--- /dev/null
+Index: linux-2.6.15-fc5/fs/inode.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/inode.c 2006-05-31 04:08:19.000000000 +0800
++++ linux-2.6.15-fc5/fs/inode.c 2006-05-31 17:24:35.000000000 +0800
+@@ -236,6 +236,7 @@
+ inodes_stat.nr_unused--;
+ }
+
++EXPORT_SYMBOL(__iget);
+ /**
+ * clear_inode - clear an inode
+ * @inode: inode to clear
+Index: linux-2.6.15-fc5/fs/open.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/open.c 2006-05-31 04:08:39.000000000 +0800
++++ linux-2.6.15-fc5/fs/open.c 2006-05-31 17:24:35.000000000 +0800
+@@ -224,12 +224,12 @@
+ struct nameidata nd;
+ struct inode * inode;
+ int error;
+-
++ intent_init(&nd.intent, IT_GETATTR);
+ error = -EINVAL;
+ if (length < 0) /* sorry, but loff_t says... */
+ goto out;
+
+- error = user_path_walk(path, &nd);
++ error = user_path_walk_it(path, &nd);
+ if (error)
+ goto out;
+ inode = nd.dentry->d_inode;
+@@ -488,6 +488,7 @@
+ int old_fsuid, old_fsgid;
+ kernel_cap_t old_cap;
+ int res;
++ intent_init(&nd.intent, IT_GETATTR);
+
+ if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */
+ return -EINVAL;
+@@ -512,7 +513,7 @@
+ else
+ current->cap_effective = current->cap_permitted;
+
+- res = __user_walk_fd(dfd, filename, LOOKUP_FOLLOW|LOOKUP_ACCESS, &nd);
++ res = __user_walk_fd_it(dfd, filename, LOOKUP_FOLLOW|LOOKUP_ACCESS, &nd);
+ if (!res) {
+ res = vfs_permission(&nd, mode);
+ /* SuS v2 requires we report a read only fs too */
+@@ -538,8 +539,9 @@
+ {
+ struct nameidata nd;
+ int error;
++ intent_init(&nd.intent, IT_GETATTR);
+
+- error = __user_walk(filename, LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &nd);
++ error = __user_walk_it(filename, LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &nd);
+ if (error)
+ goto out;
+
+@@ -591,8 +593,9 @@
+ {
+ struct nameidata nd;
+ int error;
++ intent_init(&nd.intent, IT_GETATTR);
+
+- error = __user_walk(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
++ error = __user_walk_it(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
+ if (error)
+ goto out;
+
+@@ -815,6 +818,7 @@
+ error = open(inode, f);
+ if (error)
+ goto cleanup_all;
++ intent_release(f->f_it);
+ }
+
+ f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
+@@ -841,6 +845,7 @@
+ f->f_dentry = NULL;
+ f->f_vfsmnt = NULL;
+ cleanup_file:
++ intent_release(f->f_it);
+ put_filp(f);
+ dput(dentry);
+ mntput(mnt);
+@@ -866,6 +871,7 @@
+ {
+ int namei_flags, error;
+ struct nameidata nd;
++ intent_init(&nd.intent, IT_OPEN);
+
+ namei_flags = flags;
+ if ((namei_flags+1) & O_ACCMODE)
+@@ -902,19 +908,19 @@
+ struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry,
