3 fs/namei.c | 328 +++++++++++++++++++++++++++++++++++++++++--------
4 fs/namespace.c | 28 +++-
5 fs/open.c | 167 ++++++++++++++++++------
7 include/linux/dcache.h | 60 ++++++++
8 include/linux/fs.h | 34 ++++-
12 11 files changed, 564 insertions(+), 126 deletions(-)
14 Index: linux-2.4.18-p4smp/fs/exec.c
15 ===================================================================
16 --- linux-2.4.18-p4smp.orig/fs/exec.c 2004-02-03 01:00:10.000000000 -0500
17 +++ linux-2.4.18-p4smp/fs/exec.c 2004-03-19 16:05:42.000000000 -0500
22 + struct lookup_intent it = { .it_op = IT_OPEN,
23 + .it_flags = FMODE_READ|FMODE_EXEC };
25 - error = user_path_walk(library, &nd);
26 + error = user_path_walk_it(library, &nd, &it);
30 @@ -130,7 +132,8 @@ asmlinkage long sys_uselib(const char *
34 - file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
35 + file = dentry_open_it(nd.dentry, nd.mnt, O_RDONLY, &it);
36 + intent_release(&it);
37 error = PTR_ERR(file);
40 @@ -359,8 +362,9 @@ struct file *open_exec(const char *name)
45 - err = path_lookup(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
46 + struct lookup_intent it = { .it_op = IT_OPEN,
47 + .it_flags = FMODE_READ|FMODE_EXEC };
48 + err = path_lookup_it(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
51 inode = nd.dentry->d_inode;
52 @@ -372,7 +376,8 @@ struct file *open_exec(const char *name)
56 - file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
57 + file = dentry_open_it(nd.dentry, nd.mnt, O_RDONLY, &it);
58 + intent_release(&it);
60 err = deny_write_access(file);
62 @@ -384,6 +389,7 @@ out:
66 + intent_release(&it);
70 @@ -1104,7 +1110,7 @@ int do_coredump(long signr, struct pt_re
72 if (!file->f_op->write)
74 - if (do_truncate(file->f_dentry, 0) != 0)
75 + if (do_truncate(file->f_dentry, 0, 0) != 0)
78 retval = binfmt->core_dump(signr, regs, file);
79 Index: linux-2.4.18-p4smp/fs/dcache.c
80 ===================================================================
81 --- linux-2.4.18-p4smp.orig/fs/dcache.c 2004-02-03 01:00:10.000000000 -0500
82 +++ linux-2.4.18-p4smp/fs/dcache.c 2004-03-19 16:05:42.000000000 -0500
84 spin_unlock(&dcache_lock);
88 + /* network invalidation by Lustre */
89 + if (dentry->d_flags & DCACHE_LUSTRE_INVALID) {
90 + spin_unlock(&dcache_lock);
95 * Check whether to do a partial shrink_dcache
96 * to get rid of unused child entries.
97 @@ -859,13 +866,19 @@ void d_delete(struct dentry * dentry)
98 * Adds a dentry to the hash according to its name.
101 -void d_rehash(struct dentry * entry)
102 +void __d_rehash(struct dentry * entry, int lock)
104 struct list_head *list = d_hash(entry->d_parent, entry->d_name.hash);
105 if (!list_empty(&entry->d_hash)) BUG();
106 - spin_lock(&dcache_lock);
107 + if (lock) spin_lock(&dcache_lock);
108 list_add(&entry->d_hash, list);
109 - spin_unlock(&dcache_lock);
110 + if (lock) spin_unlock(&dcache_lock);
112 +EXPORT_SYMBOL(__d_rehash);
114 +void d_rehash(struct dentry * entry)
116 + __d_rehash(entry, 1);
119 #define do_switch(x,y) do { \
120 Index: linux-2.4.18-p4smp/fs/namespace.c
121 ===================================================================
122 --- linux-2.4.18-p4smp.orig/fs/namespace.c 2004-02-03 01:00:10.000000000 -0500
123 +++ linux-2.4.18-p4smp/fs/namespace.c 2004-03-19 16:05:42.000000000 -0500
126 old_nd->dentry = mnt->mnt_mountpoint;
127 old_nd->mnt = mnt->mnt_parent;
128 + UNPIN(old_nd->dentry, old_nd->mnt, 1);
129 mnt->mnt_parent = mnt;
130 mnt->mnt_mountpoint = mnt->mnt_root;
131 list_del_init(&mnt->mnt_child);
132 @@ -110,6 +111,7 @@ static void attach_mnt(struct vfsmount *
134 mnt->mnt_parent = mntget(nd->mnt);
135 mnt->mnt_mountpoint = dget(nd->dentry);
136 + PIN(nd->dentry, nd->mnt, 1);
137 list_add(&mnt->mnt_hash, mount_hashtable+hash(nd->mnt, nd->dentry));
138 list_add(&mnt->mnt_child, &nd->mnt->mnt_mounts);
139 nd->dentry->d_mounted++;
140 @@ -485,14 +487,17 @@ static int do_loopback(struct nameidata
142 struct nameidata old_nd;
143 struct vfsmount *mnt = NULL;
144 + struct lookup_intent it = { .it_op = IT_GETATTR };
145 int err = mount_is_safe(nd);
148 if (!old_name || !*old_name)
150 - err = path_lookup(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd);
152 + err = path_lookup_it(old_name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &old_nd, &it);
154 + intent_release(&it);
158 down_write(¤t->namespace->sem);
160 @@ -515,6 +520,7 @@ static int do_loopback(struct nameidata
163 up_write(¤t->namespace->sem);
164 + intent_release(&it);
165 path_release(&old_nd);
168 @@ -698,6 +704,7 @@ long do_mount(char * dev_name, char * di
169 unsigned long flags, void *data_page)
172 + struct lookup_intent it = { .it_op = IT_GETATTR };
176 @@ -722,10 +729,11 @@ long do_mount(char * dev_name, char * di
177 flags &= ~(MS_NOSUID|MS_NOEXEC|MS_NODEV);
179 /* ... and get the mountpoint */
180 - retval = path_lookup(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd);
182 + retval = path_lookup_it(dir_name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, &nd, &it);
184 + intent_release(&it);
188 if (flags & MS_REMOUNT)
189 retval = do_remount(&nd, flags & ~MS_REMOUNT, mnt_flags,
191 @@ -736,6 +744,8 @@ long do_mount(char * dev_name, char * di
193 retval = do_add_mount(&nd, type_page, flags, mnt_flags,
194 dev_name, data_page);
196 + intent_release(&it);
200 @@ -901,6 +911,8 @@ asmlinkage long sys_pivot_root(const cha
202 struct vfsmount *tmp;
203 struct nameidata new_nd, old_nd, parent_nd, root_parent, user_nd;
204 + struct lookup_intent new_it = { .it_op = IT_GETATTR };
205 + struct lookup_intent old_it = { .it_op = IT_GETATTR };
208 if (!capable(CAP_SYS_ADMIN))
209 @@ -908,14 +920,14 @@ asmlinkage long sys_pivot_root(const cha
213 - error = __user_walk(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd);
214 + error = __user_walk_it(new_root, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &new_nd, &new_it);
218 if (!check_mnt(new_nd.mnt))
221 - error = __user_walk(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd);
222 + error = __user_walk_it(put_old, LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY, &old_nd, &old_it);
226 @@ -970,8 +982,10 @@ out2:
227 up(&old_nd.dentry->d_inode->i_zombie);
228 up_write(¤t->namespace->sem);
229 path_release(&user_nd);
230 + intent_release(&old_it);
231 path_release(&old_nd);
233 + intent_release(&new_it);
234 path_release(&new_nd);
237 Index: linux-2.4.18-p4smp/fs/namei.c
238 ===================================================================
239 --- linux-2.4.18-p4smp.orig/fs/namei.c 2004-02-03 01:00:10.000000000 -0500
240 +++ linux-2.4.18-p4smp/fs/namei.c 2004-03-19 16:06:19.000000000 -0500
242 * XEmacs seems to be relying on it...
