+++ /dev/null
---- linux-2.4.18-17.8.0-uml-pristine/include/linux/lustre_version.h Wed Dec 31 19:00:00 1969
-+++ linux-2.4.18-17.8.0-uml/include/linux/lustre_version.h Tue Nov 26 07:02:14 2002
-@@ -0,0 +1 @@
-+#define LUSTRE_KERNEL_VERSION 3
---- kernel-2.4.18-pristine/arch/ia64/mm/init.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/arch/ia64/mm/init.c 2002-10-14 14:08:23.000000000 -0600
-@@ -37,6 +37,12 @@
-
- static unsigned long totalram_pages;
-
-+struct page *check_get_page(unsigned long kaddr)
-+{
-+#warning FIXME: Lustre team, is this solid?
-+ return virt_to_page(kaddr);
-+}
-+
- int
- do_check_pgt_cache (int low, int high)
- {
---- kernel-2.4.18-pristine/arch/i386/mm/init.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/arch/i386/mm/init.c 2002-10-14 14:08:23.000000000 -0600
-@@ -43,6 +43,12 @@
- static unsigned long totalram_pages;
- static unsigned long totalhigh_pages;
-
-+struct page *check_get_page(unsigned long kaddr)
-+{
-+#warning FIXME: Lustre team, is this solid?
-+ return virt_to_page(kaddr);
-+}
-+
- int do_check_pgt_cache(int low, int high)
- {
- int freed = 0;
---- kernel-2.4.18-pristine/drivers/block/blkpg.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/drivers/block/blkpg.c 2002-10-14 14:08:23.000000000 -0600
-@@ -295,3 +295,38 @@
- }
-
- EXPORT_SYMBOL(blk_ioctl);
-+
-+#define NUM_DEV_NO_WRITE 16
-+static int dev_no_write[NUM_DEV_NO_WRITE];
-+
-+/*
-+ * Debug code for turning block devices "read-only" (will discard writes
-+ * silently). This is for filesystem crash/recovery testing.
-+ */
-+void dev_set_rdonly(kdev_t dev, int no_write)
-+{
-+ if (dev) {
-+ printk(KERN_WARNING "Turning device %s read-only\n",
-+ bdevname(dev));
-+ dev_no_write[no_write] = 0xdead0000 + dev;
-+ }
-+}
-+
-+int dev_check_rdonly(kdev_t dev) {
-+ int i;
-+
-+ for (i = 0; i < NUM_DEV_NO_WRITE; i++) {
-+ if ((dev_no_write[i] & 0xffff0000) == 0xdead0000 &&
-+ dev == (dev_no_write[i] & 0xffff))
-+ return 1;
-+ }
-+ return 0;
-+}
-+
-+void dev_clear_rdonly(int no_write) {
-+ dev_no_write[no_write] = 0;
-+}
-+
-+EXPORT_SYMBOL(dev_set_rdonly);
-+EXPORT_SYMBOL(dev_check_rdonly);
-+EXPORT_SYMBOL(dev_clear_rdonly);
---- kernel-2.4.18-pristine/drivers/block/loop.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/drivers/block/loop.c 2002-10-14 14:08:23.000000000 -0600
-@@ -503,6 +503,11 @@
- spin_unlock_irq(&lo->lo_lock);
-
- if (rw == WRITE) {
-+#ifdef CONFIG_DEV_RDONLY
-+ if (dev_check_rdonly(rbh->b_rdev))
-+ goto err;
-+#endif
-+
- if (lo->lo_flags & LO_FLAGS_READ_ONLY)
- goto err;
- } else if (rw == READA) {
---- kernel-2.4.18-pristine/drivers/ide/ide-disk.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/drivers/ide/ide-disk.c 2002-10-14 14:08:23.000000000 -0600
-@@ -557,6 +557,12 @@
- */
- static ide_startstop_t do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
- {
-+#ifdef CONFIG_DEV_RDONLY
-+ if (rq->cmd == WRITE && dev_check_rdonly(rq->rq_dev)) {
-+ ide_end_request(1, HWGROUP(drive));
-+ return ide_stopped;
-+ }
-+#endif
- if (IDE_CONTROL_REG)
- OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
-
---- kernel-2.4.18-pristine/fs/ext3/Makefile 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/fs/ext3/Makefile 2002-10-14 14:08:23.000000000 -0600
-@@ -9,6 +9,8 @@
-
- O_TARGET := ext3.o
-
-+export-objs := super.o
-+
- obj-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
- ioctl.o namei.o super.o symlink.o
- obj-m := $(O_TARGET)
---- kernel-2.4.18-pristine/fs/ext3/super.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/fs/ext3/super.c 2002-10-14 14:08:23.000000000 -0600
-@@ -1746,7 +1746,7 @@
- unregister_filesystem(&ext3_fs_type);
- }
-
--EXPORT_NO_SYMBOLS;
-+EXPORT_SYMBOL(ext3_bread);
-
- MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
- MODULE_DESCRIPTION("Second Extended Filesystem with journaling extensions");
---- kernel-2.4.18-pristine/include/linux/slab.h 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/include/linux/slab.h 2002-10-14 14:08:23.000000000 -0600
-@@ -57,6 +57,7 @@
- extern int kmem_cache_shrink(kmem_cache_t *);
- extern void *kmem_cache_alloc(kmem_cache_t *, int);
- extern void kmem_cache_free(kmem_cache_t *, void *);
-+extern int kmem_cache_validate(kmem_cache_t *cachep, void *objp);
-
- extern void *kmalloc(size_t, int);
- extern void kfree(const void *);
---- kernel-2.4.18-pristine/kernel/ksyms.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/kernel/ksyms.c 2002-10-14 14:08:23.000000000 -0600
-@@ -306,6 +306,12 @@
- EXPORT_SYMBOL(lock_may_write);
- EXPORT_SYMBOL(dcache_readdir);
-
-+/* lustre */
-+EXPORT_SYMBOL(panic_notifier_list);
-+EXPORT_SYMBOL(pagecache_lock_cacheline);
-+EXPORT_SYMBOL(do_kern_mount);
-+EXPORT_SYMBOL(kmem_cache_validate);
-+
- /* for stackable file systems (lofs, wrapfs, cryptfs, etc.) */
- EXPORT_SYMBOL(default_llseek);
- EXPORT_SYMBOL(dentry_open);
---- kernel-2.4.18-pristine/include/linux/dcache.h 2002-10-14 13:51:28.000000000 -0600
-+++ kernel-2.4.18/include/linux/dcache.h 2002-10-14 14:08:23.000000000 -0600
-@@ -6,6 +6,34 @@