+ int (*open)(struct inode *, struct file *))
+ {
+- if (IS_ERR(nd->intent.open.file))
++ if (IS_ERR(nd->intent.file))
+ goto out;
+ if (IS_ERR(dentry))
+ goto out_err;
+- nd->intent.open.file = __dentry_open(dget(dentry), mntget(nd->mnt),
+- nd->intent.open.flags - 1,
+- nd->intent.open.file,
++ nd->intent.file = __dentry_open(dget(dentry), mntget(nd->mnt),
++ nd->intent.flags - 1,
++ nd->intent.file,
+ open);
+ out:
+- return nd->intent.open.file;
++ return nd->intent.file;
+ out_err:
+ release_open_intent(nd);
+- nd->intent.open.file = (struct file *)dentry;
++ nd->intent.file = (struct file *)dentry;
+ goto out;
+ }
+ EXPORT_SYMBOL_GPL(lookup_instantiate_filp);
+@@ -931,7 +937,8 @@
+ struct file *filp;
+
+ /* Pick up the filp from the open intent */
+- filp = nd->intent.open.file;
++ filp = nd->intent.file;
++ filp->f_it = &nd->intent;
+ /* Has the filesystem initialised the file for us? */
+ if (filp->f_dentry == NULL)
+ filp = __dentry_open(nd->dentry, nd->mnt, flags, filp, NULL);
+Index: linux-2.6.15-fc5/fs/nfsctl.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/nfsctl.c 2006-05-31 04:08:20.000000000 +0800
++++ linux-2.6.15-fc5/fs/nfsctl.c 2006-05-31 17:24:35.000000000 +0800
+@@ -26,6 +26,7 @@
+ struct nameidata nd;
+ int error;
+
++ intent_init(&nd.intent, IT_OPEN);
+ nd.mnt = do_kern_mount("nfsd", 0, "nfsd", NULL);
+
+ if (IS_ERR(nd.mnt))
+Index: linux-2.6.15-fc5/fs/namei.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/namei.c 2006-05-31 04:08:33.000000000 +0800
++++ linux-2.6.15-fc5/fs/namei.c 2006-05-31 17:24:35.000000000 +0800
+@@ -337,8 +337,19 @@
+ return 0;
+ }
+
++void intent_release(struct lookup_intent *it)
++{
++ if (!it)
++ return;
++ if (it->it_magic != INTENT_MAGIC)
++ return;
++ if (it->it_op_release)
++ it->it_op_release(it);
++}
++
+ void path_release(struct nameidata *nd)
+ {
++ intent_release(&nd->intent);
+ dput(nd->dentry);
+ mntput(nd->mnt);
+ }
+@@ -359,10 +370,10 @@
+ */
+ void release_open_intent(struct nameidata *nd)
+ {
+- if (nd->intent.open.file->f_dentry == NULL)
+- put_filp(nd->intent.open.file);
++ if (nd->intent.file->f_dentry == NULL)
++ put_filp(nd->intent.file);
+ else
+- fput(nd->intent.open.file);
++ fput(nd->intent.file);
+ }
+
+ /*
+@@ -440,8 +451,12 @@
+ {
+ struct dentry * result;
+ struct inode *dir = parent->d_inode;
+-
++ int counter = 0;
++
+ mutex_lock(&dir->i_mutex);
++again:
++ counter++;
++
+ /*
+ * First re-do the cached lookup just in case it was created
+ * while we waited for the directory semaphore..
+@@ -475,13 +490,16 @@
+ * Uhhuh! Nasty case: the cache was re-populated while
+ * we waited on the semaphore. Need to revalidate.
