--- /dev/null
+---
+ fs/9p/vfs_inode.c | 2
+ fs/exec.c | 8 ++
+ fs/fuse/dir.c | 2
+ fs/inode.c | 1
+ fs/namei.c | 137 ++++++++++++++++++++++++++++++++++++++++++-------
+ fs/namespace.c | 10 +++
+ fs/nfsctl.c | 1
+ fs/open.c | 31 ++++++-----
+ fs/stat.c | 24 ++++++--
+ include/linux/dcache.h | 3 +
+ include/linux/fs.h | 10 +++
+ include/linux/mount.h | 2
+ include/linux/namei.h | 65 ++++++++++++++++++++---
+ 13 files changed, 248 insertions(+), 48 deletions(-)
+
+--- linux-2.6.16.21-0.8.orig/fs/inode.c
++++ linux-2.6.16.21-0.8/fs/inode.c
+@@ -236,6 +236,7 @@ void __iget(struct inode * inode)
+ inodes_stat.nr_unused--;
+ }
+
++EXPORT_SYMBOL(__iget);
+ /**
+ * clear_inode - clear an inode
+ * @inode: inode to clear
+--- linux-2.6.16.21-0.8.orig/fs/open.c
++++ linux-2.6.16.21-0.8/fs/open.c
+@@ -224,12 +224,12 @@ static long do_sys_truncate(const char _
+ 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;
+@@ -494,6 +494,7 @@ asmlinkage long sys_faccessat(int dfd, c
+ 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;
+@@ -518,7 +519,7 @@ asmlinkage long sys_faccessat(int dfd, c
+ 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 */
+@@ -544,8 +545,9 @@ asmlinkage long sys_chdir(const char __u
+ {
+ 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;
+
+@@ -595,8 +597,9 @@ asmlinkage long sys_chroot(const char __
+ {
+ 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;
+
+@@ -817,6 +820,7 @@ static struct file *__dentry_open(struct
+ 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);
+@@ -843,6 +847,7 @@ cleanup_all:
+ f->f_dentry = NULL;
+ f->f_vfsmnt = NULL;
+ cleanup_file:
++ intent_release(f->f_it);
+ put_filp(f);
+ dput(dentry);
+ mntput(mnt);
+@@ -868,6 +873,7 @@ static struct file *do_filp_open(int dfd
+ {
+ int namei_flags, error;
+ struct nameidata nd;
++ intent_init(&nd.intent, IT_OPEN);
+
+ namei_flags = flags;
+ if ((namei_flags+1) & O_ACCMODE)
+@@ -904,19 +910,19 @@ EXPORT_SYMBOL(filp_open);
+ 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);
+@@ -933,7 +939,8 @@ struct file *nameidata_to_filp(struct na
+ 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);
+--- linux-2.6.16.21-0.8.orig/fs/nfsctl.c
++++ linux-2.6.16.21-0.8/fs/nfsctl.c
+@@ -26,6 +26,7 @@ static struct file *do_open(char *name,
+ 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))
+--- linux-2.6.16.21-0.8.orig/fs/namei.c
++++ linux-2.6.16.21-0.8/fs/namei.c
+@@ -337,8 +337,19 @@ int deny_write_access(struct file * file
+ 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 path_release_on_umount(struct namei
+ */
+ 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 @@ static struct dentry * real_lookup(struc
+ {
+ 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 @@ static struct dentry * real_lookup(struc
+ * 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;
+ }
+
+@@ -510,6 +528,7 @@ static __always_inline int __vfs_follow_
+ {
+ int res = 0;
+ char *name;
++
+ if (IS_ERR(link))
+ goto fail;
+
+@@ -519,6 +538,7 @@ static __always_inline int __vfs_follow_
+ /* weird __emul_prefix() stuff did it */
+ goto out;
+ }
++ intent_reset_fs_part(&nd->intent);
+ res = link_path_walk(link, nd);
+ out:
+ if (nd->depth || res || nd->last_type!=LAST_NORM)
+@@ -768,6 +788,33 @@ fail:
+ 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
+@@ -864,7 +911,11 @@ static fastcall int __link_path_walk(con
+ 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;
+@@ -899,6 +950,23 @@ last_component:
+ 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) {
+@@ -906,7 +974,9 @@ last_component:
+ if (err < 0)
+ break;
+ }
++ nd->flags |= LOOKUP_LAST;
+ err = do_lookup(nd, &this, &next);
++ nd->flags &= ~LOOKUP_LAST;
+ if (err)
+ break;
+ inode = next.dentry->d_inode;
+@@ -1148,13 +1218,13 @@ static int __path_lookup_intent_open(int
+
+ 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)
+@@ -1257,7 +1327,7 @@ struct dentry * lookup_hash(struct namei
+ }
+
+ /* 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;
+@@ -1277,11 +1347,17 @@ struct dentry * lookup_one_len(const cha
+ }
+ 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()
+ *
+@@ -1293,8 +1369,9 @@ access:
+ * 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);
+@@ -1306,9 +1383,22 @@ int fastcall __user_walk_fd(int dfd, con
+ 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);
+ }
+
+ /*
+@@ -1588,6 +1678,8 @@ int open_namei(int dfd, const char *path
+ 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.