245 +void intent_release(struct lookup_intent *it)
247 + if (it && it->it_op_release)
248 + it->it_op_release(it);
252 /* In order to reduce some races, while at the same time doing additional
253 * checking and hopefully speeding things up, we copy filenames to the
254 * kernel data space before using them..
255 @@ -260,10 +267,19 @@ void path_release(struct nameidata *nd)
256 * Internal lookup() using the new generic dcache.
259 -static struct dentry * cached_lookup(struct dentry * parent, struct qstr * name, int flags)
260 +static struct dentry *cached_lookup(struct dentry *parent, struct qstr *name,
261 + int flags, struct lookup_intent *it)
263 struct dentry * dentry = d_lookup(parent, name);
265 + if (dentry && dentry->d_op && dentry->d_op->d_revalidate_it) {
266 + if (!dentry->d_op->d_revalidate_it(dentry, flags, it) &&
267 + !d_invalidate(dentry)) {
273 if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
274 if (!dentry->d_op->d_revalidate(dentry, flags) && !d_invalidate(dentry)) {
276 @@ -281,11 +297,15 @@ static struct dentry * cached_lookup(str
277 * make sure that nobody added the entry to the dcache in the meantime..
280 -static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, int flags)
281 +static struct dentry *real_lookup(struct dentry *parent, struct qstr *name,
282 + int flags, struct lookup_intent *it)
284 struct dentry * result;
285 struct inode *dir = parent->d_inode;
292 * First re-do the cached lookup just in case it was created
293 @@ -300,6 +320,9 @@ static struct dentry * real_lookup(struc
294 result = ERR_PTR(-ENOMEM);
297 + if (dir->i_op->lookup_it)
298 + result = dir->i_op->lookup_it(dir, dentry, it, flags);
300 result = dir->i_op->lookup(dir, dentry);
303 @@ -321,6 +344,15 @@ static struct dentry * real_lookup(struc
305 result = ERR_PTR(-ENOENT);
307 + } else if (result->d_op && result->d_op->d_revalidate_it) {
308 + if (!result->d_op->d_revalidate_it(result, flags, it) &&
309 + !d_invalidate(result)) {
312 + result = ERR_PTR(-ESTALE);
313 + if (!IS_ERR(result))
319 @@ -334,7 +366,8 @@ int max_recursive_link = 5;
320 * Without that kind of total limit, nasty chains of consecutive
321 * symlinks can cause almost arbitrarily long lookups.
323 -static inline int do_follow_link(struct dentry *dentry, struct nameidata *nd)
324 +static inline int do_follow_link(struct dentry *dentry, struct nameidata *nd,
325 + struct lookup_intent *it)
328 if (current->link_count >= max_recursive_link)
329 @@ -348,10 +381,12 @@ static inline int do_follow_link(struct
330 current->link_count++;
331 current->total_link_count++;
332 UPDATE_ATIME(dentry->d_inode);
334 err = dentry->d_inode->i_op->follow_link(dentry, nd);
335 current->link_count--;
338 + intent_release(it);
342 @@ -381,7 +416,8 @@ int follow_up(struct vfsmount **mnt, str
343 return __follow_up(mnt, dentry);
346 -static inline int __follow_down(struct vfsmount **mnt, struct dentry **dentry)
347 +static inline int __follow_down(struct vfsmount **mnt, struct dentry **dentry,
348 + struct lookup_intent *it)
350 struct vfsmount *mounted;
352 @@ -401,7 +437,7 @@ static inline int __follow_down(struct v
354 int follow_down(struct vfsmount **mnt, struct dentry **dentry)
356 - return __follow_down(mnt,dentry);
357 + return __follow_down(mnt,dentry,NULL);
360 static inline void follow_dotdot(struct nameidata *nd)
361 @@ -437,7 +473,7 @@ static inline void follow_dotdot(struct
365 - while (d_mountpoint(nd->dentry) && __follow_down(&nd->mnt, &nd->dentry))
366 + while (d_mountpoint(nd->dentry) && __follow_down(&nd->mnt, &nd->dentry, NULL))
370 @@ -449,7 +485,8 @@ static inline void follow_dotdot(struct
372 * We expect 'base' to be positive and a directory.
374 -int link_path_walk(const char * name, struct nameidata *nd)
375 +int link_path_walk_it(const char *name, struct nameidata *nd,
376 + struct lookup_intent *it)
378 struct dentry *dentry;
380 @@ -526,18 +563,18 @@ int link_path_walk(const char * name, st
383 /* This does the actual lookups.. */
384 - dentry = cached_lookup(nd->dentry, &this, LOOKUP_CONTINUE);
385 + dentry = cached_lookup(nd->dentry, &this, LOOKUP_CONTINUE, NULL);
387 err = -EWOULDBLOCKIO;
390 - dentry = real_lookup(nd->dentry, &this, LOOKUP_CONTINUE);
391 + dentry = real_lookup(nd->dentry, &this, LOOKUP_CONTINUE, NULL);
392 err = PTR_ERR(dentry);
396 /* Check mountpoints.. */
397 - while (d_mountpoint(dentry) && __follow_down(&nd->mnt, &dentry))
398 + while (d_mountpoint(dentry) && __follow_down(&nd->mnt, &dentry, NULL))
402 @@ -548,8 +585,8 @@ int link_path_walk(const char * name, st
406 - if (inode->i_op->follow_link) {
407 - err = do_follow_link(dentry, nd);
408 + if (inode->i_op->follow_link || inode->i_op->follow_link2) {
409 + err = do_follow_link(dentry, nd, NULL);
413 @@ -565,7 +602,7 @@ int link_path_walk(const char * name, st
417 - if (!inode->i_op->lookup)
418 + if (!inode->i_op->lookup && !inode->i_op->lookup_it)
421 /* here ends the main loop */
422 @@ -592,22 +629,23 @@ last_component:
426 - dentry = cached_lookup(nd->dentry, &this, 0);
427 + dentry = cached_lookup(nd->dentry, &this, 0, it);
429 err = -EWOULDBLOCKIO;
432 - dentry = real_lookup(nd->dentry, &this, 0);
433 + dentry = real_lookup(nd->dentry, &this, 0, it);
434 err = PTR_ERR(dentry);
438 - while (d_mountpoint(dentry) && __follow_down(&nd->mnt, &dentry))
439 + while (d_mountpoint(dentry) && __follow_down(&nd->mnt, &dentry, it))
441 inode = dentry->d_inode;
442 if ((lookup_flags & LOOKUP_FOLLOW)
443 - && inode && inode->i_op && inode->i_op->follow_link) {
444 - err = do_follow_link(dentry, nd);
445 + && inode && inode->i_op &&
446 + (inode->i_op->follow_link || inode->i_op->follow_link2)) {
447 + err = do_follow_link(dentry, nd, it);
451 @@ -621,7 +659,8 @@ last_component:
453 if (lookup_flags & LOOKUP_DIRECTORY) {
455 - if (!inode->i_op || !inode->i_op->lookup)
456 + if (!inode->i_op ||
457 + (!inode->i_op->lookup && !inode->i_op->lookup_it))
461 @@ -645,7 +684,26 @@ return_reval:
462 * Check the cached dentry for staleness.