+ */
+- mutex_unlock(&dir->i_mutex);
+ if (result->d_op && result->d_op->d_revalidate) {
+ if (!result->d_op->d_revalidate(result, nd) && !d_invalidate(result)) {
+ dput(result);
+- result = ERR_PTR(-ENOENT);
++ if (counter > 10)
++ result = ERR_PTR(-ESTALE);
++ if (!IS_ERR(result))
++ goto again;
+ }
+ }
++ mutex_unlock(&dir->i_mutex);
+ return result;
+ }
+
+@@ -509,7 +527,9 @@
+ static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *link)
+ {
+ int res = 0;
++ struct lookup_intent it = nd->intent;
+ char *name;
++
+ if (IS_ERR(link))
+ goto fail;
+
+@@ -519,6 +539,10 @@
+ /* weird __emul_prefix() stuff did it */
+ goto out;
+ }
++ intent_init(&nd->intent, it.it_op);
++ nd->intent.it_flags = it.it_flags;
++ nd->intent.it_create_mode = it.it_create_mode;
++ nd->intent.file = it.file;
+ res = link_path_walk(link, nd);
+ out:
+ if (nd->depth || res || nd->last_type!=LAST_NORM)
+@@ -772,6 +796,33 @@
+ return PTR_ERR(dentry);
+ }
+
++static int revalidate_special(struct nameidata *nd)
++{
++ struct dentry *dentry = nd->dentry;
++ int err, counter = 0;
++
++ revalidate_again:
++ if (!dentry->d_op || !dentry->d_op->d_revalidate)
++ return 0;
++ if (!dentry->d_op->d_revalidate(dentry, nd)) {
++ struct dentry *new;
++ if ((err = permission(dentry->d_parent->d_inode, MAY_EXEC, nd)))
++ return err;
++ new = real_lookup(dentry->d_parent, &dentry->d_name, nd);
++ if (IS_ERR(new))
++ return PTR_ERR(new);
++ d_invalidate(dentry);
++ dput(dentry);
++ nd->dentry = dentry = new;
++ counter++;
++ if (counter < 10)
++ goto revalidate_again;
++ printk("excessive revalidate_it loops\n");
++ return -ESTALE;
++ }
++ return 0;
++}
++
+ /*
+ * Name resolution.
+ * This is the basic name resolution function, turning a pathname into
+@@ -870,7 +921,11 @@
+ goto out_dput;
+
+ if (inode->i_op->follow_link) {
++ int save_flags = nd->flags;
++ nd->flags |= LOOKUP_LINK_NOTLAST;
+ err = do_follow_link(&next, nd);
++ if (!(save_flags & LOOKUP_LINK_NOTLAST))
++ nd->flags &= ~LOOKUP_LINK_NOTLAST;
+ if (err)
+ goto return_err;
+ err = -ENOENT;
+@@ -905,6 +960,23 @@
+ inode = nd->dentry->d_inode;
+ /* fallthrough */
+ case 1:
++ nd->flags |= LOOKUP_LAST;
++ err = revalidate_special(nd);
++ nd->flags &= ~LOOKUP_LAST;
++ if (!nd->dentry->d_inode)
++ err = -ENOENT;
++ if (err) {
++ path_release(nd);
++ goto return_err;
++ }
++ if (lookup_flags & LOOKUP_DIRECTORY) {
++ err = -ENOTDIR;
++ if(!nd->dentry->d_inode->i_op ||
++ !nd->dentry->d_inode->i_op->lookup) {
++ path_release(nd);
++ goto return_err;
++ }
++ }
+ goto return_reval;
+ }
+ if (nd->dentry->d_op && nd->dentry->d_op->d_hash) {
+@@ -912,7 +984,9 @@
+ if (err < 0)
+ break;
+ }
++ nd->flags |= LOOKUP_LAST;
+ err = do_lookup(nd, &this, &next, atomic);
++ nd->flags &= ~LOOKUP_LAST;
+ if (err)
+ break;
+ inode = next.dentry->d_inode;
+@@ -1154,13 +1228,13 @@
+
+ if (filp == NULL)
+ return -ENFILE;
+- nd->intent.open.file = filp;
+- nd->intent.open.flags = open_flags;
+- nd->intent.open.create_mode = create_mode;
++ nd->intent.file = filp;
++ nd->intent.flags = open_flags;
++ nd->intent.create_mode = create_mode;
+ err = do_path_lookup(dfd, name, lookup_flags|LOOKUP_OPEN, nd);
+- if (IS_ERR(nd->intent.open.file)) {
++ if (IS_ERR(nd->intent.file)) {
+ if (err == 0) {
+- err = PTR_ERR(nd->intent.open.file);
++ err = PTR_ERR(nd->intent.file);
+ path_release(nd);
+ }
+ } else if (err != 0)
+@@ -1263,7 +1337,7 @@
+ }
+
+ /* SMP-safe */
+-struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
++struct dentry * lookup_one_len_it(const char * name, struct dentry * base, int len, struct nameidata *nd)
+ {
+ unsigned long hash;
+ struct qstr this;
+@@ -1283,11 +1357,17 @@
+ }
+ this.hash = end_name_hash(hash);
+
+- return __lookup_hash(&this, base, NULL);
++ return __lookup_hash(&this, base, nd);
+ access:
+ return ERR_PTR(-EACCES);
+ }
+
++struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
++{
++ return lookup_one_len_it(name, base, len, NULL);
++}
++
++
+ /*
+ * namei()
+ *
+@@ -1299,8 +1379,9 @@
+ * that namei follows links, while lnamei does not.