- #include <asm/atomic.h>
- #include <linux/mount.h>
-
-+#define IT_OPEN (1)
-+#define IT_CREAT (1<<1)
-+#define IT_MKDIR (1<<2)
-+#define IT_LINK (1<<3)
-+#define IT_LINK2 (1<<4)
-+#define IT_SYMLINK (1<<5)
-+#define IT_UNLINK (1<<6)
-+#define IT_RMDIR (1<<7)
-+#define IT_RENAME (1<<8)
-+#define IT_RENAME2 (1<<9)
-+#define IT_READDIR (1<<10)
-+#define IT_GETATTR (1<<11)
-+#define IT_SETATTR (1<<12)
-+#define IT_READLINK (1<<13)
-+#define IT_MKNOD (1<<14)
-+#define IT_LOOKUP (1<<15)
-+
-+struct lookup_intent {
-+ int it_op;
-+ int it_mode;
-+ int it_disposition;
-+ int it_status;
-+ struct iattr *it_iattr;
-+ __u64 it_lock_handle[2];
-+ int it_lock_mode;
-+ void *it_data;
-+};
-+
- /*
- * linux/include/linux/dcache.h
- *
-@@ -79,6 +107,7 @@
- unsigned long d_time; /* used by d_revalidate */
- struct dentry_operations *d_op;
- struct super_block * d_sb; /* The root of the dentry tree */
-+ struct lookup_intent *d_it;
- unsigned long d_vfs_flags;
- void * d_fsdata; /* fs-specific data */
- void * d_extra_attributes; /* TUX-specific data */
-@@ -92,6 +121,8 @@
- int (*d_delete)(struct dentry *);
- void (*d_release)(struct dentry *);
- void (*d_iput)(struct dentry *, struct inode *);
-+ int (*d_revalidate2)(struct dentry *, int, struct lookup_intent *);
-+ void (*d_intent_release)(struct dentry *, struct lookup_intent *);
- };
-
- /* the dentry parameter passed to d_hash and d_compare is the parent
---- kernel-2.4.18-pristine/include/linux/fs.h 2002-10-14 13:47:27.000000000 -0600
-+++ kernel-2.4.18/include/linux/fs.h 2002-10-14 14:08:23.000000000 -0600
-@@ -572,6 +572,7 @@
-
- /* needed for tty driver, and maybe others */
- void *private_data;
-+ struct lookup_intent *f_intent;
-
- /* preallocated helper kiobuf to speedup O_DIRECT */
- struct kiobuf *f_iobuf;
-@@ -829,7 +830,9 @@
- extern int vfs_link(struct dentry *, struct inode *, struct dentry *);
- extern int vfs_rmdir(struct inode *, struct dentry *);
- extern int vfs_unlink(struct inode *, struct dentry *);
--extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
-+int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
-+ struct inode *new_dir, struct dentry *new_dentry,
-+ struct lookup_intent *it);
-
- /*
- * File types
-@@ -890,6 +893,7 @@
- struct inode_operations {
- int (*create) (struct inode *,struct dentry *,int);
- struct dentry * (*lookup) (struct inode *,struct dentry *);
-+ struct dentry * (*lookup2) (struct inode *,struct dentry *, struct lookup_intent *);
- int (*link) (struct dentry *,struct inode *,struct dentry *);
- int (*unlink) (struct inode *,struct dentry *);
- int (*symlink) (struct inode *,struct dentry *,const char *);
-@@ -1036,6 +1040,7 @@
- extern struct vfsmount *kern_mount(struct file_system_type *);
- extern int may_umount(struct vfsmount *);
- extern long do_mount(char *, char *, char *, unsigned long, void *);
-+struct vfsmount *do_kern_mount(const char *type, int flags, char *name, void *data);
- extern void umount_tree(struct vfsmount *);
-
- #define kern_umount mntput
-@@ -1370,6 +1375,7 @@
- extern loff_t default_llseek(struct file *file, loff_t offset, int origin);
-
- extern int FASTCALL(__user_walk(const char *, unsigned, struct nameidata *));
-+extern int FASTCALL(__user_walk_it(const char *, unsigned, struct nameidata *, struct lookup_intent *it));
- extern int FASTCALL(path_init(const char *, unsigned, struct nameidata *));
- extern int FASTCALL(path_walk(const char *, struct nameidata *));
- extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
-@@ -1381,6 +1387,8 @@
- extern struct dentry * lookup_hash(struct qstr *, struct dentry *);
- #define user_path_walk(name,nd) __user_walk(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, nd)
- #define user_path_walk_link(name,nd) __user_walk(name, LOOKUP_POSITIVE, nd)
-+#define user_path_walk_it(name,nd,it) __user_walk_it(name, LOOKUP_FOLLOW|LOOKUP_POSITIVE, nd, it)
-+#define user_path_walk_link_it(name,nd,it) __user_walk_it(name, LOOKUP_POSITIVE, nd, it)
-
- extern void iput(struct inode *);
- extern void force_delete(struct inode *);
---- kernel-2.4.18-pristine/fs/dcache.c 2002-10-14 13:47:27.000000000 -0600
-+++ kernel-2.4.18/fs/dcache.c 2002-10-14 14:08:23.000000000 -0600
-@@ -645,6 +645,7 @@
- dentry->d_fsdata = NULL;
- dentry->d_extra_attributes = NULL;
- dentry->d_mounted = 0;
-+ dentry->d_it = NULL;
- INIT_LIST_HEAD(&dentry->d_hash);
- INIT_LIST_HEAD(&dentry->d_lru);
- INIT_LIST_HEAD(&dentry->d_subdirs);
---- kernel-2.4.18-pristine/fs/nfsd/vfs.c 2002-10-14 13:47:27.000000000 -0600
-+++ kernel-2.4.18/fs/nfsd/vfs.c 2002-10-14 14:08:23.000000000 -0600
-@@ -1298,7 +1298,7 @@
- err = nfserr_perm;
- } else
- #endif
-- err = vfs_rename(fdir, odentry, tdir, ndentry);
-+ err = vfs_rename(fdir, odentry, tdir, ndentry, NULL);
- unlock_kernel();
- if (!err && EX_ISSYNC(tfhp->fh_export)) {
- nfsd_sync_dir(tdentry);
---- kernel-2.4.18-pristine/fs/namei.c 2002-10-14 13:56:44.000000000 -0600
-+++ kernel-2.4.18/fs/namei.c 2002-10-14 14:08:23.000000000 -0600
-@@ -94,6 +94,14 @@
- * XEmacs seems to be relying on it...