465 - if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
466 + if (dentry && dentry->d_op && dentry->d_op->d_revalidate_it) {
468 + if (!dentry->d_op->d_revalidate_it(dentry, 0, it)) {
469 + struct dentry *new;
470 + err = permission(dentry->d_parent->d_inode,
474 + new = real_lookup(dentry->d_parent,
475 + &dentry->d_name, 0, NULL);
476 + d_invalidate(dentry);
479 + err = PTR_ERR(new);
484 + if (!nd->dentry->d_inode)
487 + else if (dentry && dentry->d_op && dentry->d_op->d_revalidate){
489 if (!dentry->d_op->d_revalidate(dentry, 0)) {
490 d_invalidate(dentry);
491 @@ -658,15 +716,28 @@ out_dput:
496 + intent_release(it);
502 +int link_path_walk(const char * name, struct nameidata *nd)
504 + return link_path_walk_it(name, nd, NULL);
507 +int path_walk_it(const char * name, struct nameidata *nd, struct lookup_intent *it)
509 + current->total_link_count = 0;
510 + return link_path_walk_it(name, nd, it);
513 int path_walk(const char * name, struct nameidata *nd)
515 current->total_link_count = 0;
516 - return link_path_walk(name, nd);
517 + return link_path_walk_it(name, nd, NULL);
521 @@ -751,6 +822,17 @@ walk_init_root(const char *name, struct
525 +int path_lookup_it(const char *path, unsigned flags, struct nameidata *nd,
526 + struct lookup_intent *it)
529 + if (path_init(path, flags, nd))
530 + error = path_walk_it(path, nd, it);
536 int path_lookup(const char *path, unsigned flags, struct nameidata *nd)
539 @@ -765,6 +847,7 @@ int path_init(const char *name, unsigned
541 nd->last_type = LAST_ROOT; /* if there are only slashes... */
545 return walk_init_root(name,nd);
546 read_lock(¤t->fs->lock);
547 @@ -779,7 +862,8 @@ int path_init(const char *name, unsigned
548 * needs parent already locked. Doesn't follow mounts.
551 -struct dentry * lookup_hash(struct qstr *name, struct dentry * base)
552 +struct dentry * lookup_hash_it(struct qstr *name, struct dentry * base,
553 + struct lookup_intent *it)
555 struct dentry * dentry;
557 @@ -802,13 +886,16 @@ struct dentry * lookup_hash(struct qstr
561 - dentry = cached_lookup(base, name, 0);
562 + dentry = cached_lookup(base, name, 0, it);
564 struct dentry *new = d_alloc(base, name);
565 dentry = ERR_PTR(-ENOMEM);
569 + if (inode->i_op->lookup_it)
570 + dentry = inode->i_op->lookup_it(inode, new, it, 0);
572 dentry = inode->i_op->lookup(inode, new);
575 @@ -820,6 +907,12 @@ out:
579 +struct dentry * lookup_hash(struct qstr *name, struct dentry * base)
581 + return lookup_hash_it(name, base, NULL);
586 struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
588 @@ -841,7 +934,7 @@ struct dentry * lookup_one_len(const cha
590 this.hash = end_name_hash(hash);
592 - return lookup_hash(&this, base);
593 + return lookup_hash_it(&this, base, NULL);
595 return ERR_PTR(-EACCES);
597 @@ -872,6 +965,23 @@ int __user_walk(const char *name, unsign
601 +int __user_walk_it(const char *name, unsigned flags, struct nameidata *nd,
602 + struct lookup_intent *it)
607 + tmp = getname(name);
608 + err = PTR_ERR(tmp);
609 + if (!IS_ERR(tmp)) {
611 + if (path_init(tmp, flags, nd))
612 + err = path_walk_it(tmp, nd, it);
619 * It's inline, so penalty for filesystems that don't use sticky bit is
621 @@ -969,6 +1079,37 @@ static inline int lookup_flags(unsigned
625 +static int vfs_create_it(struct inode *dir, struct dentry *dentry, int mode,
626 + struct lookup_intent *it)
633 + down(&dir->i_zombie);
634 + error = may_create(dir, dentry);
638 + error = -EACCES; /* shouldn't it be ENOSYS? */
639 + if (!dir->i_op || (!dir->i_op->create && !dir->i_op->create_it))
644 + if (dir->i_op->create_it)
645 + error = dir->i_op->create_it(dir, dentry, mode, it);
647 + error = dir->i_op->create(dir, dentry, mode);
650 + up(&dir->i_zombie);
652 + inode_dir_notify(dir, DN_CREATE);
656 int vfs_create(struct inode *dir, struct dentry *dentry, int mode)
659 @@ -1045,14 +1186,17 @@ int may_open(struct nameidata *nd, int a
660 return get_lease(inode, flag);
663 +extern struct file *dentry_open_it(struct dentry *dentry, struct vfsmount *mnt,
664 + int flags, struct lookup_intent *it);
666 struct file *filp_open(const char * pathname, int open_flags, int mode)
668 int acc_mode, error = 0;
669 - struct inode *inode;
670 struct dentry *dentry;
672 int flag = open_flags;
674 + struct lookup_intent it = { .it_op = IT_OPEN};
677 if (!capable(CAP_SYS_ADMIN))
678 @@ -1063,13 +1207,14 @@ struct file *filp_open(const char * path
682 + it.it_flags = flag;
683 acc_mode = ACC_MODE(flag);
686 * The simplest case - just a plain lookup.
688 if (!(flag & O_CREAT)) {
689 - error = path_lookup(pathname, lookup_flags(flag), &nd);
690 + error = path_lookup_it(pathname, lookup_flags(flag), &nd, &it);
692 return ERR_PTR(error);
694 @@ -1079,6 +1224,8 @@ struct file *filp_open(const char * path
696 * Create - we need to know the parent.
698 + it.it_create_mode = mode;
699 + it.it_op |= IT_CREAT;
700 error = path_lookup(pathname, LOOKUP_PARENT, &nd);
702 return ERR_PTR(error);
703 @@ -1094,7 +1241,7 @@ struct file *filp_open(const char * path
706 down(&dir->d_inode->i_sem);
707 - dentry = lookup_hash(&nd.last, nd.dentry);
708 + dentry = lookup_hash_it(&nd.last, nd.dentry, &it);
711 error = PTR_ERR(dentry);
712 @@ -1103,10 +1250,11 @@ do_last:
716 + it.it_create_mode = mode;
717 /* Negative dentry, just create the file */
718 if (!dentry->d_inode) {
719 - error = vfs_create(dir->d_inode, dentry,
720 - mode & ~current->fs->umask);
721 + error = vfs_create_it(dir->d_inode, dentry,
722 + mode & ~current->fs->umask, &it);
723 up(&dir->d_inode->i_sem);
726 @@ -1132,12 +1280,12 @@ do_last:
728 if (flag & O_NOFOLLOW)
730 - while (__follow_down(&nd.mnt,&dentry) && d_mountpoint(dentry));
731 + while (__follow_down(&nd.mnt,&dentry, &it) && d_mountpoint(dentry));
734 if (!dentry->d_inode)
736 - if (dentry->d_inode->i_op && dentry->d_inode->i_op->follow_link)
737 + if (dentry->d_inode->i_op && (dentry->d_inode->i_op->follow_link))
741 @@ -1152,11 +1300,13 @@ ok:
742 if (!S_ISREG(nd.dentry->d_inode->i_mode))
743 open_flags &= ~O_TRUNC;
745 - return dentry_open(nd.dentry, nd.mnt, open_flags);
746 + return dentry_open_it(nd.dentry, nd.mnt, open_flags, &it);
749 + intent_release(&it);
752 + intent_release(&it);
754 return ERR_PTR(error);
756 @@ -1175,10 +1325,14 @@ do_link:
757 * are done. Procfs-like symlinks just set LAST_BIND.