+ * SMP-safe
+ */
+-int fastcall __user_walk_fd(int dfd, const char __user *name, unsigned flags,
+- struct nameidata *nd)
++
++int fastcall __user_walk_fd_it(int dfd, const char __user *name, unsigned flags,
++ struct nameidata *nd)
+ {
+ char *tmp = getname(name);
+ int err = PTR_ERR(tmp);
+@@ -1312,9 +1393,22 @@
+ return err;
+ }
+
++int fastcall __user_walk_fd(int dfd, const char __user *name, unsigned flags,
++ struct nameidata *nd)
++{
++ intent_init(&nd->intent, IT_LOOKUP);
++ return __user_walk_fd_it(dfd, name, flags, nd);
++}
++
++int fastcall __user_walk_it(const char __user *name, unsigned flags, struct nameidata *nd)
++{
++ return __user_walk_fd_it(AT_FDCWD, name, flags, nd);
++}
++
+ int fastcall __user_walk(const char __user *name, unsigned flags, struct nameidata *nd)
+ {
+- return __user_walk_fd(AT_FDCWD, name, flags, nd);
++ intent_init(&nd->intent, IT_LOOKUP);
++ return __user_walk_it(name, flags, nd);
+ }
+
+ /*
+@@ -1596,6 +1690,8 @@
+ if (flag & O_APPEND)
+ acc_mode |= MAY_APPEND;
+
++ nd->intent.it_flags = flag;
++ nd->intent.it_create_mode = mode;
+ /*
+ * The simplest case - just a plain lookup.
+ */
+@@ -1610,6 +1706,7 @@
+ /*
+ * Create - we need to know the parent.
+ */
++ nd->intent.it_op |= IT_CREAT;
+ error = path_lookup_create(dfd,pathname,LOOKUP_PARENT,nd,flag,mode);
+ if (error)
+ return error;
+@@ -1626,7 +1723,9 @@
+ dir = nd->dentry;
+ nd->flags &= ~LOOKUP_PARENT;
+ mutex_lock(&dir->d_inode->i_mutex);
++ nd->flags |= LOOKUP_LAST;
+ path.dentry = lookup_hash(nd);
++ nd->flags &= ~LOOKUP_LAST;
+ path.mnt = nd->mnt;
+
+ do_last:
+@@ -1685,7 +1784,7 @@
+ exit_dput:
+ dput_path(&path, nd);
+ exit:
+- if (!IS_ERR(nd->intent.open.file))
++ if (!IS_ERR(nd->intent.file))
+ release_open_intent(nd);
+ path_release(nd);
+ return error;
+@@ -1728,7 +1827,9 @@
+ }
+ dir = nd->dentry;
+ mutex_lock(&dir->d_inode->i_mutex);
++ nd->flags |= LOOKUP_LAST;
+ path.dentry = lookup_hash(nd);
++ nd->flags &= ~LOOKUP_LAST;
+ path.mnt = nd->mnt;
+ __putname(nd->last.name);
+ goto do_last;
+@@ -2240,6 +2341,8 @@
+ int error;
+ char * to;
+
++ intent_init(&nd.intent, IT_LOOKUP);
++ intent_init(&old_nd.intent, IT_LOOKUP);
+ if (flags != 0)
+ return -EINVAL;
+
+@@ -2247,7 +2350,7 @@
+ if (IS_ERR(to))
+ return PTR_ERR(to);
+
+- error = __user_walk_fd(olddfd, oldname, 0, &old_nd);
++ error = __user_walk_fd_it(olddfd, oldname, 0, &old_nd);
+ if (error)
+ goto exit;
+ error = do_path_lookup(newdfd, to, LOOKUP_PARENT, &nd);
+Index: linux-2.6.15-fc5/fs/stat.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/stat.c 2006-05-31 04:08:20.000000000 +0800
++++ linux-2.6.15-fc5/fs/stat.c 2006-05-31 17:24:35.000000000 +0800
+@@ -38,7 +38,7 @@
+
+ EXPORT_SYMBOL(generic_fillattr);
+
+-int vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