- */
-
-+void intent_release(struct dentry *de, struct lookup_intent *it)
-+{
-+ if (de->d_op && de->d_op->d_intent_release)
-+ de->d_op->d_intent_release(de, it);
-+
-+}
-+
-+
- /* In order to reduce some races, while at the same time doing additional
- * checking and hopefully speeding things up, we copy filenames to the
- * kernel data space before using them..
-@@ -260,10 +268,19 @@
- * Internal lookup() using the new generic dcache.
- * SMP-safe
- */
--static struct dentry * cached_lookup(struct dentry * parent, struct qstr * name, int flags)
-+static struct dentry *cached_lookup(struct dentry *parent, struct qstr *name,
-+ int flags, struct lookup_intent *it)
- {
- struct dentry * dentry = d_lookup(parent, name);
-
-+ if (dentry && dentry->d_op && dentry->d_op->d_revalidate2) {
-+ if (!dentry->d_op->d_revalidate2(dentry, flags, it) &&
-+ !d_invalidate(dentry)) {
-+ dput(dentry);
-+ dentry = NULL;
-+ }
-+ return dentry;
-+ } else
- if (dentry && dentry->d_op && dentry->d_op->d_revalidate) {
- if (!dentry->d_op->d_revalidate(dentry, flags) && !d_invalidate(dentry)) {
- dput(dentry);
-@@ -281,7 +298,8 @@
- * make sure that nobody added the entry to the dcache in the meantime..
- * SMP-safe
- */
--static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, int flags)
-+static struct dentry *real_lookup(struct dentry *parent, struct qstr *name,
-+ int flags, struct lookup_intent *it)
- {
- struct dentry * result;
- struct inode *dir = parent->d_inode;
-@@ -300,6 +318,9 @@
- result = ERR_PTR(-ENOMEM);
- if (dentry) {
- lock_kernel();
-+ if (dir->i_op->lookup2)
-+ result = dir->i_op->lookup2(dir, dentry, it);
-+ else
- result = dir->i_op->lookup(dir, dentry);
- unlock_kernel();
- if (result)
-@@ -321,6 +342,12 @@
- dput(result);
- result = ERR_PTR(-ENOENT);
- }
-+ } else if (result->d_op && result->d_op->d_revalidate2) {
-+ if (!result->d_op->d_revalidate2(result, flags, it) &&
-+ !d_invalidate(result)) {
-+ dput(result);
-+ result = ERR_PTR(-ENOENT);
-+ }
- }
- return result;
- }
-@@ -447,7 +474,8 @@
- *
- * We expect 'base' to be positive and a directory.
- */
--int link_path_walk(const char * name, struct nameidata *nd)
-+int link_path_walk_it(const char *name, struct nameidata *nd,
-+ struct lookup_intent *it)
- {
- struct dentry *dentry;
- struct inode *inode;
-@@ -524,12 +552,12 @@
- break;
- }
- /* This does the actual lookups.. */
-- dentry = cached_lookup(nd->dentry, &this, LOOKUP_CONTINUE);
-+ dentry = cached_lookup(nd->dentry, &this, LOOKUP_CONTINUE, NULL);
- if (!dentry) {
- err = -EWOULDBLOCKIO;
- if (atomic)
- break;
-- dentry = real_lookup(nd->dentry, &this, LOOKUP_CONTINUE);
-+ dentry = real_lookup(nd->dentry, &this, LOOKUP_CONTINUE, NULL);
- err = PTR_ERR(dentry);
- if (IS_ERR(dentry))
- break;
-@@ -563,7 +591,7 @@
- nd->dentry = dentry;
- }
- err = -ENOTDIR;
-- if (!inode->i_op->lookup)
-+ if (!inode->i_op->lookup && !inode->i_op->lookup2)
- break;
- continue;
- /* here ends the main loop */
-@@ -590,12 +618,12 @@
- if (err < 0)
- break;
- }
-- dentry = cached_lookup(nd->dentry, &this, 0);
-+ dentry = cached_lookup(nd->dentry, &this, 0, it);
- if (!dentry) {
- err = -EWOULDBLOCKIO;
- if (atomic)
- break;
-- dentry = real_lookup(nd->dentry, &this, 0);
-+ dentry = real_lookup(nd->dentry, &this, 0, it);
- err = PTR_ERR(dentry);
- if (IS_ERR(dentry))
- break;
-@@ -619,7 +647,8 @@
- goto no_inode;
- if (lookup_flags & LOOKUP_DIRECTORY) {
- err = -ENOTDIR;
-- if (!inode->i_op || !inode->i_op->lookup)
-+ if (!inode->i_op || (!inode->i_op->lookup &&
-+ !inode->i_op->lookup2))
- break;
- }
- goto return_base;
-@@ -661,10 +690,21 @@
- return err;
- }
-
-+int link_path_walk(const char * name, struct nameidata *nd)
-+{
-+ return link_path_walk_it(name, nd, NULL);
-+}
-+
-+int path_walk_it(const char * name, struct nameidata *nd, struct lookup_intent *it)
-+{
-+ current->total_link_count = 0;
-+ return link_path_walk_it(name, nd, it);
-+}
-+
- int path_walk(const char * name, struct nameidata *nd)
- {
- current->total_link_count = 0;
-- return link_path_walk(name, nd);
-+ return link_path_walk_it(name, nd, NULL);
- }
-
- /* SMP-safe */
-@@ -749,6 +789,17 @@
- }
-
- /* SMP-safe */
-+int path_lookup_it(const char *path, unsigned flags, struct nameidata *nd,
-+ struct lookup_intent *it)
-+{
-+ int error = 0;
-+ if (path_init(path, flags, nd))
-+ error = path_walk_it(path, nd, it);
-+ return error;
-+}
-+
-+
-+/* SMP-safe */
- int path_lookup(const char *path, unsigned flags, struct nameidata *nd)
- {
- int error = 0;
-@@ -777,7 +828,8 @@
- * needs parent already locked. Doesn't follow mounts.
- * SMP-safe.