759 UPDATE_ATIME(dentry->d_inode);
761 error = dentry->d_inode->i_op->follow_link(dentry, &nd);
763 + intent_release(&it);
768 + return ERR_PTR(error);
769 if (nd.last_type == LAST_BIND) {
772 @@ -1197,13 +1351,15 @@ do_link:
775 down(&dir->d_inode->i_sem);
776 - dentry = lookup_hash(&nd.last, nd.dentry);
777 + dentry = lookup_hash_it(&nd.last, nd.dentry, &it);
778 putname(nd.last.name);
784 -static struct dentry *lookup_create(struct nameidata *nd, int is_dir)
785 +static struct dentry *lookup_create(struct nameidata *nd, int is_dir,
786 + struct lookup_intent *it)
788 struct dentry *dentry;
790 @@ -1211,7 +1367,7 @@ static struct dentry *lookup_create(stru
791 dentry = ERR_PTR(-EEXIST);
792 if (nd->last_type != LAST_NORM)
794 - dentry = lookup_hash(&nd->last, nd->dentry);
795 + dentry = lookup_hash_it(&nd->last, nd->dentry, it);
798 if (!is_dir && nd->last.name[nd->last.len] && !dentry->d_inode)
799 @@ -1267,7 +1423,20 @@ asmlinkage long sys_mknod(const char * f
800 error = path_lookup(tmp, LOOKUP_PARENT, &nd);
803 - dentry = lookup_create(&nd, 0);
805 + if (nd.last_type != LAST_NORM) {
809 + if (nd.dentry->d_inode->i_op->mknod_raw) {
810 + struct inode_operations *op = nd.dentry->d_inode->i_op;
811 + error = op->mknod_raw(&nd, mode, dev);
812 + /* the file system wants to use normal vfs path now */
813 + if (error != -EOPNOTSUPP)
817 + dentry = lookup_create(&nd, 0, NULL);
818 error = PTR_ERR(dentry);
820 mode &= ~current->fs->umask;
821 @@ -1288,6 +1453,7 @@ asmlinkage long sys_mknod(const char * f
824 up(&nd.dentry->d_inode->i_sem);
829 @@ -1335,7 +1501,18 @@ asmlinkage long sys_mkdir(const char * p
830 error = path_lookup(tmp, LOOKUP_PARENT, &nd);
833 - dentry = lookup_create(&nd, 1);
834 + if (nd.last_type != LAST_NORM) {
838 + if (nd.dentry->d_inode->i_op->mkdir_raw) {
839 + struct inode_operations *op = nd.dentry->d_inode->i_op;
840 + error = op->mkdir_raw(&nd, mode);
841 + /* the file system wants to use normal vfs path now */
842 + if (error != -EOPNOTSUPP)
845 + dentry = lookup_create(&nd, 1, NULL);
846 error = PTR_ERR(dentry);
847 if (!IS_ERR(dentry)) {
848 error = vfs_mkdir(nd.dentry->d_inode, dentry,
849 @@ -1343,6 +1516,7 @@ asmlinkage long sys_mkdir(const char * p
852 up(&nd.dentry->d_inode->i_sem);
857 @@ -1443,8 +1617,16 @@ asmlinkage long sys_rmdir(const char * p
861 + if (nd.dentry->d_inode->i_op->rmdir_raw) {
862 + struct inode_operations *op = nd.dentry->d_inode->i_op;
864 + error = op->rmdir_raw(&nd);
865 + /* the file system wants to use normal vfs path now */
866 + if (error != -EOPNOTSUPP)
869 down(&nd.dentry->d_inode->i_sem);
870 - dentry = lookup_hash(&nd.last, nd.dentry);
871 + dentry = lookup_hash_it(&nd.last, nd.dentry, NULL);
872 error = PTR_ERR(dentry);
873 if (!IS_ERR(dentry)) {
874 error = vfs_rmdir(nd.dentry->d_inode, dentry);
875 @@ -1502,8 +1684,15 @@ asmlinkage long sys_unlink(const char *
877 if (nd.last_type != LAST_NORM)
879 + if (nd.dentry->d_inode->i_op->unlink_raw) {
880 + struct inode_operations *op = nd.dentry->d_inode->i_op;
881 + error = op->unlink_raw(&nd);
882 + /* the file system wants to use normal vfs path now */
883 + if (error != -EOPNOTSUPP)
886 down(&nd.dentry->d_inode->i_sem);
887 - dentry = lookup_hash(&nd.last, nd.dentry);
888 + dentry = lookup_hash_it(&nd.last, nd.dentry, NULL);
889 error = PTR_ERR(dentry);
890 if (!IS_ERR(dentry)) {
891 /* Why not before? Because we want correct error value */
892 @@ -1570,15 +1759,27 @@ asmlinkage long sys_symlink(const char *
893 error = path_lookup(to, LOOKUP_PARENT, &nd);
896 - dentry = lookup_create(&nd, 0);
897 + if (nd.last_type != LAST_NORM) {
901 + if (nd.dentry->d_inode->i_op->symlink_raw) {
902 + struct inode_operations *op = nd.dentry->d_inode->i_op;
903 + error = op->symlink_raw(&nd, from);
904 + /* the file system wants to use normal vfs path now */
905 + if (error != -EOPNOTSUPP)
908 + dentry = lookup_create(&nd, 0, NULL);
909 error = PTR_ERR(dentry);
910 if (!IS_ERR(dentry)) {
911 error = vfs_symlink(nd.dentry->d_inode, dentry, from);
914 up(&nd.dentry->d_inode->i_sem);
922 @@ -1654,7 +1851,18 @@ asmlinkage long sys_link(const char * ol
924 if (old_nd.mnt != nd.mnt)
926 - new_dentry = lookup_create(&nd, 0);
927 + if (nd.last_type != LAST_NORM) {
931 + if (nd.dentry->d_inode->i_op->link_raw) {
932 + struct inode_operations *op = nd.dentry->d_inode->i_op;
933 + error = op->link_raw(&old_nd, &nd);
934 + /* the file system wants to use normal vfs path now */
935 + if (error != -EOPNOTSUPP)
938 + new_dentry = lookup_create(&nd, 0, NULL);
939 error = PTR_ERR(new_dentry);
940 if (!IS_ERR(new_dentry)) {
941 error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
942 @@ -1698,7 +1902,7 @@ exit:
945 int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
946 - struct inode *new_dir, struct dentry *new_dentry)
947 + struct inode *new_dir, struct dentry *new_dentry)
950 struct inode *target;
951 @@ -1777,7 +1981,7 @@ out_unlock:
954 int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
955 - struct inode *new_dir, struct dentry *new_dentry)
956 + struct inode *new_dir, struct dentry *new_dentry)
960 @@ -1865,9 +2069,18 @@ static inline int do_rename(const char *
961 if (newnd.last_type != LAST_NORM)
964 + if (old_dir->d_inode->i_op->rename_raw) {
966 + error = old_dir->d_inode->i_op->rename_raw(&oldnd, &newnd);
968 + /* the file system wants to use normal vfs path now */
969 + if (error != -EOPNOTSUPP)
973 double_lock(new_dir, old_dir);
975 - old_dentry = lookup_hash(&oldnd.last, old_dir);
976 + old_dentry = lookup_hash_it(&oldnd.last, old_dir, NULL);
977 error = PTR_ERR(old_dentry);
978 if (IS_ERR(old_dentry))
980 @@ -1883,16 +2096,16 @@ static inline int do_rename(const char *