++int vfs_getattr_it(struct vfsmount *mnt, struct dentry *dentry, struct lookup_intent *it, struct kstat *stat)
+ {
+ struct inode *inode = dentry->d_inode;
+ int retval;
+@@ -47,6 +47,8 @@
+ if (retval)
+ return retval;
+
++ if (inode->i_op->getattr_it)
++ return inode->i_op->getattr_it(mnt, dentry, it, stat);
+ if (inode->i_op->getattr)
+ return inode->i_op->getattr(mnt, dentry, stat);
+
+@@ -61,6 +63,11 @@
+ return 0;
+ }
+
++int vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
++{
++ return vfs_getattr_it(mnt, dentry, NULL, stat);
++}
++
+ EXPORT_SYMBOL(vfs_getattr);
+
+ int vfs_stat_fd(int dfd, char __user *name, struct kstat *stat)
+@@ -68,9 +75,10 @@
+ struct nameidata nd;
+ int error;
+
+- error = __user_walk_fd(dfd, name, LOOKUP_FOLLOW, &nd);
++ intent_init(&nd.intent, IT_GETATTR);
++ error = __user_walk_fd_it(dfd, name, LOOKUP_FOLLOW, &nd);
+ if (!error) {
+- error = vfs_getattr(nd.mnt, nd.dentry, stat);
++ error = vfs_getattr_it(nd.mnt, nd.dentry, &nd.intent, stat);
+ path_release(&nd);
+ }
+ return error;
+@@ -88,9 +96,10 @@
+ struct nameidata nd;
+ int error;
+
+- error = __user_walk_fd(dfd, name, 0, &nd);
++ intent_init(&nd.intent, IT_GETATTR);
++ error = __user_walk_fd_it(dfd, name, 0, &nd);
+ if (!error) {
+- error = vfs_getattr(nd.mnt, nd.dentry, stat);
++ error = vfs_getattr_it(nd.mnt, nd.dentry, &nd.intent, stat);
+ path_release(&nd);
+ }
+ return error;
+@@ -107,9 +116,12 @@
+ {
+ struct file *f = fget(fd);
+ int error = -EBADF;
++ struct nameidata nd;
++ intent_init(&nd.intent, IT_GETATTR);
+
+ if (f) {
+- error = vfs_getattr(f->f_vfsmnt, f->f_dentry, stat);
++ error = vfs_getattr_it(f->f_vfsmnt, f->f_dentry, &nd.intent, stat);
++ intent_release(&nd.intent);
+ fput(f);
+ }
+ return error;
+Index: linux-2.6.15-fc5/fs/namespace.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/namespace.c 2006-05-31 04:08:33.000000000 +0800
++++ linux-2.6.15-fc5/fs/namespace.c 2006-05-31 17:24:35.000000000 +0800
+@@ -74,6 +74,7 @@
+ INIT_LIST_HEAD(&mnt->mnt_share);
+ INIT_LIST_HEAD(&mnt->mnt_slave_list);
+ INIT_LIST_HEAD(&mnt->mnt_slave);
++ INIT_LIST_HEAD(&mnt->mnt_lustre_list);
+ if (name) {
+ int size = strlen(name) + 1;
+ char *newname = kmalloc(size, GFP_KERNEL);
+@@ -154,6 +155,7 @@
+
+ static void detach_mnt(struct vfsmount *mnt, struct nameidata *old_nd)
+ {
++ memset(old_nd, 0, sizeof(*old_nd));
+ old_nd->dentry = mnt->mnt_mountpoint;
+ old_nd->mnt = mnt->mnt_parent;
+ mnt->mnt_parent = mnt;
+@@ -272,6 +274,9 @@
+ {
+ struct super_block *sb = mnt->mnt_sb;
+ dput(mnt->mnt_root);
++ spin_lock(&dcache_lock);
++ list_del(&mnt->mnt_lustre_list);
++ spin_unlock(&dcache_lock);
+ free_vfsmnt(mnt);
+ deactivate_super(sb);
+ }
+@@ -538,6 +543,8 @@
+ */
+
+ lock_kernel();
++ if (sb->s_op->umount_lustre)