+ */
+@@ -1602,6 +1694,7 @@ int open_namei(int dfd, const char *path
+ /*
+ * 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;
+@@ -1618,7 +1711,9 @@ int open_namei(int dfd, const char *path
+ 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:
+@@ -1628,9 +1723,9 @@ do_last:
+ goto exit;
+ }
+
+- if (IS_ERR(nd->intent.open.file)) {
++ if (IS_ERR(nd->intent.file)) {
+ mutex_unlock(&dir->d_inode->i_mutex);
+- error = PTR_ERR(nd->intent.open.file);
++ error = PTR_ERR(nd->intent.file);
+ goto exit_dput;
+ }
+
+@@ -1683,7 +1778,7 @@ ok:
+ 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;
+@@ -1726,7 +1821,9 @@ do_link:
+ }
+ 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;
+@@ -2238,6 +2335,8 @@ asmlinkage long sys_linkat(int olddfd, c
+ int error;
+ char * to;
+
++ intent_init(&nd.intent, IT_LOOKUP);
++ intent_init(&old_nd.intent, IT_LOOKUP);
+ if (flags != 0)
+ return -EINVAL;
+
+@@ -2245,7 +2344,7 @@ asmlinkage long sys_linkat(int olddfd, c
+ 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);
+--- linux-2.6.16.21-0.8.orig/fs/stat.c
++++ linux-2.6.16.21-0.8/fs/stat.c
+@@ -38,7 +38,7 @@ void generic_fillattr(struct inode *inod
+
+ 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 @@ int vfs_getattr(struct vfsmount *mnt, st
+ 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 @@ int vfs_getattr(struct vfsmount *mnt, st
+ 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 @@ int vfs_stat_fd(int dfd, char __user *na
+ 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 @@ int vfs_lstat_fd(int dfd, char __user *n
+ 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 @@ int vfs_fstat(unsigned int fd, struct ks
+ {
+ 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;
+--- linux-2.6.16.21-0.8.orig/fs/namespace.c
++++ linux-2.6.16.21-0.8/fs/namespace.c
+@@ -75,6 +75,7 @@ struct vfsmount *alloc_vfsmnt(const char
+ 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);
+@@ -155,6 +156,7 @@ static void __touch_namespace(struct nam
+
+ 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;
+@@ -273,6 +275,9 @@ static inline void __mntput(struct vfsmo
+ {
+ 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);
+ }
+@@ -539,6 +544,8 @@ static int do_umount(struct vfsmount *mn
+ */
+
+ 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();
+@@ -871,6 +878,7 @@ static int do_loopback(struct nameidata
+ 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;
+@@ -956,6 +964,7 @@ static int do_move_mount(struct nameidat
+ 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;
+@@ -1271,6 +1280,7 @@ long do_mount(char *dev_name, char *dir_
+ 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;
+--- linux-2.6.16.21-0.8.orig/fs/exec.c
++++ linux-2.6.16.21-0.8/fs/exec.c
+@@ -128,7 +128,9 @@ asmlinkage long sys_uselib(const char __
+ 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;
+
+@@ -478,7 +480,9 @@ struct file *open_exec(const char *name)
+ 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) {
+--- linux-2.6.16.21-0.8.orig/include/linux/dcache.h
++++ linux-2.6.16.21-0.8/include/linux/dcache.h
+@@ -36,6 +36,9 @@ struct qstr {
+ const unsigned char *name;