981 if (newnd.last.name[newnd.last.len])
984 - new_dentry = lookup_hash(&newnd.last, new_dir);
985 + new_dentry = lookup_hash_it(&newnd.last, new_dir, NULL);
986 error = PTR_ERR(new_dentry);
987 if (IS_ERR(new_dentry))
992 error = vfs_rename(old_dir->d_inode, old_dentry,
993 new_dir->d_inode, new_dentry);
999 @@ -1943,12 +2156,17 @@ out:
1003 -__vfs_follow_link(struct nameidata *nd, const char *link)
1004 +__vfs_follow_link(struct nameidata *nd, const char *link,
1005 + struct lookup_intent *it)
1013 + else if (it != nd->intent)
1014 + printk("it != nd->intent: tell phil@clusterfs.com\n");
1018 @@ -1956,7 +2174,7 @@ __vfs_follow_link(struct nameidata *nd,
1019 /* weird __emul_prefix() stuff did it */
1022 - res = link_path_walk(link, nd);
1023 + res = link_path_walk_it(link, nd, it);
1025 if (current->link_count || res || nd->last_type!=LAST_NORM)
1027 @@ -1978,7 +2196,13 @@ fail:
1029 int vfs_follow_link(struct nameidata *nd, const char *link)
1031 - return __vfs_follow_link(nd, link);
1032 + return __vfs_follow_link(nd, link, NULL);
1035 +int vfs_follow_link_it(struct nameidata *nd, const char *link,
1036 + struct lookup_intent *it)
1038 + return __vfs_follow_link(nd, link, it);
1041 /* get the link contents into pagecache */
1042 @@ -2020,7 +2244,7 @@ int page_follow_link(struct dentry *dent
1044 struct page *page = NULL;
1045 char *s = page_getlink(dentry, &page);
1046 - int res = __vfs_follow_link(nd, s);
1047 + int res = __vfs_follow_link(nd, s, NULL);
1050 page_cache_release(page);
1051 Index: linux-2.4.18-p4smp/fs/open.c
1052 ===================================================================
1053 --- linux-2.4.18-p4smp.orig/fs/open.c 2004-02-03 01:00:10.000000000 -0500
1054 +++ linux-2.4.18-p4smp/fs/open.c 2004-03-19 16:05:42.000000000 -0500
1056 #include <asm/uaccess.h>
1058 #define special_file(m) (S_ISCHR(m)||S_ISBLK(m)||S_ISFIFO(m)||S_ISSOCK(m))
1059 +extern int path_walk_it(const char *name, struct nameidata *nd,
1060 + struct lookup_intent *it);
1062 int vfs_statfs(struct super_block *sb, struct statfs *buf)
1064 @@ -95,9 +97,10 @@ void fd_install(unsigned int fd, struct
1065 write_unlock(&files->file_lock);
1068 -int do_truncate(struct dentry *dentry, loff_t length)
1069 +int do_truncate(struct dentry *dentry, loff_t length, int called_from_open)
1071 struct inode *inode = dentry->d_inode;
1072 + struct inode_operations *op = dentry->d_inode->i_op;
1074 struct iattr newattrs;
1076 @@ -108,7 +111,13 @@ int do_truncate(struct dentry *dentry, l
1077 down(&inode->i_sem);
1078 newattrs.ia_size = length;
1079 newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
1080 - error = notify_change(dentry, &newattrs);
1081 + if (called_from_open)
1082 + newattrs.ia_valid |= ATTR_FROM_OPEN;
1083 + if (op->setattr_raw) {
1084 + newattrs.ia_valid |= ATTR_RAW;
1085 + error = op->setattr_raw(inode, &newattrs);
1087 + error = notify_change(dentry, &newattrs);
1091 @@ -118,12 +127,13 @@ static inline long do_sys_truncate(const
1092 struct nameidata nd;
1093 struct inode * inode;
1095 + struct lookup_intent it = { .it_op = IT_GETATTR };
1098 if (length < 0) /* sorry, but loff_t says... */
1101 - error = user_path_walk(path, &nd);
1102 + error = user_path_walk_it(path, &nd, &it);
1105 inode = nd.dentry->d_inode;
1106 @@ -163,11 +173,13 @@ static inline long do_sys_truncate(const
1107 error = locks_verify_truncate(inode, NULL, length);
1110 - error = do_truncate(nd.dentry, length);
1111 + intent_release(&it);
1112 + error = do_truncate(nd.dentry, length, 0);
1114 put_write_access(inode);
1117 + intent_release(&it);
1121 @@ -215,7 +227,7 @@ static inline long do_sys_ftruncate(unsi
1123 error = locks_verify_truncate(inode, file, length);
1125 - error = do_truncate(dentry, length);
1126 + error = do_truncate(dentry, length, 0);
1130 @@ -260,11 +272,13 @@ asmlinkage long sys_utime(char * filenam
1131 struct inode * inode;
1132 struct iattr newattrs;
1134 - error = user_path_walk(filename, &nd);
1135 + error = user_path_walk_it(filename, &nd, NULL);
1138 inode = nd.dentry->d_inode;
1140 + /* this is safe without a Lustre lock because it only depends
1141 + on the super block */
1143 if (IS_RDONLY(inode))
1145 @@ -279,11 +293,25 @@ asmlinkage long sys_utime(char * filenam
1148 newattrs.ia_valid |= ATTR_ATIME_SET | ATTR_MTIME_SET;
1152 + if (inode->i_op->setattr_raw) {
1153 + struct inode_operations *op = nd.dentry->d_inode->i_op;
1155 + newattrs.ia_valid |= ATTR_RAW;
1156 + error = op->setattr_raw(inode, &newattrs);
1157 + /* the file system wants to use normal vfs path now */
1158 + if (error != -EOPNOTSUPP)
1159 + goto dput_and_out;
1164 if (current->fsuid != inode->i_uid &&
1165 (error = permission(inode,MAY_WRITE)) != 0)
1169 error = notify_change(nd.dentry, &newattrs);
1172 @@ -304,12 +332,14 @@ asmlinkage long sys_utimes(char * filena
1173 struct inode * inode;
1174 struct iattr newattrs;
1176 - error = user_path_walk(filename, &nd);
1177 + error = user_path_walk_it(filename, &nd, NULL);
1181 inode = nd.dentry->d_inode;
1183 + /* this is safe without a Lustre lock because it only depends
1184 + on the super block */
1186 if (IS_RDONLY(inode))
1188 @@ -324,7 +354,20 @@ asmlinkage long sys_utimes(char * filena
1189 newattrs.ia_atime = times[0].tv_sec;
1190 newattrs.ia_mtime = times[1].tv_sec;
1191 newattrs.ia_valid |= ATTR_ATIME_SET | ATTR_MTIME_SET;
1195 + if (inode->i_op->setattr_raw) {
1196 + struct inode_operations *op = nd.dentry->d_inode->i_op;
1198 + newattrs.ia_valid |= ATTR_RAW;
1199 + error = op->setattr_raw(inode, &newattrs);
1200 + /* the file system wants to use normal vfs path now */
1201 + if (error != -EOPNOTSUPP)
1202 + goto dput_and_out;
1207 if (current->fsuid != inode->i_uid &&
1208 (error = permission(inode,MAY_WRITE)) != 0)