++ sb->s_op->umount_lustre(sb);
+ if ((flags & MNT_FORCE) && sb->s_op->umount_begin)
+ sb->s_op->umount_begin(sb);
+ unlock_kernel();
+@@ -870,6 +877,7 @@
+ return err;
+ if (!old_name || !*old_name)
+ return -EINVAL;
++ intent_init(&old_nd.intent, IT_LOOKUP);
+ err = path_lookup(old_name, LOOKUP_FOLLOW, &old_nd);
+ if (err)
+ return err;
+@@ -955,6 +963,7 @@
+ return -EPERM;
+ if (!old_name || !*old_name)
+ return -EINVAL;
++ intent_init(&old_nd.intent, IT_LOOKUP);
+ err = path_lookup(old_name, LOOKUP_FOLLOW, &old_nd);
+ if (err)
+ return err;
+@@ -1270,6 +1279,7 @@
+ int retval = 0;
+ int mnt_flags = 0;
+
++ intent_init(&nd.intent, IT_LOOKUP);
+ /* Discard magic */
+ if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
+ flags &= ~MS_MGC_MSK;
+Index: linux-2.6.15-fc5/fs/exec.c
+===================================================================
+--- linux-2.6.15-fc5.orig/fs/exec.c 2006-05-31 04:08:33.000000000 +0800
++++ linux-2.6.15-fc5/fs/exec.c 2006-05-31 17:24:35.000000000 +0800
+@@ -127,7 +127,9 @@
+ struct nameidata nd;
+ int error;
+
+- error = __user_path_lookup_open(library, LOOKUP_FOLLOW, &nd, FMODE_READ);
++ intent_init(&nd.intent, IT_OPEN);
++ error = __user_path_lookup_open(library, LOOKUP_FOLLOW, &nd,
++ FMODE_READ | FMODE_EXEC);
+ if (error)
+ goto out;
+
+@@ -477,7 +479,9 @@
+ int err;
+ struct file *file;
+
+- err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd, FMODE_READ);
++ intent_init(&nd.intent, IT_OPEN);
++ err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd,
++ FMODE_READ | FMODE_EXEC);
+ file = ERR_PTR(err);
+
+ if (!err) {
+Index: linux-2.6.15-fc5/include/linux/dcache.h
+===================================================================
+--- linux-2.6.15-fc5.orig/include/linux/dcache.h 2006-05-31 04:08:33.000000000 +0800
++++ linux-2.6.15-fc5/include/linux/dcache.h 2006-05-31 17:24:41.000000000 +0800
+@@ -4,6 +4,7 @@
+ #ifdef __KERNEL__
+
+ #include <asm/atomic.h>
++#include <linux/string.h>
+ #include <linux/list.h>
+ #include <linux/spinlock.h>
+ #include <linux/cache.h>
+@@ -36,6 +37,8 @@
+ const unsigned char *name;
+ };
+
++#include <linux/namei.h>
++
+ struct dentry_stat_t {
+ int nr_dentry;
+ int nr_unused;
+Index: linux-2.6.15-fc5/include/linux/fs.h
+===================================================================
+--- linux-2.6.15-fc5.orig/include/linux/fs.h 2006-05-31 04:08:33.000000000 +0800
++++ linux-2.6.15-fc5/include/linux/fs.h 2006-05-31 17:24:35.000000000 +0800
+@@ -59,6 +59,7 @@
+
+ #define FMODE_READ 1
+ #define FMODE_WRITE 2
++#define FMODE_EXEC 4
+
+ /* Internal kernel extensions */
+ #define FMODE_LSEEK 4
+@@ -265,6 +266,8 @@
+ #define ATTR_KILL_SUID 2048
+ #define ATTR_KILL_SGID 4096
+ #define ATTR_FILE 8192