+ };
+
++struct inode;
++#include <linux/namei.h>
++
+ struct dentry_stat_t {
+ int nr_dentry;
+ int nr_unused;
+--- linux-2.6.16.21-0.8.orig/include/linux/fs.h
++++ linux-2.6.16.21-0.8/include/linux/fs.h
+@@ -59,6 +59,7 @@ extern int dir_notify_enable;
+
+ #define FMODE_READ 1
+ #define FMODE_WRITE 2
++#define FMODE_EXEC 16
+
+ /* Internal kernel extensions */
+ #define FMODE_LSEEK 4
+@@ -265,6 +266,8 @@ typedef void (dio_iodone_t)(struct kiocb
+ #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 65536 /* called from open path, ie O_TRUNC */
+ #define ATTR_NO_BLOCK 32768 /* Return EAGAIN and don't block on long truncates */
+
+ /*
+@@ -500,6 +503,7 @@ struct inode {
+ struct block_device *i_bdev;
+ struct cdev *i_cdev;
+ int i_cindex;
++ void *i_filterdata;
+
+ __u32 i_generation;
+
+@@ -647,6 +651,7 @@ struct file {
+ 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);
+@@ -1049,7 +1054,9 @@ struct inode_operations {
+ 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);
+@@ -1090,6 +1097,7 @@ struct super_operations {
+ 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 *);
+
+@@ -1292,6 +1300,7 @@ extern int may_umount_tree(struct vfsmou
+ 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 *,
+@@ -1353,6 +1362,7 @@ extern long do_sys_open(int fdf, const c
+ 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 *);
+
+--- linux-2.6.16.21-0.8.orig/include/linux/namei.h
++++ linux-2.6.16.21-0.8/include/linux/namei.h
+@@ -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 +51,23 @@ struct nameidata {
+ 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_reset_fs_part(struct lookup_intent *it)
++{
++ memset(&it->d, 0, sizeof(it->d));
++ it->it_magic = INTENT_MAGIC;
++ it->it_op_release = NULL;
++}
++
++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
+ */
+@@ -48,6 +88,8 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LA
+ #define LOOKUP_PARENT 16
+ #define LOOKUP_NOALT 32
+ #define LOOKUP_REVAL 64
++#define LOOKUP_LAST (0x1000)
++#define LOOKUP_LINK_NOTLAST (0x2000)
+ /*
+ * Intent data
+ */
+@@ -57,10 +99,19 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LA
+
+ 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 *));
+--- linux-2.6.16.21-0.8.orig/include/linux/mount.h
++++ linux-2.6.16.21-0.8/include/linux/mount.h
+@@ -46,6 +46,8 @@ struct vfsmount {
+ 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;
+ };
+
+--- linux-2.6.16.21-0.8.orig/fs/9p/vfs_inode.c
++++ linux-2.6.16.21-0.8/fs/9p/vfs_inode.c
+@@ -469,7 +469,7 @@ v9fs_vfs_create(struct inode *dir, struc
+ perm = unixmode2p9mode(v9ses, mode);
+
+ if (nd && nd->flags & LOOKUP_OPEN)
+- flags = nd->intent.open.flags - 1;
++ flags = nd->intent.flags - 1;
+ else
+ flags = O_RDWR;
+
+--- linux-2.6.16.21-0.8.orig/fs/fuse/dir.c
++++ linux-2.6.16.21-0.8/fs/fuse/dir.c
+@@ -242,7 +242,7 @@ static int fuse_create_open(struct inode
+ struct fuse_entry_out outentry;
+ struct fuse_file *ff;
+ struct file *file;
+- int flags = nd->intent.open.flags - 1;
++ int flags = nd->intent.flags - 1;
+
+ err = -ENOSYS;
+ if (fc->no_create)
git://git.whamcloud.com / fs / lustre-release.git / blobdiff