- */
--struct dentry * lookup_hash(struct qstr *name, struct dentry * base)
-+struct dentry * lookup_hash_it(struct qstr *name, struct dentry * base,
-+ struct lookup_intent *it)
- {
- struct dentry * dentry;
- struct inode *inode;
-@@ -800,13 +852,16 @@
- goto out;
- }
-
-- dentry = cached_lookup(base, name, 0);
-+ dentry = cached_lookup(base, name, 0, it);
- if (!dentry) {
- struct dentry *new = d_alloc(base, name);
- dentry = ERR_PTR(-ENOMEM);
- if (!new)
- goto out;
- lock_kernel();
-+ if (inode->i_op->lookup2)
-+ dentry = inode->i_op->lookup2(inode, new, it);
-+ else
- dentry = inode->i_op->lookup(inode, new);
- unlock_kernel();
- if (!dentry)
-@@ -818,6 +873,12 @@
- return dentry;
- }
-
-+struct dentry * lookup_hash(struct qstr *name, struct dentry * base)
-+{
-+ return lookup_hash_it(name, base, NULL);
-+}
-+
-+
- /* SMP-safe */
- struct dentry * lookup_one_len(const char * name, struct dentry * base, int len)
- {
-@@ -839,7 +900,7 @@
- }
- this.hash = end_name_hash(hash);
-
-- return lookup_hash(&this, base);
-+ return lookup_hash_it(&this, base, NULL);
- access:
- return ERR_PTR(-EACCES);
- }
-@@ -870,6 +931,23 @@
- return err;
- }
-
-+int __user_walk_it(const char *name, unsigned flags, struct nameidata *nd,
-+ struct lookup_intent *it)
-+{
-+ char *tmp;
-+ int err;
-+
-+ tmp = getname(name);
-+ err = PTR_ERR(tmp);
-+ if (!IS_ERR(tmp)) {
-+ err = 0;
-+ if (path_init(tmp, flags, nd))
-+ err = path_walk_it(tmp, nd, it);
-+ putname(tmp);
-+ }
-+ return err;
-+}
-+
- /*
- * It's inline, so penalty for filesystems that don't use sticky bit is
- * minimal.
-@@ -1008,7 +1086,8 @@
- * for symlinks (where the permissions are checked later).
- * SMP-safe
- */
--int open_namei(const char * pathname, int flag, int mode, struct nameidata *nd)
-+int open_namei_it(const char *pathname, int flag, int mode,
-+ struct nameidata *nd, struct lookup_intent *it)
- {
- int acc_mode, error = 0;
- struct inode *inode;
-@@ -1022,7 +1101,7 @@
- * The simplest case - just a plain lookup.
- */
- if (!(flag & O_CREAT)) {
-- error = path_lookup(pathname, lookup_flags(flag), nd);
-+ error = path_lookup_it(pathname, lookup_flags(flag), nd, it);
- if (error)
- return error;
- dentry = nd->dentry;
-@@ -1032,6 +1111,10 @@
- /*
- * Create - we need to know the parent.
- */
-+ if (it) {
-+ it->it_mode = mode;
-+ it->it_op |= IT_CREAT;
-+ }
- error = path_lookup(pathname, LOOKUP_PARENT, nd);
- if (error)
- return error;
-@@ -1047,7 +1130,7 @@
-
- dir = nd->dentry;
- down(&dir->d_inode->i_sem);
-- dentry = lookup_hash(&nd->last, nd->dentry);
-+ dentry = lookup_hash_it(&nd->last, nd->dentry, it);
-
- do_last:
- error = PTR_ERR(dentry);
-@@ -1056,6 +1139,7 @@
- goto exit;
- }
-
-+ it->it_mode = mode;
- /* Negative dentry, just create the file */
- if (!dentry->d_inode) {
- error = vfs_create(dir->d_inode, dentry,
-@@ -1175,8 +1259,10 @@
- return 0;
-
- exit_dput:
-+ intent_release(dentry, it);
- dput(dentry);
- exit:
-+ intent_release(nd->dentry, it);
- path_release(nd);
- return error;
-
-@@ -1196,6 +1282,8 @@
- */
- UPDATE_ATIME(dentry->d_inode);
- error = dentry->d_inode->i_op->follow_link(dentry, nd);
-+ if (error)
-+ intent_release(dentry, it);
- dput(dentry);
- if (error)
- return error;
-@@ -1217,13 +1305,20 @@
- }
- dir = nd->dentry;
- down(&dir->d_inode->i_sem);
-- dentry = lookup_hash(&nd->last, nd->dentry);
-+ dentry = lookup_hash_it(&nd->last, nd->dentry, it);
- putname(nd->last.name);
- goto do_last;
- }
-
-+int open_namei(const char *pathname, int flag, int mode, struct nameidata *nd)
-+{
-+ return open_namei_it(pathname, flag, mode, nd, NULL);
-+}
-+
-+
- /* SMP-safe */
--static struct dentry *lookup_create(struct nameidata *nd, int is_dir)
-+static struct dentry *lookup_create(struct nameidata *nd, int is_dir,
-+ struct lookup_intent *it)
- {
- struct dentry *dentry;
-
-@@ -1231,7 +1326,7 @@
- dentry = ERR_PTR(-EEXIST);
- if (nd->last_type != LAST_NORM)
- goto fail;
-- dentry = lookup_hash(&nd->last, nd->dentry);
-+ dentry = lookup_hash_it(&nd->last, nd->dentry, it);
- if (IS_ERR(dentry))
- goto fail;
- if (!is_dir && nd->last.name[nd->last.len] && !dentry->d_inode)
-@@ -1277,6 +1372,7 @@
- char * tmp;
- struct dentry * dentry;
- struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_MKNOD, .it_mode = mode };
-
- if (S_ISDIR(mode))
- return -EPERM;
-@@ -1287,7 +1383,7 @@
- error = path_lookup(tmp, LOOKUP_PARENT, &nd);
- if (error)
- goto out;
-- dentry = lookup_create(&nd, 0);
-+ dentry = lookup_create(&nd, 0, &it);
- error = PTR_ERR(dentry);
-
- mode &= ~current->fs->umask;
-@@ -1305,6 +1401,7 @@
- default:
- error = -EINVAL;
- }
-+ intent_release(dentry, &it);
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-@@ -1345,6 +1442,7 @@
- {
- int error = 0;
- char * tmp;
-+ struct lookup_intent it = { .it_op = IT_MKDIR, .it_mode = mode };
-
- tmp = getname(pathname);
- error = PTR_ERR(tmp);
-@@ -1355,11 +1453,12 @@
- error = path_lookup(tmp, LOOKUP_PARENT, &nd);
- if (error)
- goto out;
-- dentry = lookup_create(&nd, 1);
-+ dentry = lookup_create(&nd, 1, &it);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- error = vfs_mkdir(nd.dentry->d_inode, dentry,
- mode & ~current->fs->umask);
-+ intent_release(dentry, &it);
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-@@ -1439,6 +1538,7 @@
- char * name;