++#define ATTR_RAW 16384 /* file system, not vfs will massage attrs */
++#define ATTR_FROM_OPEN 32768 /* called from open path, ie O_TRUNC */
+
+ /*
+ * This is the Inode Attributes structure, used for notify_change(). It
+@@ -499,6 +502,7 @@
+ struct block_device *i_bdev;
+ struct cdev *i_cdev;
+ int i_cindex;
++ void *i_filterdata;
+
+ __u32 i_generation;
+
+@@ -646,6 +650,7 @@
+ spinlock_t f_ep_lock;
+ #endif /* #ifdef CONFIG_EPOLL */
+ struct address_space *f_mapping;
++ struct lookup_intent *f_it;
+ };
+ extern spinlock_t files_lock;
+ #define file_list_lock() spin_lock(&files_lock);
+@@ -1043,7 +1048,9 @@
+ void (*truncate) (struct inode *);
+ int (*permission) (struct inode *, int, struct nameidata *);
+ int (*setattr) (struct dentry *, struct iattr *);
++ int (*setattr_raw) (struct inode *, struct iattr *);
+ int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
++ int (*getattr_it) (struct vfsmount *, struct dentry *, struct lookup_intent *, struct kstat *);
+ int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
+ ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
+ ssize_t (*listxattr) (struct dentry *, char *, size_t);
+@@ -1084,6 +1091,7 @@
+ 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 *);
+
+ int (*show_options)(struct seq_file *, struct vfsmount *);
+
+@@ -1286,6 +1294,7 @@
+ extern int may_umount(struct vfsmount *);
+ extern void umount_tree(struct vfsmount *, int, struct list_head *);
+ extern void release_mounts(struct list_head *);
++struct vfsmount *do_kern_mount(const char *type, int flags, const char *name, void *data);
+ extern long do_mount(char *, char *, char *, unsigned long, void *);
+ extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
+ extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
+@@ -1347,6 +1356,7 @@
+ int mode);
+ extern struct file *filp_open(const char *, int, int);
+ extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
++extern struct file * dentry_open_it(struct dentry *, struct vfsmount *, int, struct lookup_intent *);
+ extern int filp_close(struct file *, fl_owner_t id);
+ extern char * getname(const char __user *);
+
+Index: linux-2.6.15-fc5/include/linux/namei.h
+===================================================================
+--- linux-2.6.15-fc5.orig/include/linux/namei.h 2006-05-31 04:08:39.000000000 +0800
++++ linux-2.6.15-fc5/include/linux/namei.h 2006-05-31 17:24:35.000000000 +0800
+@@ -5,10 +5,39 @@
+
+ struct vfsmount;
+
++#define IT_OPEN (1)
++#define IT_CREAT (1<<1)
++#define IT_READDIR (1<<2)
++#define IT_GETATTR (1<<3)
++#define IT_LOOKUP (1<<4)
++#define IT_UNLINK (1<<5)
++#define IT_TRUNC (1<<6)
++#define IT_GETXATTR (1<<7)
++
++struct lustre_intent_data {
++ int it_disposition;
++ int it_status;
++ __u64 it_lock_handle;
++ void *it_data;
++ int it_lock_mode;
++};
++
++#define INTENT_MAGIC 0x19620323
++
++#define it_flags flags
++#define it_create_mode create_mode
++#define lookup_intent open_intent
++
+ struct open_intent {
+- int flags;
+- int create_mode;
+- struct file *file;
++ int it_magic;
++ void (*it_op_release)(struct open_intent *);
++ int it_op;
++ int flags;
++ int create_mode;
++ struct file *file;
++ union {
++ struct lustre_intent_data lustre;
++ } d;
+ };
+
+ enum { MAX_NESTED_LINKS = 8 };
+@@ -22,12 +51,16 @@
+ unsigned depth;
+ char *saved_names[MAX_NESTED_LINKS + 1];
+
+- /* Intent data */
+- union {
+- struct open_intent open;
+- } intent;
++ struct lookup_intent intent;
+ };
+
++static inline void intent_init(struct lookup_intent *it, int op)
++{
++ memset(it, 0, sizeof(*it));
++ it->it_magic = INTENT_MAGIC;
++ it->it_op = op;
++}
++
+ /*
+ * Type of the last component on LOOKUP_PARENT
+ */
+@@ -49,7 +82,8 @@
+ #define LOOKUP_NOALT 32
+ #define LOOKUP_REVAL 64
+ #define LOOKUP_ATOMIC 128
+-
++#define LOOKUP_LAST (0x1000)
++#define LOOKUP_LINK_NOTLAST (0x2000)
+ /*
+ * Intent data
+ */
+@@ -59,10 +93,19 @@
+
+ extern int FASTCALL(__user_walk(const char __user *, unsigned, struct nameidata *));
+ extern int FASTCALL(__user_walk_fd(int dfd, const char __user *, unsigned, struct nameidata *));
++extern int FASTCALL(__user_walk_fd_it(int dfd, const char __user *, unsigned, struct nameidata *));
+ #define user_path_walk(name,nd) \
+ __user_walk_fd(AT_FDCWD, name, LOOKUP_FOLLOW, nd)
+ #define user_path_walk_link(name,nd) \
+ __user_walk_fd(AT_FDCWD, name, 0, nd)
++
++extern int FASTCALL(__user_walk_it(const char __user *name, unsigned flags, struct nameidata *nd));
++#define user_path_walk_it(name,nd) \
++ __user_walk_it(name, LOOKUP_FOLLOW, nd)
++#define user_path_walk_link_it(name,nd) \
++ __user_walk_it(name, 0, nd)
++extern void intent_release(struct lookup_intent *);
++
+ extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
+ extern int FASTCALL(path_walk(const char *, struct nameidata *));
+ extern int FASTCALL(link_path_walk(const char *, struct nameidata *));
+Index: linux-2.6.15-fc5/include/linux/mount.h
+===================================================================
+--- linux-2.6.15-fc5.orig/include/linux/mount.h 2006-05-31 04:08:22.000000000 +0800
++++ linux-2.6.15-fc5/include/linux/mount.h 2006-05-31 17:24:35.000000000 +0800
+@@ -46,6 +46,8 @@
+ struct list_head mnt_slave; /* slave list entry */
+ struct vfsmount *mnt_master; /* slave is on master->mnt_slave_list */
+ struct namespace *mnt_namespace; /* containing namespace */
++ struct list_head mnt_lustre_list; /* GNS mount list */
++ unsigned long mnt_last_used; /* for GNS auto-umount (jiffies) */
+ int mnt_pinned;
+ };
+
git://git.whamcloud.com / fs / lustre-release.git / blobdiff