1210 @@ -347,6 +390,7 @@ asmlinkage long sys_access(const char *
1211 int old_fsuid, old_fsgid;
1212 kernel_cap_t old_cap;
1214 + struct lookup_intent it = { .it_op = IT_GETATTR };
1216 if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */
1218 @@ -364,13 +408,14 @@ asmlinkage long sys_access(const char *
1220 current->cap_effective = current->cap_permitted;
1222 - res = user_path_walk(filename, &nd);
1223 + res = user_path_walk_it(filename, &nd, &it);
1225 res = permission(nd.dentry->d_inode, mode);
1226 /* SuS v2 requires we report a read only fs too */
1227 if(!res && (mode & S_IWOTH) && IS_RDONLY(nd.dentry->d_inode)
1228 && !special_file(nd.dentry->d_inode->i_mode))
1230 + intent_release(&it);
1234 @@ -385,8 +430,11 @@ asmlinkage long sys_chdir(const char * f
1237 struct nameidata nd;
1238 + struct lookup_intent it = { .it_op = IT_GETATTR };
1240 - error = __user_walk(filename,LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY,&nd);
1241 + error = __user_walk_it(filename,
1242 + LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY,
1247 @@ -397,6 +445,7 @@ asmlinkage long sys_chdir(const char * f
1248 set_fs_pwd(current->fs, nd.mnt, nd.dentry);
1251 + intent_release(&it);
1255 @@ -436,9 +485,10 @@ asmlinkage long sys_chroot(const char *
1258 struct nameidata nd;
1259 + struct lookup_intent it = { .it_op = IT_GETATTR };
1261 - error = __user_walk(filename, LOOKUP_POSITIVE | LOOKUP_FOLLOW |
1262 - LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
1263 + error = __user_walk_it(filename, LOOKUP_POSITIVE | LOOKUP_FOLLOW |
1264 + LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd, &it);
1268 @@ -454,39 +504,56 @@ asmlinkage long sys_chroot(const char *
1272 + intent_release(&it);
1278 -asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
1279 +int chmod_common(struct dentry *dentry, mode_t mode)
1281 - struct inode * inode;
1282 - struct dentry * dentry;
1283 - struct file * file;
1285 + struct inode *inode = dentry->d_inode;
1286 struct iattr newattrs;
1291 + if (IS_RDONLY(inode))
1294 - dentry = file->f_dentry;
1295 - inode = dentry->d_inode;
1296 + if (inode->i_op->setattr_raw) {
1297 + newattrs.ia_mode = mode;
1298 + newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
1299 + newattrs.ia_valid |= ATTR_RAW;
1300 + err = inode->i_op->setattr_raw(inode, &newattrs);
1301 + /* the file system wants to use normal vfs path now */
1302 + if (err != -EOPNOTSUPP)
1307 - if (IS_RDONLY(inode))
1310 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1314 if (mode == (mode_t) -1)
1315 mode = inode->i_mode;
1316 newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
1317 newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
1318 err = notify_change(dentry, &newattrs);
1325 +asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
1327 + struct file * file;
1334 + err = chmod_common(file->f_dentry, mode);
1339 @@ -495,30 +562,14 @@ out:
1340 asmlinkage long sys_chmod(const char * filename, mode_t mode)
1342 struct nameidata nd;
1343 - struct inode * inode;
1345 - struct iattr newattrs;
1347 error = user_path_walk(filename, &nd);
1350 - inode = nd.dentry->d_inode;
1353 - if (IS_RDONLY(inode))
1354 - goto dput_and_out;
1357 - if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1358 - goto dput_and_out;
1360 - if (mode == (mode_t) -1)
1361 - mode = inode->i_mode;
1362 - newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
1363 - newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
1364 - error = notify_change(nd.dentry, &newattrs);
1365 + error = chmod_common(nd.dentry, mode);
1371 @@ -538,6 +589,20 @@ static int chown_common(struct dentry *
1373 if (IS_RDONLY(inode))
1376 + if (inode->i_op->setattr_raw) {
1377 + struct inode_operations *op = dentry->d_inode->i_op;
1379 + newattrs.ia_uid = user;
1380 + newattrs.ia_gid = group;
1381 + newattrs.ia_valid = ATTR_UID | ATTR_GID | ATTR_CTIME;
1382 + newattrs.ia_valid |= ATTR_RAW;
1383 + error = op->setattr_raw(inode, &newattrs);
1384 + /* the file system wants to use normal vfs path now */
1385 + if (error != -EOPNOTSUPP)
1390 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1392 @@ -628,7 +693,8 @@ extern ssize_t do_readahead(struct file
1393 /* for files over a certains size it doesn't pay to do readahead on open */
1394 #define READAHEAD_CUTOFF 48000
1396 -struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
1397 +struct file *dentry_open_it(struct dentry *dentry, struct vfsmount *mnt,
1398 + int flags, struct lookup_intent *it)
1401 struct inode *inode;
1402 @@ -649,7 +715,7 @@ struct file *dentry_open(struct dentry *
1403 error = locks_verify_locked(inode);
1406 - error = do_truncate(dentry, 0);
1407 + error = do_truncate(dentry, 0, 1);
1409 if (error || !(f->f_mode & FMODE_WRITE))
1410 put_write_access(inode);
1411 @@ -679,7 +745,9 @@ struct file *dentry_open(struct dentry *
1414 if (f->f_op && f->f_op->open) {
1416 error = f->f_op->open(inode,f);
1421 @@ -693,6 +761,7 @@ struct file *dentry_open(struct dentry *
1422 do_readahead(f, 0, (48 * 1024) >> PAGE_SHIFT);
1425 + intent_release(it);
1429 @@ -707,11 +776,17 @@ cleanup_all:
1433 + intent_release(it);
1436 return ERR_PTR(error);
1439 +struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
1441 + return dentry_open_it(dentry, mnt, flags, NULL);
1445 * Find an empty file descriptor entry, and mark it busy.
1447 Index: linux-2.4.18-p4smp/fs/stat.c
1448 ===================================================================
1449 --- linux-2.4.18-p4smp.orig/fs/stat.c 2004-02-03 01:00:10.000000000 -0500
1450 +++ linux-2.4.18-p4smp/fs/stat.c 2004-03-19 16:06:19.000000000 -0500
1452 * Revalidate the inode. This is required for proper NFS attribute caching.