- struct dentry *dentry;
- struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_RMDIR };
-
- name = getname(pathname);
- if(IS_ERR(name))
-@@ -1460,10 +1560,11 @@
- goto exit1;
- }
- down(&nd.dentry->d_inode->i_sem);
-- dentry = lookup_hash(&nd.last, nd.dentry);
-+ dentry = lookup_hash_it(&nd.last, nd.dentry, &it);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- error = vfs_rmdir(nd.dentry->d_inode, dentry);
-+ intent_release(dentry, &it);
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-@@ -1507,6 +1608,7 @@
- char * name;
- struct dentry *dentry;
- struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_UNLINK };
-
- name = getname(pathname);
- if(IS_ERR(name))
-@@ -1519,7 +1621,7 @@
- if (nd.last_type != LAST_NORM)
- goto exit1;
- down(&nd.dentry->d_inode->i_sem);
-- dentry = lookup_hash(&nd.last, nd.dentry);
-+ dentry = lookup_hash_it(&nd.last, nd.dentry, &it);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- /* Why not before? Because we want correct error value */
-@@ -1527,6 +1629,7 @@
- goto slashes;
- error = vfs_unlink(nd.dentry->d_inode, dentry);
- exit2:
-+ intent_release(dentry, &it);
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-@@ -1573,6 +1676,7 @@
- int error = 0;
- char * from;
- char * to;
-+ struct lookup_intent it = { .it_op = IT_SYMLINK };
-
- from = getname(oldname);
- if(IS_ERR(from))
-@@ -1586,10 +1690,12 @@
- error = path_lookup(to, LOOKUP_PARENT, &nd);
- if (error)
- goto out;
-- dentry = lookup_create(&nd, 0);
-+ it.it_data = from;
-+ dentry = lookup_create(&nd, 0, &it);
- error = PTR_ERR(dentry);
- if (!IS_ERR(dentry)) {
- error = vfs_symlink(nd.dentry->d_inode, dentry, from);
-+ intent_release(dentry, &it);
- dput(dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-@@ -1654,6 +1760,7 @@
- {
- int error;
- char * to;
-+ struct lookup_intent it = { .it_op = IT_LINK };
-
- to = getname(newname);
- error = PTR_ERR(to);
-@@ -1661,7 +1768,7 @@
- struct dentry *new_dentry;
- struct nameidata nd, old_nd;
-
-- error = __user_walk(oldname, LOOKUP_POSITIVE, &old_nd);
-+ error = __user_walk_it(oldname, LOOKUP_POSITIVE, &old_nd, &it);
- if (error)
- goto exit;
- error = path_lookup(to, LOOKUP_PARENT, &nd);
-@@ -1670,10 +1778,12 @@
- error = -EXDEV;
- if (old_nd.mnt != nd.mnt)
- goto out_release;
-- new_dentry = lookup_create(&nd, 0);
-+ it.it_op = IT_LINK2;
-+ new_dentry = lookup_create(&nd, 0, &it);
- error = PTR_ERR(new_dentry);
- if (!IS_ERR(new_dentry)) {
- error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
-+ intent_release(new_dentry, &it);
- dput(new_dentry);
- }
- up(&nd.dentry->d_inode->i_sem);
-@@ -1715,7 +1822,8 @@
- * locking].
- */
- int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
-- struct inode *new_dir, struct dentry *new_dentry)
-+ struct inode *new_dir, struct dentry *new_dentry,
-+ struct lookup_intent *it)
- {
- int error;
- struct inode *target;
-@@ -1773,6 +1881,7 @@
- error = -EBUSY;
- else
- error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
-+ intent_release(new_dentry, it);
- if (target) {
- if (!error)
- target->i_flags |= S_DEAD;
-@@ -1794,7 +1903,8 @@
- }
-
- int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
-- struct inode *new_dir, struct dentry *new_dentry)
-+ struct inode *new_dir, struct dentry *new_dentry,
-+ struct lookup_intent *it)
- {
- int error;
-
-@@ -1825,6 +1935,7 @@
- error = -EBUSY;
- else
- error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
-+ intent_release(new_dentry, it);
- double_up(&old_dir->i_zombie, &new_dir->i_zombie);
- if (error)
- return error;
-@@ -1836,13 +1947,14 @@
- }
-
- int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
-- struct inode *new_dir, struct dentry *new_dentry)
-+ struct inode *new_dir, struct dentry *new_dentry,
-+ struct lookup_intent *it)
- {
- int error;
- if (S_ISDIR(old_dentry->d_inode->i_mode))
-- error = vfs_rename_dir(old_dir,old_dentry,new_dir,new_dentry);
-+ error = vfs_rename_dir(old_dir,old_dentry,new_dir,new_dentry,it);
- else
-- error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry);
-+ error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry,it);
- if (!error) {
- if (old_dir == new_dir)
- inode_dir_notify(old_dir, DN_RENAME);
-@@ -1859,6 +1971,7 @@
- int error = 0;
- struct dentry * old_dir, * new_dir;
- struct dentry * old_dentry, *new_dentry;
-+ struct lookup_intent it = { .it_op = IT_RENAME };
- struct nameidata oldnd, newnd;
-
- error = path_lookup(oldname, LOOKUP_PARENT, &oldnd);
-@@ -1884,7 +1997,7 @@
-
- double_lock(new_dir, old_dir);
-
-- old_dentry = lookup_hash(&oldnd.last, old_dir);
-+ old_dentry = lookup_hash_it(&oldnd.last, old_dir, &it);
- error = PTR_ERR(old_dentry);
- if (IS_ERR(old_dentry))
- goto exit3;
-@@ -1900,18 +2013,21 @@
- if (newnd.last.name[newnd.last.len])
- goto exit4;
- }
-- new_dentry = lookup_hash(&newnd.last, new_dir);
-+ it.it_op = IT_RENAME2;
-+ new_dentry = lookup_hash_it(&newnd.last, new_dir, &it);
- error = PTR_ERR(new_dentry);
- if (IS_ERR(new_dentry))
- goto exit4;
-
- lock_kernel();
- error = vfs_rename(old_dir->d_inode, old_dentry,
-- new_dir->d_inode, new_dentry);
-+ new_dir->d_inode, new_dentry, &it);
- unlock_kernel();
-
-+ intent_release(new_dentry, &it);
- dput(new_dentry);
- exit4:
-+ intent_release(old_dentry, &it); // FIXME: release same intent twice!!!
