fs_struct.h
+===================================================================
+--- linux.orig/include/linux/fs_struct.h	Fri Jul 13 18:10:44 2001
++++ linux/include/linux/fs_struct.h	Wed Mar 17 13:11:25 2004
+@@ -34,10 +34,12 @@
  	write_lock(&fs->lock);
  	old_root = fs->root;
  	old_rootmnt = fs->rootmnt;
@@ -1841,7 +1906,7 @@
  		dput(old_root);
  		mntput(old_rootmnt);
  	}
-@@ -57,10 +59,12 @@ static inline void set_fs_pwd(struct fs_
+@@ -57,10 +59,12 @@
  	write_lock(&fs->lock);
  	old_pwd = fs->pwd;
  	old_pwdmnt = fs->pwdmnt;
@@ -1854,35 +1919,11 @@
  		dput(old_pwd);
  		mntput(old_pwdmnt);
  	}
---- linux-2.4.20-hp4-pnnl13/kernel/ksyms.c~vfs_intent-2.4.20-hp	2003-09-14 17:33:50.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/kernel/ksyms.c	2003-09-14 17:33:51.000000000 +0400
-@@ -296,6 +296,7 @@ EXPORT_SYMBOL(read_cache_page);
- EXPORT_SYMBOL(set_page_dirty);
- EXPORT_SYMBOL(vfs_readlink);
- EXPORT_SYMBOL(vfs_follow_link);
-+EXPORT_SYMBOL(vfs_follow_link_it);
- EXPORT_SYMBOL(page_readlink);
- EXPORT_SYMBOL(page_follow_link);
- EXPORT_SYMBOL(page_symlink_inode_operations);
---- linux-2.4.20-hp4-pnnl13/kernel/fork.c~vfs_intent-2.4.20-hp	2003-09-13 15:19:27.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/kernel/fork.c	2003-09-14 17:33:51.000000000 +0400
-@@ -388,10 +388,13 @@ static inline struct fs_struct *__copy_f
- 		fs->umask = old->umask;
- 		read_lock(&old->lock);
- 		fs->rootmnt = mntget(old->rootmnt);
-+		PIN(old->pwd, old->pwdmnt, 0);
-+		PIN(old->root, old->rootmnt, 1);
- 		fs->root = dget(old->root);
- 		fs->pwdmnt = mntget(old->pwdmnt);
- 		fs->pwd = dget(old->pwd);
- 		if (old->altroot) {
-+			PIN(old->altroot, old->altrootmnt, 1);
- 			fs->altrootmnt = mntget(old->altrootmnt);
- 			fs->altroot = dget(old->altroot);
- 		} else {
---- linux-2.4.20-hp4-pnnl13/kernel/exit.c~vfs_intent-2.4.20-hp	2003-09-13 15:19:27.000000000 +0400
-+++ linux-2.4.20-hp4-pnnl13-alexey/kernel/exit.c	2003-09-14 17:33:51.000000000 +0400
-@@ -239,11 +239,14 @@ static inline void __put_fs_struct(struc
+Index: linux/kernel/exit.c
+===================================================================
+--- linux.orig/kernel/exit.c	Wed Mar 17 13:00:38 2004
++++ linux/kernel/exit.c	Wed Mar 17 13:11:25 2004
+@@ -239,11 +239,14 @@
  {
  	/* No need to hold fs->lock if we are killing it */
  	if (atomic_dec_and_test(&fs->count)) {
@@ -1897,5 +1938,55 @@
  			dput(fs->altroot);
  			mntput(fs->altrootmnt);
  		}
-
-_
+Index: linux/kernel/fork.c
+===================================================================
+--- linux.orig/kernel/fork.c	Wed Mar 17 13:00:38 2004
++++ linux/kernel/fork.c	Wed Mar 17 13:11:25 2004
+@@ -387,10 +387,13 @@
+ 		fs->umask = old->umask;
+ 		read_lock(&old->lock);
+ 		fs->rootmnt = mntget(old->rootmnt);
++		PIN(old->pwd, old->pwdmnt, 0);
++		PIN(old->root, old->rootmnt, 1);
+ 		fs->root = dget(old->root);
+ 		fs->pwdmnt = mntget(old->pwdmnt);
+ 		fs->pwd = dget(old->pwd);
+ 		if (old->altroot) {
++			PIN(old->altroot, old->altrootmnt, 1);
+ 			fs->altrootmnt = mntget(old->altrootmnt);
+ 			fs->altroot = dget(old->altroot);
+ 		} else {
+Index: linux/kernel/ksyms.c
+===================================================================
+--- linux.orig/kernel/ksyms.c	Wed Mar 17 13:11:23 2004
++++ linux/kernel/ksyms.c	Wed Mar 17 13:11:25 2004
+@@ -315,6 +315,9 @@
+ EXPORT_SYMBOL(set_page_dirty);
+ EXPORT_SYMBOL(vfs_readlink);
+ EXPORT_SYMBOL(vfs_follow_link);
++EXPORT_SYMBOL(vfs_follow_link_it);
++EXPORT_SYMBOL(do_umount);
++EXPORT_SYMBOL(lookup_create);
+ EXPORT_SYMBOL(page_readlink);
+ EXPORT_SYMBOL(page_follow_link);
+ EXPORT_SYMBOL(page_symlink_inode_operations);
+===== include/linux/mount.h 1.7 vs edited =====
+--- linux.orig/include/linux/mount.h	Tue Feb  5 09:49:35 2002
++++ linux/include/linux/mount.h	Tue May  4 19:23:48 2004
+@@ -29,6 +29,8 @@
+ 	int mnt_flags;
+ 	char *mnt_devname;		/* Name of device e.g. /dev/dsk/hda1 */
+ 	struct list_head mnt_list;
++	struct list_head mnt_lustre_list; /* GNS mount list */
++	unsigned long mnt_last_used;      /* for GNS auto-umount (jiffies) */
+ };
+ 
+ static inline struct vfsmount *mntget(struct vfsmount *mnt)
+@@ -39,6 +39,7 @@
+ }
+ 
+ extern void __mntput(struct vfsmount *mnt);
++extern int do_umount(struct vfsmount *mnt, int flags);
+ 
+ static inline void mntput(struct vfsmount *mnt)
+ {