1454 static __inline__ int
1455 -do_revalidate(struct dentry *dentry)
1456 +do_revalidate(struct dentry *dentry, struct lookup_intent *it)
1458 struct inode * inode = dentry->d_inode;
1459 - if (inode->i_op && inode->i_op->revalidate)
1460 + if (inode->i_op && inode->i_op->revalidate_it)
1461 + return inode->i_op->revalidate_it(dentry, it);
1462 + else if (inode->i_op && inode->i_op->revalidate)
1463 return inode->i_op->revalidate(dentry);
1467 -static int do_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
1468 +static int do_getattr(struct vfsmount *mnt, struct dentry *dentry,
1469 + struct kstat *stat, struct lookup_intent *it)
1472 unsigned int blocks, indirect;
1473 struct inode *inode = dentry->d_inode;
1475 - res = do_revalidate(dentry);
1476 + res = do_revalidate(dentry, it);
1480 @@ -104,10 +109,12 @@ int vfs_stat(char *name, struct kstat *s
1482 struct nameidata nd;
1484 + struct lookup_intent it = { .it_op = IT_GETATTR };
1486 - error = user_path_walk(name, &nd);
1487 + error = user_path_walk_it(name, &nd, &it);
1489 - error = do_getattr(nd.mnt, nd.dentry, stat);
1490 + error = do_getattr(nd.mnt, nd.dentry, stat, &it);
1491 + intent_release(&it);
1495 @@ -117,10 +124,12 @@ int vfs_lstat(char *name, struct kstat *
1497 struct nameidata nd;
1499 + struct lookup_intent it = { .it_op = IT_GETATTR };
1501 - error = user_path_walk_link(name, &nd);
1502 + error = user_path_walk_link_it(name, &nd, &it);
1504 - error = do_getattr(nd.mnt, nd.dentry, stat);
1505 + error = do_getattr(nd.mnt, nd.dentry, stat, &it);
1506 + intent_release(&it);
1510 @@ -132,7 +141,7 @@ int vfs_fstat(unsigned int fd, struct ks
1514 - error = do_getattr(f->f_vfsmnt, f->f_dentry, stat);
1515 + error = do_getattr(f->f_vfsmnt, f->f_dentry, stat, NULL);
1519 @@ -279,7 +288,7 @@ asmlinkage long sys_readlink(const char
1522 if (inode->i_op && inode->i_op->readlink &&
1523 - !(error = do_revalidate(nd.dentry))) {
1524 + !(error = do_revalidate(nd.dentry, NULL))) {
1525 UPDATE_ATIME(inode);
1526 error = inode->i_op->readlink(nd.dentry, buf, bufsiz);
1528 Index: linux-2.4.18-p4smp/include/linux/dcache.h
1529 ===================================================================
1530 --- linux-2.4.18-p4smp.orig/include/linux/dcache.h 2004-02-03 01:00:10.000000000 -0500
1531 +++ linux-2.4.18-p4smp/include/linux/dcache.h 2004-03-19 16:05:42.000000000 -0500
1534 #include <asm/atomic.h>
1535 #include <linux/mount.h>
1536 +#include <linux/string.h>
1538 +#define IT_OPEN 0x0001
1539 +#define IT_CREAT 0x0002
1540 +#define IT_READDIR 0x0004
1541 +#define IT_GETATTR 0x0008
1542 +#define IT_LOOKUP 0x0010
1543 +#define IT_UNLINK 0x0020
1544 +#define IT_GETXATTR 0x0040
1545 +#define IT_EXEC 0x0080
1546 +#define IT_PIN 0x0100
1548 +#define IT_FL_LOCKED 0x0001
1549 +#define IT_FL_FOLLOWED 0x0002 /* set by vfs_follow_link */
1551 +#define INTENT_MAGIC 0x19620323
1554 +struct lustre_intent_data {
1555 + int it_disposition;
1557 + __u64 it_lock_handle;
1562 +struct lookup_intent {
1564 + void (*it_op_release)(struct lookup_intent *);
1567 + int it_create_mode;
1569 + struct lustre_intent_data lustre;
1573 +static inline void intent_init(struct lookup_intent *it, int op, int flags)
1575 + memset(it, 0, sizeof(*it));
1576 + it->it_magic = INTENT_MAGIC;
1578 + it->it_flags = flags;
1583 * linux/include/linux/dcache.h
1584 @@ -91,8 +136,22 @@ struct dentry_operations {
1585 int (*d_delete)(struct dentry *);
1586 void (*d_release)(struct dentry *);
1587 void (*d_iput)(struct dentry *, struct inode *);
1588 + int (*d_revalidate_it)(struct dentry *, int, struct lookup_intent *);
1589 + void (*d_pin)(struct dentry *, struct vfsmount * , int);
1590 + void (*d_unpin)(struct dentry *, struct vfsmount *, int);
1593 +#define PIN(de,mnt,flag) if (de->d_op && de->d_op->d_pin) \
1594 + de->d_op->d_pin(de, mnt, flag);
1595 +#define UNPIN(de,mnt,flag) if (de->d_op && de->d_op->d_unpin) \
1596 + de->d_op->d_unpin(de, mnt, flag);
1599 +/* defined in fs/namei.c */
1600 +extern void intent_release(struct lookup_intent *it);
1601 +/* defined in fs/dcache.c */
1602 +extern void __d_rehash(struct dentry * entry, int lock);
1604 /* the dentry parameter passed to d_hash and d_compare is the parent
1605 * directory of the entries to be compared. It is used in case these
1606 * functions need any directory specific information for determining
1607 @@ -124,6 +183,7 @@ d_iput: no no yes
1608 * s_nfsd_free_path semaphore will be down
1610 #define DCACHE_REFERENCED 0x0008 /* Recently used, don't discard. */
1611 +#define DCACHE_LUSTRE_INVALID 0x0010 /* Lustre invalidated */
1613 extern spinlock_t dcache_lock;
1615 Index: linux-2.4.18-p4smp/include/linux/fs.h
1616 ===================================================================
1617 --- linux-2.4.18-p4smp.orig/include/linux/fs.h 2004-03-19 16:05:40.000000000 -0500
1618 +++ linux-2.4.18-p4smp/include/linux/fs.h 2004-03-19 16:05:42.000000000 -0500
1621 #define FMODE_READ 1
1622 #define FMODE_WRITE 2
1623 +#define FMODE_EXEC 4
1627 @@ -339,6 +340,9 @@ extern void set_bh_page(struct buffer_he
1628 #define ATTR_MTIME_SET 256
1629 #define ATTR_FORCE 512 /* Not a change, but a change it */
1630 #define ATTR_ATTR_FLAG 1024
1631 +#define ATTR_RAW 0x0800 /* file system, not vfs will massage attrs */
1632 +#define ATTR_FROM_OPEN 0x1000 /* called from open path, ie O_TRUNC */
1633 +#define ATTR_CTIME_SET 0x2000 /* called from open path, ie O_TRUNC */
1636 * This is the Inode Attributes structure, used for notify_change(). It
1637 @@ -474,6 +478,7 @@ struct inode {
1638 struct pipe_inode_info *i_pipe;
1639 struct block_device *i_bdev;
1640 struct char_device *i_cdev;
1641 + void *i_filterdata;
1643 unsigned long i_dnotify_mask; /* Directory notify events */
1644 struct dnotify_struct *i_dnotify; /* for directory notifications */
1645 @@ -578,6 +583,7 @@ struct file {
1647 /* needed for tty driver, and maybe others */
1649 + struct lookup_intent *f_it;
1651 /* preallocated helper kiobuf to speedup O_DIRECT */
1652 struct kiobuf *f_iobuf;
1653 @@ -707,6 +713,7 @@ struct nameidata {
1657 + struct lookup_intent *intent;
1660 #define DQUOT_USR_ENABLED 0x01 /* User diskquotas enabled */
1661 @@ -840,7 +847,8 @@ extern int vfs_symlink(struct inode *, s
1662 extern int vfs_link(struct dentry *, struct inode *, struct dentry *);
1663 extern int vfs_rmdir(struct inode *, struct dentry *);
1664 extern int vfs_unlink(struct inode *, struct dentry *);
1665 -extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
1666 +int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1667 + struct inode *new_dir, struct dentry *new_dentry);
1671 @@ -900,21 +908,34 @@ struct file_operations {
1673 struct inode_operations {
1674 int (*create) (struct inode *,struct dentry *,int);
1675 + int (*create_it) (struct inode *,struct dentry *,int, struct lookup_intent *);
1676 struct dentry * (*lookup) (struct inode *,struct dentry *);
1677 + struct dentry * (*lookup_it) (struct inode *,struct dentry *, struct lookup_intent *, int flags);
1678 int (*link) (struct dentry *,struct inode *,struct dentry *);
1679 + int (*link_raw) (struct nameidata *,struct nameidata *);
1680 int (*unlink) (struct inode *,struct dentry *);
1681 + int (*unlink_raw) (struct nameidata *);
1682 int (*symlink) (struct inode *,struct dentry *,const char *);
1683 + int (*symlink_raw) (struct nameidata *,const char *);
1684 int (*mkdir) (struct inode *,struct dentry *,int);
1685 + int (*mkdir_raw) (struct nameidata *,int);
1686 int (*rmdir) (struct inode *,struct dentry *);
1687 + int (*rmdir_raw) (struct nameidata *);
1688 int (*mknod) (struct inode *,struct dentry *,int,int);
1689 + int (*mknod_raw) (struct nameidata *,int,dev_t);
1690 int (*rename) (struct inode *, struct dentry *,
1691 struct inode *, struct dentry *);
1692 + int (*rename_raw) (struct nameidata *, struct nameidata *);
1693 int (*readlink) (struct dentry *, char *,int);
1694 int (*follow_link) (struct dentry *, struct nameidata *);
1695 + int (*follow_link2) (struct dentry *, struct nameidata *,
1696 + struct lookup_intent *it);
1697 void (*truncate) (struct inode *);
1698 int (*permission) (struct inode *, int);
1699 int (*revalidate) (struct dentry *);
1700 + int (*revalidate_it) (struct dentry *, struct lookup_intent *);
1701 int (*setattr) (struct dentry *, struct iattr *);
1702 + int (*setattr_raw) (struct inode *, struct iattr *);
1703 int (*getattr) (struct dentry *, struct iattr *);
1706 @@ -1119,10 +1140,12 @@ static inline int get_lease(struct inode
1708 asmlinkage long sys_open(const char *, int, int);
1709 asmlinkage long sys_close(unsigned int); /* yes, it's really unsigned */
1710 -extern int do_truncate(struct dentry *, loff_t start);
1711 +extern int do_truncate(struct dentry *, loff_t start, int called_from_open);
1713 extern struct file *filp_open(const char *, int, int);
1714 extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
1715 +extern struct file *dentry_open_it(struct dentry *dentry, struct vfsmount *mnt,
1716 + int flags, struct lookup_intent *it);
1717 extern int filp_close(struct file *, fl_owner_t id);
1718 extern char * getname(const char *);
1720 @@ -1388,9 +1411,12 @@ typedef int (*read_actor_t)(read_descrip
1721 extern loff_t default_llseek(struct file *file, loff_t offset, int origin);
1723 extern int FASTCALL(__user_walk(const char *, unsigned, struct nameidata *));
1724 +extern int FASTCALL(__user_walk_it(const char *, unsigned, struct nameidata *, struct lookup_intent *it));
1725 extern int FASTCALL(path_init(const char *, unsigned, struct nameidata *));
1726 extern int FASTCALL(path_walk(const char *, struct nameidata *));
1727 extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
1728 +extern int FASTCALL(path_lookup_it(const char *path, unsigned flags, struct nameidata *nd,
1729 + struct lookup_intent *it));
1730 extern int FASTCALL(link_path_walk(const char *, struct nameidata *));
1731 extern void path_release(struct nameidata *);
1732 extern int follow_down(struct vfsmount **, struct dentry **);
1733 @@ -1399,6 +1425,8 @@ extern struct dentry * lookup_one_len(co
1734 extern struct dentry * lookup_hash(struct qstr *, struct dentry *);
1735 #define user_path_walk(name,nd) __user_walk(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, nd)
1736 #define user_path_walk_link(name,nd) __user_walk(name, LOOKUP_POSITIVE, nd)
1737 +#define user_path_walk_it(name,nd,it) __user_walk_it(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, nd, it)
1738 +#define user_path_walk_link_it(name,nd,it) __user_walk_it(name, LOOKUP_POSITIVE, nd, it)
1740 extern void inode_init_once(struct inode *);
1741 extern void iput(struct inode *);
1742 @@ -1499,6 +1527,8 @@ extern struct file_operations generic_ro
1744 extern int vfs_readlink(struct dentry *, char *, int, const char *);
1745 extern int vfs_follow_link(struct nameidata *, const char *);
1746 +extern int vfs_follow_link_it(struct nameidata *, const char *,
1747 + struct lookup_intent *it);
1748 extern int page_readlink(struct dentry *, char *, int);
1749 extern int page_follow_link(struct dentry *, struct nameidata *);
1750 extern struct inode_operations page_symlink_inode_operations;
1751 Index: linux-2.4.18-p4smp/kernel/fork.c
1752 ===================================================================
1753 --- linux-2.4.18-p4smp.orig/kernel/fork.c 2004-02-03 01:00:10.000000000 -0500
1754 +++ linux-2.4.18-p4smp/kernel/fork.c 2004-03-19 16:05:42.000000000 -0500
1755 @@ -399,10 +399,13 @@
1756 fs->umask = old->umask;
1757 read_lock(&old->lock);
1758 fs->rootmnt = mntget(old->rootmnt);
1759 + PIN(old->pwd, old->pwdmnt, 0);
1760 + PIN(old->root, old->rootmnt, 1);
1761 fs->root = dget(old->root);
1762 fs->pwdmnt = mntget(old->pwdmnt);
1763 fs->pwd = dget(old->pwd);
1765 + PIN(old->altroot, old->altrootmnt, 1);
1766 fs->altrootmnt = mntget(old->altrootmnt);
1767 fs->altroot = dget(old->altroot);
1769 Index: linux-2.4.18-p4smp/kernel/exit.c
1770 ===================================================================
1771 --- linux-2.4.18-p4smp.orig/kernel/exit.c 2004-02-03 01:00:10.000000000 -0500
1772 +++ linux-2.4.18-p4smp/kernel/exit.c 2004-03-19 16:05:42.000000000 -0500
1773 @@ -303,11 +303,14 @@
1775 /* No need to hold fs->lock if we are killing it */
1776 if (atomic_dec_and_test(&fs->count)) {
1777 + UNPIN(fs->pwd, fs->pwdmnt, 0);
1778 + UNPIN(fs->root, fs->rootmnt, 1);
1780 mntput(fs->rootmnt);
1784 + UNPIN(fs->altroot, fs->altrootmnt, 1);
1786 mntput(fs->altrootmnt);
1788 Index: linux-2.4.18-p4smp/kernel/ksyms.c
1789 ===================================================================
1790 --- linux-2.4.18-p4smp.orig/kernel/ksyms.c 2004-03-19 16:05:40.000000000 -0500
1791 +++ linux-2.4.18-p4smp/kernel/ksyms.c 2004-03-19 16:05:42.000000000 -0500
1793 EXPORT_SYMBOL(set_page_dirty);
1794 EXPORT_SYMBOL(vfs_readlink);
1795 EXPORT_SYMBOL(vfs_follow_link);
1796 +EXPORT_SYMBOL(vfs_follow_link_it);
1797 EXPORT_SYMBOL(page_readlink);
1798 EXPORT_SYMBOL(page_follow_link);
1799 EXPORT_SYMBOL(page_symlink_inode_operations);