- dput(old_dentry);
- exit3:
- double_up(&new_dir->d_inode->i_sem, &old_dir->d_inode->i_sem);
---- kernel-2.4.18-pristine/fs/open.c 2002-10-14 13:47:27.000000000 -0600
-+++ kernel-2.4.18/fs/open.c 2002-10-14 14:08:23.000000000 -0600
-@@ -19,6 +19,9 @@
- #include <asm/uaccess.h>
-
- #define special_file(m) (S_ISCHR(m)||S_ISBLK(m)||S_ISFIFO(m)||S_ISSOCK(m))
-+extern int path_walk_it(const char *name, struct nameidata *nd,
-+ struct lookup_intent *it);
-+extern void intent_release(struct dentry *de, struct lookup_intent *it);
-
- int vfs_statfs(struct super_block *sb, struct statfs *buf)
- {
-@@ -118,12 +121,13 @@
- struct nameidata nd;
- struct inode * inode;
- int error;
-+ struct lookup_intent it = { .it_op = IT_SETATTR };
-
- 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, &it);
- if (error)
- goto out;
- inode = nd.dentry->d_inode;
-@@ -168,6 +172,7 @@
- put_write_access(inode);
-
- dput_and_out:
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- out:
- return error;
-@@ -259,8 +264,9 @@
- struct nameidata nd;
- struct inode * inode;
- struct iattr newattrs;
-+ struct lookup_intent it = { .it_op = IT_SETATTR };
-
-- error = user_path_walk(filename, &nd);
-+ error = user_path_walk_it(filename, &nd, &it);
- if (error)
- goto out;
- inode = nd.dentry->d_inode;
-@@ -286,6 +292,7 @@
- }
- error = notify_change(nd.dentry, &newattrs);
- dput_and_out:
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- out:
- return error;
-@@ -303,8 +310,9 @@
- struct nameidata nd;
- struct inode * inode;
- struct iattr newattrs;
-+ struct lookup_intent it = { .it_op = IT_SETATTR };
-
-- error = user_path_walk(filename, &nd);
-+ error = user_path_walk_it(filename, &nd, &it);
-
- if (error)
- goto out;
-@@ -330,6 +338,7 @@
- }
- error = notify_change(nd.dentry, &newattrs);
- dput_and_out:
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- out:
- return error;
-@@ -346,6 +355,7 @@
- int old_fsuid, old_fsgid;
- kernel_cap_t old_cap;
- int res;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
-
- if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */
- return -EINVAL;
-@@ -363,13 +373,14 @@
- else
- current->cap_effective = current->cap_permitted;
-
-- res = user_path_walk(filename, &nd);
-+ res = user_path_walk_it(filename, &nd, &it);
- if (!res) {
- res = permission(nd.dentry->d_inode, mode);
- /* SuS v2 requires we report a read only fs too */
- if(!res && (mode & S_IWOTH) && IS_RDONLY(nd.dentry->d_inode)
- && !special_file(nd.dentry->d_inode->i_mode))
- res = -EROFS;
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- }
-
-@@ -384,8 +395,11 @@
- {
- int error;
- struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
-
-- error = __user_walk(filename,LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY,&nd);
-+ error = __user_walk_it(filename,
-+ LOOKUP_POSITIVE|LOOKUP_FOLLOW|LOOKUP_DIRECTORY,
-+ &nd, &it);
- if (error)
- goto out;
-
-@@ -396,6 +410,7 @@
- set_fs_pwd(current->fs, nd.mnt, nd.dentry);
-
- dput_and_out:
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- out:
- return error;
-@@ -435,9 +450,10 @@
- {
- int error;
- struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
-
-- error = __user_walk(filename, LOOKUP_POSITIVE | LOOKUP_FOLLOW |
-- LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
-+ error = __user_walk_it(filename, LOOKUP_POSITIVE | LOOKUP_FOLLOW |
-+ LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd, &it);
- if (error)
- goto out;
-
-@@ -453,6 +469,7 @@
- set_fs_altroot();
- error = 0;
- dput_and_out:
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- out:
- return error;
-@@ -497,8 +514,9 @@
- struct inode * inode;
- int error;
- struct iattr newattrs;
-+ struct lookup_intent it = { .it_op = IT_SETATTR };
-
-- error = user_path_walk(filename, &nd);
-+ error = user_path_walk_it(filename, &nd, &it);
- if (error)
- goto out;
- inode = nd.dentry->d_inode;
-@@ -518,6 +536,7 @@
- error = notify_change(nd.dentry, &newattrs);
-
- dput_and_out:
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- out:
- return error;
-@@ -587,10 +606,12 @@
- {
- struct nameidata nd;
- int error;
-+ struct lookup_intent it = { .it_op = IT_SETATTR };
-
-- error = user_path_walk(filename, &nd);
-+ error = user_path_walk_it(filename, &nd, &it);
- if (!error) {
- error = chown_common(nd.dentry, user, group);
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- }
- return error;
-@@ -600,10 +621,12 @@
- {
- struct nameidata nd;
- int error;
-+ struct lookup_intent it = { .it_op = IT_SETATTR };
-
-- error = user_path_walk_link(filename, &nd);
-+ error = user_path_walk_link_it(filename, &nd, &it);
- if (!error) {
- error = chown_common(nd.dentry, user, group);
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- }
- return error;
-@@ -637,10 +660,16 @@
- * for the internal routines (ie open_namei()/follow_link() etc). 00 is
- * used by symlinks.
- */
-+extern int open_namei_it(const char *filename, int namei_flags, int mode,
-+ struct nameidata *nd, struct lookup_intent *it);
-+struct file *dentry_open_it(struct dentry *dentry, struct vfsmount *mnt,
-+ int flags, struct lookup_intent *it);
-+
- struct file *filp_open(const char * filename, int flags, int mode)
- {
- int namei_flags, error;
- struct nameidata nd;
-+ struct lookup_intent it = { .it_op = IT_OPEN };
-
- namei_flags = flags;
- if ((namei_flags+1) & O_ACCMODE)
-@@ -648,14 +677,15 @@
- if (namei_flags & O_TRUNC)
- namei_flags |= 2;
-
-- error = open_namei(filename, namei_flags, mode, &nd);
-- if (!error)
-- return dentry_open(nd.dentry, nd.mnt, flags);
--
-- return ERR_PTR(error);
-+ error = open_namei_it(filename, namei_flags, mode, &nd, &it);
-+ if (error)
-+ return ERR_PTR(error);
-+
-+ return dentry_open_it(nd.dentry, nd.mnt, flags, &it);
- }
-
--struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
-+struct file *dentry_open_it(struct dentry *dentry, struct vfsmount *mnt,
-+ int flags, struct lookup_intent *it)
- {
- struct file * f;
- struct inode *inode;
-@@ -698,6 +728,7 @@
- }
- f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
-
-+ intent_release(dentry, it);
- return f;
-
- cleanup_all:
-@@ -712,11 +743,17 @@
- cleanup_file:
- put_filp(f);
- cleanup_dentry:
-+ intent_release(dentry, it);
- dput(dentry);
- mntput(mnt);
- return ERR_PTR(error);
- }
-
-+struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
-+{
-+ return dentry_open_it(dentry, mnt, flags, NULL);
-+}
-+
- /*
- * Find an empty file descriptor entry, and mark it busy.
- */
---- kernel-2.4.18-pristine/fs/stat.c 2002-10-14 13:47:27.000000000 -0600
-+++ kernel-2.4.18/fs/stat.c 2002-10-14 14:08:23.000000000 -0600
-@@ -13,6 +13,7 @@
-
- #include <asm/uaccess.h>
-
-+extern void intent_release(struct dentry *de, struct lookup_intent *it);
- /*
- * Revalidate the inode. This is required for proper NFS attribute caching.
- */
-@@ -104,10 +105,12 @@
- {
- struct nameidata nd;
- int error;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
-
-- error = user_path_walk(name, &nd);
-+ error = user_path_walk_it(name, &nd, &it);
- if (!error) {
- error = do_getattr(nd.mnt, nd.dentry, stat);
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- }
- return error;
-@@ -117,10 +120,12 @@
- {
- struct nameidata nd;
- int error;
-+ struct lookup_intent it = { .it_op = IT_GETATTR };
-
-- error = user_path_walk_link(name, &nd);
-+ error = user_path_walk_link_it(name, &nd, &it);
- if (!error) {
- error = do_getattr(nd.mnt, nd.dentry, stat);
-+ intent_release(nd.dentry, &it);
- path_release(&nd);
- }
- return error;
---- kernel-2.4.18-pristine/mm/slab.c 2002-10-14 13:47:27.000000000 -0600
-+++ kernel-2.4.18/mm/slab.c 2002-10-14 14:08:23.000000000 -0600
-@@ -1207,6 +1207,59 @@
- * Called with the cache-lock held.
- */
-
-+extern struct page *check_get_page(unsigned long kaddr);
-+struct page *page_mem_map(struct page *page);
-+static int kmem_check_cache_obj (kmem_cache_t * cachep,
-+ slab_t *slabp, void * objp)
-+{
-+ int i;
-+ unsigned int objnr;
-+
-+#if DEBUG
-+ if (cachep->flags & SLAB_RED_ZONE) {
-+ objp -= BYTES_PER_WORD;
-+ if ( *(unsigned long *)objp != RED_MAGIC2)
-+ /* Either write before start, or a double free. */
-+ return 0;
-+ if (*(unsigned long *)(objp+cachep->objsize -
-+ BYTES_PER_WORD) != RED_MAGIC2)
-+ /* Either write past end, or a double free. */
-+ return 0;
-+ }
-+#endif
-+
-+ objnr = (objp-slabp->s_mem)/cachep->objsize;
-+ if (objnr >= cachep->num)
-+ return 0;
-+ if (objp != slabp->s_mem + objnr*cachep->objsize)
-+ return 0;
-+
-+ /* Check slab's freelist to see if this obj is there. */
-+ for (i = slabp->free; i != BUFCTL_END; i = slab_bufctl(slabp)[i]) {
-+ if (i == objnr)
-+ return 0;
-+ }
-+ return 1;
-+}
-+
-+
-+int kmem_cache_validate(kmem_cache_t *cachep, void *objp)
-+{
-+ struct page *page = check_get_page((unsigned long)objp);
-+
-+ if (!VALID_PAGE(page))
-+ return 0;
-+
-+ if (!PageSlab(page))
-+ return 0;
-+
-+ /* XXX check for freed slab objects ? */
-+ if (!kmem_check_cache_obj(cachep, GET_PAGE_SLAB(page), objp))
-+ return 0;
-+
-+ return (cachep == GET_PAGE_CACHE(page));
-+}
-+
- #if DEBUG
- static int kmem_extra_free_checks (kmem_cache_t * cachep,
- slab_t *slabp, void * objp)
---- kernel-2.4.18-pristine/fs/jbd/commit.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/fs/jbd/commit.c 2002-10-14 14:08:23.000000000 -0600
-@@ -482,7 +482,7 @@
- transaction's t_log_list queue, and metadata buffers are on
- the t_iobuf_list queue.
-
-- Wait for the transactions in reverse order. That way we are
-+ Wait for the buffers in reverse order. That way we are
- less likely to be woken up until all IOs have completed, and
- so we incur less scheduling load.
- */
-@@ -575,8 +575,10 @@
-
- jbd_debug(3, "JBD: commit phase 6\n");
-
-- if (is_journal_aborted(journal))
-+ if (is_journal_aborted(journal)) {
-+ unlock_journal(journal);
- goto skip_commit;
-+ }
-
- /* Done it all: now write the commit record. We should have
- * cleaned up our previous buffers by now, so if we are in abort
-@@ -586,6 +588,7 @@
- descriptor = journal_get_descriptor_buffer(journal);
- if (!descriptor) {
- __journal_abort_hard(journal);
-+ unlock_journal(journal);
- goto skip_commit;
- }
-
-@@ -609,7 +612,6 @@
- put_bh(bh); /* One for getblk() */
- journal_unlock_journal_head(descriptor);
- }
-- lock_journal(journal);
-
- /* End of a transaction! Finally, we can do checkpoint
- processing: any buffers committed as a result of this
-@@ -618,6 +620,25 @@
-
- skip_commit:
-
-+ /* Call any callbacks that had been registered for handles in this
-+ * transaction. It is up to the callback to free any allocated
-+ * memory.
-+ */
-+ if (!list_empty(&commit_transaction->t_jcb)) {
-+ struct list_head *p, *n;
-+ int error = is_journal_aborted(journal);
-+
-+ list_for_each_safe(p, n, &commit_transaction->t_jcb) {
-+ struct journal_callback *jcb;
-+
-+ jcb = list_entry(p, struct journal_callback, jcb_list);
-+ list_del(p);
-+ jcb->jcb_func(jcb, error);
-+ }
-+ }
-+
-+ lock_journal(journal);
-+
- jbd_debug(3, "JBD: commit phase 7\n");
-
- J_ASSERT(commit_transaction->t_sync_datalist == NULL);
---- kernel-2.4.18-pristine/fs/jbd/journal.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/fs/jbd/journal.c 2002-10-14 14:08:23.000000000 -0600
-@@ -58,6 +58,7 @@
- #endif
- EXPORT_SYMBOL(journal_flush);
- EXPORT_SYMBOL(journal_revoke);
-+EXPORT_SYMBOL(journal_callback_set);
-
- EXPORT_SYMBOL(journal_init_dev);
- EXPORT_SYMBOL(journal_init_inode);
---- kernel-2.4.18-pristine/fs/jbd/transaction.c 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/fs/jbd/transaction.c 2002-10-14 14:08:23.000000000 -0600
-@@ -57,6 +57,7 @@
- transaction->t_state = T_RUNNING;
- transaction->t_tid = journal->j_transaction_sequence++;
- transaction->t_expires = jiffies + journal->j_commit_interval;
-+ INIT_LIST_HEAD(&transaction->t_jcb);
-
- /* Set up the commit timer for the new transaction. */
- J_ASSERT (!journal->j_commit_timer_active);
-@@ -201,6 +202,20 @@
- return 0;
- }
-
-+/* Allocate a new handle. This should probably be in a slab... */
-+static handle_t *new_handle(int nblocks)
-+{
-+ handle_t *handle = jbd_kmalloc(sizeof (handle_t), GFP_NOFS);
-+ if (!handle)
-+ return NULL;
-+ memset(handle, 0, sizeof (handle_t));
-+ handle->h_buffer_credits = nblocks;
-+ handle->h_ref = 1;
-+ INIT_LIST_HEAD(&handle->h_jcb);
-+
-+ return handle;
-+}
-+
- /*
- * Obtain a new handle.
- *
-@@ -227,14 +242,11 @@
- handle->h_ref++;
- return handle;
- }
--
-- handle = jbd_kmalloc(sizeof (handle_t), GFP_NOFS);
-+
-+ handle = new_handle(nblocks);
- if (!handle)
- return ERR_PTR(-ENOMEM);
-- memset (handle, 0, sizeof (handle_t));
-
-- handle->h_buffer_credits = nblocks;
-- handle->h_ref = 1;
- current->journal_info = handle;
-
- err = start_this_handle(journal, handle);
-@@ -333,14 +345,11 @@
-
- if (is_journal_aborted(journal))
- return ERR_PTR(-EIO);
--
-- handle = jbd_kmalloc(sizeof (handle_t), GFP_NOFS);
-+
-+ handle = new_handle(nblocks);
- if (!handle)
- return ERR_PTR(-ENOMEM);
-- memset (handle, 0, sizeof (handle_t));
-
-- handle->h_buffer_credits = nblocks;
-- handle->h_ref = 1;
- current->journal_info = handle;
-
- err = try_start_this_handle(journal, handle);
-@@ -1319,6 +1328,28 @@
- #endif
-
- /*
-+ * Register a callback function for this handle. The function will be
-+ * called when the transaction that this handle is part of has been
-+ * committed to disk with the original callback data struct and the
-+ * error status of the journal as parameters. There is no guarantee of
-+ * ordering between handles within a single transaction, nor between
-+ * callbacks registered on the same handle.
-+ *
-+ * The caller is responsible for allocating the journal_callback struct.
-+ * This is to allow the caller to add as much extra data to the callback
-+ * as needed, but reduce the overhead of multiple allocations. The caller
-+ * allocated struct must start with a struct journal_callback at offset 0,
-+ * and has the caller-specific data afterwards.
-+ */
-+void journal_callback_set(handle_t *handle,
-+ void (*func)(struct journal_callback *jcb, int error),
-+ struct journal_callback *jcb)
-+{
-+ list_add(&jcb->jcb_list, &handle->h_jcb);
-+ jcb->jcb_func = func;
-+}
-+
-+/*
- * All done for a particular handle.
- *
- * There is not much action needed here. We just return any remaining
-@@ -1383,7 +1414,10 @@
- wake_up(&journal->j_wait_transaction_locked);
- }
-
-- /*
-+ /* Move callbacks from the handle to the transaction. */
-+ list_splice(&handle->h_jcb, &transaction->t_jcb);
-+
-+ /*
- * If the handle is marked SYNC, we need to set another commit
- * going! We also want to force a commit if the current
- * transaction is occupying too much of the log, or if the
---- kernel-2.4.18-pristine/include/linux/jbd.h 2002-10-14 13:47:20.000000000 -0600
-+++ kernel-2.4.18/include/linux/jbd.h 2002-10-14 14:08:23.000000000 -0600
-@@ -257,6 +257,13 @@
- return bh->b_private;
- }
-
-+#define HAVE_JOURNAL_CALLBACK_STATUS
-+struct journal_callback {
-+ struct list_head jcb_list;
-+ void (*jcb_func)(struct journal_callback *jcb, int error);
-+ /* user data goes here */
-+};
-+
- struct jbd_revoke_table_s;
-
- /* The handle_t type represents a single atomic update being performed
-@@ -287,6 +294,12 @@
- operations */
- int h_err;
-
-+ /* List of application registered callbacks for this handle.
-+ * The function(s) will be called after the transaction that
-+ * this handle is part of has been committed to disk.
-+ */
-+ struct list_head h_jcb;
-+
- /* Flags */
- unsigned int h_sync: 1; /* sync-on-close */
- unsigned int h_jdata: 1; /* force data journaling */
-@@ -406,6 +419,10 @@
-
- /* How many handles used this transaction? */
- int t_handle_count;
-+
-+ /* List of registered callback functions for this transaction.
-+ * Called when the transaction is committed. */
-+ struct list_head t_jcb;
- };
-
-
-@@ -654,6 +671,9 @@
- extern int journal_try_to_free_buffers(journal_t *, struct page *, int);
- extern int journal_stop(handle_t *);
- extern int journal_flush (journal_t *);
-+extern void journal_callback_set(handle_t *handle,
-+ void (*fn)(struct journal_callback *,int),
-+ struct journal_callback *jcb);
-
- extern void journal_lock_updates (journal_t *);
- extern void journal_unlock_updates (journal_t *);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff