Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

35 files changed, 249 insertions, 198 deletions

diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index bfc28abe1cb1c1..31ee06590de549 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -30,7 +30,7 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir,
 				       struct dentry *dentry,
 				       struct nameidata *nd);
 static int afs_mntpt_open(struct inode *inode, struct file *file);
-static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
+static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
 
 struct file_operations afs_mntpt_file_operations = {
 	.open		= afs_mntpt_open,
@@ -233,7 +233,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
 /*
  * follow a link from a mountpoint directory, thus causing it to be mounted
  */
-static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct vfsmount *newmnt;
 	struct dentry *old_dentry;
@@ -249,7 +249,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
 	newmnt = afs_mntpt_do_automount(dentry);
 	if (IS_ERR(newmnt)) {
 		path_release(nd);
-		return PTR_ERR(newmnt);
+		return (void *)newmnt;
 	}
 
 	old_dentry = nd->dentry;
@@ -267,7 +267,7 @@ static int afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
 	}
 
 	kleave(" = %d", err);
-	return err;
+	return ERR_PTR(err);
 } /* end afs_mntpt_follow_link() */
 
 /*****************************************************************************/
diff --git a/fs/autofs/symlink.c b/fs/autofs/symlink.c
index f028396f138395..52e8772b066e33 100644
--- a/fs/autofs/symlink.c
+++ b/fs/autofs/symlink.c
@@ -12,11 +12,12 @@
 
 #include "autofs_i.h"
 
-static int autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
+/* Nothing to release.. */
+static void *autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	char *s=((struct autofs_symlink *)dentry->d_inode->u.generic_ip)->data;
 	nd_set_link(nd, s);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations autofs_symlink_inode_operations = {
diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c
index c265a66edf0f76..2ea2c98fd84bdc 100644
--- a/fs/autofs4/symlink.c
+++ b/fs/autofs4/symlink.c
@@ -12,11 +12,11 @@
 
 #include "autofs_i.h"
 
-static int autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct autofs_info *ino = autofs4_dentry_ino(dentry);
 	nd_set_link(nd, (char *)ino->u.symlink);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations autofs4_symlink_inode_operations = {
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index de5bb280a82895..e0a6025f1d06a7 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -41,8 +41,8 @@ static struct inode *befs_alloc_inode(struct super_block *sb);
 static void befs_destroy_inode(struct inode *inode);
 static int befs_init_inodecache(void);
 static void befs_destroy_inodecache(void);
-static int befs_follow_link(struct dentry *, struct nameidata *);
-static void befs_put_link(struct dentry *, struct nameidata *);
+static void *befs_follow_link(struct dentry *, struct nameidata *);
+static void befs_put_link(struct dentry *, struct nameidata *, void *);
 static int befs_utf2nls(struct super_block *sb, const char *in, int in_len,
 			char **out, int *out_len);
 static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
@@ -461,7 +461,7 @@ befs_destroy_inodecache(void)
  * The data stream become link name. Unless the LONG_SYMLINK
  * flag is set.
  */
-static int
+static void *
 befs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
@@ -487,10 +487,10 @@ befs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	}
 
 	nd_set_link(nd, link);
-	return 0;
+	return NULL;
 }
 
-static void befs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void befs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
 {
 	befs_inode_info *befs_ino = BEFS_I(dentry->d_inode);
 	if (befs_ino->i_flags & BEFS_LONG_SYMLINK) {
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 78af5850c55812..1fd21f66f24351 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -83,8 +83,8 @@ extern int cifs_dir_notify(struct file *, unsigned long arg);
 extern struct dentry_operations cifs_dentry_ops;
 
 /* Functions related to symlinks */
-extern int cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
-extern void cifs_put_link(struct dentry *direntry, struct nameidata *nd);
+extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
+extern void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *);
 extern int cifs_readlink(struct dentry *direntry, char __user *buffer, 
 			 int buflen);
 extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 30ab70ce554716..3497125189dfde 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -643,7 +643,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 			 netfid, length,
 			 pfLock->fl_start, numUnlock, numLock, lockType,
 			 wait_flag);
-	if (rc == 0 && (pfLock->fl_flags & FL_POSIX))
+	if (pfLock->fl_flags & FL_POSIX)
 		posix_lock_file_wait(file, pfLock);
 	FreeXid(xid);
 	return rc;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index bde0fabfece0ae..ab925ef4f863c9 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -92,7 +92,7 @@ cifs_hl_exit:
 	return rc;
 }
 
-int
+void *
 cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
 {
 	struct inode *inode = direntry->d_inode;
@@ -148,7 +148,7 @@ out:
 out_no_free:
 	FreeXid(xid);
 	nd_set_link(nd, target_path);
-	return 0;
+	return NULL;	/* No cookie */
 }
 
 int
@@ -330,7 +330,7 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen)
 	return rc;
 }
 
-void cifs_put_link(struct dentry *direntry, struct nameidata *nd)
+void cifs_put_link(struct dentry *direntry, struct nameidata *nd, void *cookie)
 {
 	char *p = nd_get_link(nd);
 	if (!IS_ERR(p))
diff --git a/fs/devfs/base.c b/fs/devfs/base.c
index 1ecfe1f184d4fd..8b679b67e5e0f7 100644
--- a/fs/devfs/base.c
+++ b/fs/devfs/base.c
@@ -2491,11 +2491,11 @@ static int devfs_mknod(struct inode *dir, struct dentry *dentry, int mode,
 	return 0;
 }				/*  End Function devfs_mknod  */
 
-static int devfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *devfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct devfs_entry *p = get_devfs_entry_from_vfs_inode(dentry->d_inode);
 	nd_set_link(nd, p ? p->u.symlink.linkname : ERR_PTR(-ENODEV));
-	return 0;
+	return NULL;
 }				/*  End Function devfs_follow_link  */
 
 static struct inode_operations devfs_iops = {
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index 9f7bac01d55763..1e67d87cfa913b 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -21,11 +21,11 @@
 #include "xattr.h"
 #include <linux/namei.h>
 
-static int ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *ext2_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct ext2_inode_info *ei = EXT2_I(dentry->d_inode);
 	nd_set_link(nd, (char *)ei->i_data);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations ext2_symlink_inode_operations = {
diff --git a/fs/ext3/symlink.c b/fs/ext3/symlink.c
index 8c3e72818fb089..4f79122cde6705 100644
--- a/fs/ext3/symlink.c
+++ b/fs/ext3/symlink.c
@@ -23,11 +23,11 @@
 #include <linux/namei.h>
 #include "xattr.h"
 
-static int ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void * ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct ext3_inode_info *ei = EXT3_I(dentry->d_inode);
 	nd_set_link(nd, (char*)ei->i_data);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations ext3_symlink_inode_operations = {
diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
index ac677ab262b2b4..d0401dc68d4130 100644
--- a/fs/freevxfs/vxfs_immed.c
+++ b/fs/freevxfs/vxfs_immed.c
@@ -38,7 +38,7 @@
 #include "vxfs_inode.h"
 
 
-static int	vxfs_immed_follow_link(struct dentry *, struct nameidata *);
+static void *	vxfs_immed_follow_link(struct dentry *, struct nameidata *);
 
 static int	vxfs_immed_readpage(struct file *, struct page *);
 
@@ -72,12 +72,12 @@ struct address_space_operations vxfs_immed_aops = {
  * Returns:
  *   Zero on success, else a negative error code.
  */
-static int
+static void *
 vxfs_immed_follow_link(struct dentry *dp, struct nameidata *np)
 {
 	struct vxfs_inode_info		*vip = VXFS_INO(dp->d_inode);
 	nd_set_link(np, vip->vii_immed.vi_immed);
-	return 0;
+	return NULL;
 }
 
 /**
diff --git a/fs/hppfs/hppfs_kern.c b/fs/hppfs/hppfs_kern.c
index ff150fedb98150..52930915bad8c8 100644
--- a/fs/hppfs/hppfs_kern.c
+++ b/fs/hppfs/hppfs_kern.c
@@ -38,7 +38,7 @@ struct hppfs_inode_info {
 
 static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
 {
-	return(list_entry(inode, struct hppfs_inode_info, vfs_inode));
+	return container_of(inode, struct hppfs_inode_info, vfs_inode);
 }
 
 #define HPPFS_SUPER_MAGIC 0xb00000ee
@@ -662,42 +662,36 @@ static int hppfs_readlink(struct dentry *dentry, char *buffer, int buflen)
 {
 	struct file *proc_file;
 	struct dentry *proc_dentry;
-	int (*readlink)(struct dentry *, char *, int);
-	int err, n;
+	int ret;
 
 	proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
 	proc_file = dentry_open(dget(proc_dentry), NULL, O_RDONLY);
-	err = PTR_ERR(proc_dentry);
-	if(IS_ERR(proc_dentry))
-		return(err);
+	if (IS_ERR(proc_file))
+		return PTR_ERR(proc_file);
 
-	readlink = proc_dentry->d_inode->i_op->readlink;
-	n = (*readlink)(proc_dentry, buffer, buflen);
+	ret = proc_dentry->d_inode->i_op->readlink(proc_dentry, buffer, buflen);
 
 	fput(proc_file);
 
-	return(n);
+	return ret;
 }
 
-static int hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void* hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct file *proc_file;
 	struct dentry *proc_dentry;
-	int (*follow_link)(struct dentry *, struct nameidata *);
-	int err, n;
+	void *ret;
 
 	proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
 	proc_file = dentry_open(dget(proc_dentry), NULL, O_RDONLY);
-	err = PTR_ERR(proc_dentry);
-	if(IS_ERR(proc_dentry))
-		return(err);
+	if (IS_ERR(proc_file))
+		return proc_file;
 
-	follow_link = proc_dentry->d_inode->i_op->follow_link;
-	n = (*follow_link)(proc_dentry, nd);
+	ret = proc_dentry->d_inode->i_op->follow_link(proc_dentry, nd);
 
 	fput(proc_file);
 
-	return(n);
+	return ret;
 }
 
 static struct inode_operations hppfs_dir_iops = {
diff --git a/fs/inotify.c b/fs/inotify.c
index 868901b1e77930..2e4e2a57708cf9 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -353,7 +353,7 @@ static int inotify_dev_get_wd(struct inotify_device *dev,
 	do {
 		if (unlikely(!idr_pre_get(&dev->idr, GFP_KERNEL)))
 			return -ENOSPC;
-		ret = idr_get_new_above(&dev->idr, watch, dev->last_wd, &watch->wd);
+		ret = idr_get_new_above(&dev->idr, watch, dev->last_wd+1, &watch->wd);
 	} while (ret == -EAGAIN);
 
 	return ret;
diff --git a/fs/ioprio.c b/fs/ioprio.c
index 97e1f088ba00b3..d1c1f2b2c9da97 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -62,6 +62,8 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
 
 			break;
 		case IOPRIO_CLASS_IDLE:
+			if (!capable(CAP_SYS_ADMIN))
+				return -EPERM;
 			break;
 		default:
 			return -EINVAL;
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index 65ab6b001dcac9..82ef484f5e1233 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -18,7 +18,7 @@
 #include <linux/namei.h>
 #include "nodelist.h"
 
-static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
+static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
 
 struct inode_operations jffs2_symlink_inode_operations =
 {	
@@ -27,9 +27,10 @@ struct inode_operations jffs2_symlink_inode_operations =
 	.setattr =	jffs2_setattr
 };
 
-static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
+	char *p = (char *)f->dents;
 	
 	/*
 	 * We don't acquire the f->sem mutex here since the only data we
@@ -45,19 +46,20 @@ static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
 	 * nd_set_link() call.
 	 */
 	
-	if (!f->dents) {
+	if (!p) {
 		printk(KERN_ERR "jffs2_follow_link(): can't find symlink taerget\n");
-		return -EIO;
+		p = ERR_PTR(-EIO);
+	} else {
+		D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents));
 	}
-	D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents));
 
-	nd_set_link(nd, (char *)f->dents);
+	nd_set_link(nd, p);
 	
 	/*
 	 * We unlock the f->sem mutex but VFS will use the f->dents string. This is safe
 	 * since the only way that may cause f->dents to be changed is iput() operation.
 	 * But VFS will not use f->dents after iput() has been called.
 	 */
-	return 0;
+	return NULL;
 }
 
diff --git a/fs/jfs/symlink.c b/fs/jfs/symlink.c
index 287d8d6c3cfd6f..16477b3835e1d6 100644
--- a/fs/jfs/symlink.c
+++ b/fs/jfs/symlink.c
@@ -22,11 +22,11 @@
 #include "jfs_inode.h"
 #include "jfs_xattr.h"
 
-static int jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	char *s = JFS_IP(dentry->d_inode)->i_inline;
 	nd_set_link(nd, s);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations jfs_symlink_inode_operations = {
diff --git a/fs/namei.c b/fs/namei.c
index e2c1413a55c43a..91ce1f24bbb635 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -501,6 +501,7 @@ struct path {
 static inline int __do_follow_link(struct path *path, struct nameidata *nd)
 {
 	int error;
+	void *cookie;
 	struct dentry *dentry = path->dentry;
 
 	touch_atime(path->mnt, dentry);
@@ -508,13 +509,15 @@ static inline int __do_follow_link(struct path *path, struct nameidata *nd)
 
 	if (path->mnt == nd->mnt)
 		mntget(path->mnt);
-	error = dentry->d_inode->i_op->follow_link(dentry, nd);
-	if (!error) {
+	cookie = dentry->d_inode->i_op->follow_link(dentry, nd);
+	error = PTR_ERR(cookie);
+	if (!IS_ERR(cookie)) {
 		char *s = nd_get_link(nd);
+		error = 0;
 		if (s)
 			error = __vfs_follow_link(nd, s);
 		if (dentry->d_inode->i_op->put_link)
-			dentry->d_inode->i_op->put_link(dentry, nd);
+			dentry->d_inode->i_op->put_link(dentry, nd, cookie);
 	}
 	dput(dentry);
 	mntput(path->mnt);
@@ -2344,15 +2347,17 @@ out:
 int generic_readlink(struct dentry *dentry, char __user *buffer, int buflen)
 {
 	struct nameidata nd;
-	int res;
+	void *cookie;
+
 	nd.depth = 0;
-	res = dentry->d_inode->i_op->follow_link(dentry, &nd);
-	if (!res) {
-		res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd));
+	cookie = dentry->d_inode->i_op->follow_link(dentry, &nd);
+	if (!IS_ERR(cookie)) {
+		int res = vfs_readlink(dentry, buffer, buflen, nd_get_link(&nd));
 		if (dentry->d_inode->i_op->put_link)
-			dentry->d_inode->i_op->put_link(dentry, &nd);
+			dentry->d_inode->i_op->put_link(dentry, &nd, cookie);
+		cookie = ERR_PTR(res);
 	}
-	return res;
+	return PTR_ERR(cookie);
 }
 
 int vfs_follow_link(struct nameidata *nd, const char *link)
@@ -2395,23 +2400,20 @@ int page_readlink(struct dentry *dentry, char __user *buffer, int buflen)
 	return res;
 }
 
-int page_follow_link_light(struct dentry *dentry, struct nameidata *nd)
+void *page_follow_link_light(struct dentry *dentry, struct nameidata *nd)
 {
-	struct page *page;
+	struct page *page = NULL;
 	nd_set_link(nd, page_getlink(dentry, &page));
-	return 0;
+	return page;
 }
 
-void page_put_link(struct dentry *dentry, struct nameidata *nd)
+void page_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
 {
-	if (!IS_ERR(nd_get_link(nd))) {
-		struct page *page;
-		page = find_get_page(dentry->d_inode->i_mapping, 0);
-		if (!page)
-			BUG();
+	struct page *page = cookie;
+
+	if (page) {
 		kunmap(page);
 		page_cache_release(page);
-		page_cache_release(page);
 	}
 }
 
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index b38a57e78a63d8..2df639f143e806 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -182,14 +182,16 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
 		/* We requested READDIRPLUS, but the server doesn't grok it */
 		if (error == -ENOTSUPP && desc->plus) {
 			NFS_SERVER(inode)->caps &= ~NFS_CAP_READDIRPLUS;
-			NFS_FLAGS(inode) &= ~NFS_INO_ADVISE_RDPLUS;
+			clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
 			desc->plus = 0;
 			goto again;
 		}
 		goto error;
 	}
 	SetPageUptodate(page);
-	NFS_FLAGS(inode) |= NFS_INO_INVALID_ATIME;
+	spin_lock(&inode->i_lock);
+	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+	spin_unlock(&inode->i_lock);
 	/* Ensure consistent page alignment of the data.
 	 * Note: assumes we have exclusive access to this mapping either
 	 *	 through inode->i_sem or some other mechanism.
@@ -462,7 +464,9 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
 						page,
 						NFS_SERVER(inode)->dtsize,
 						desc->plus);
-	NFS_FLAGS(inode) |= NFS_INO_INVALID_ATIME;
+	spin_lock(&inode->i_lock);
+	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+	spin_unlock(&inode->i_lock);
 	desc->page = page;
 	desc->ptr = kmap(page);		/* matching kunmap in nfs_do_filldir */
 	if (desc->error >= 0) {
@@ -545,7 +549,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 			break;
 		}
 		if (res == -ETOOSMALL && desc->plus) {
-			NFS_FLAGS(inode) &= ~NFS_INO_ADVISE_RDPLUS;
+			clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
 			nfs_zap_caches(inode);
 			desc->plus = 0;
 			desc->entry->eof = 0;
@@ -608,7 +612,7 @@ static inline int nfs_check_verifier(struct inode *dir, struct dentry *dentry)
 {
 	if (IS_ROOT(dentry))
 		return 1;
-	if ((NFS_FLAGS(dir) & NFS_INO_INVALID_ATTR) != 0
+	if ((NFS_I(dir)->cache_validity & NFS_INO_INVALID_ATTR) != 0
 			|| nfs_attribute_timeout(dir))
 		return 0;
 	return nfs_verify_change_attribute(dir, (unsigned long)dentry->d_fsdata);
@@ -935,6 +939,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
 	error = nfs_revalidate_inode(NFS_SERVER(dir), dir);
 	if (error < 0) {
 		res = ERR_PTR(error);
+		unlock_kernel();
 		goto out;
 	}
 
@@ -1575,11 +1580,12 @@ out:
 
 int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, struct nfs_access_entry *res)
 {
-	struct nfs_access_entry *cache = &NFS_I(inode)->cache_access;
+	struct nfs_inode *nfsi = NFS_I(inode);
+	struct nfs_access_entry *cache = &nfsi->cache_access;
 
 	if (cache->cred != cred
 			|| time_after(jiffies, cache->jiffies + NFS_ATTRTIMEO(inode))
-			|| (NFS_FLAGS(inode) & NFS_INO_INVALID_ACCESS))
+			|| (nfsi->cache_validity & NFS_INO_INVALID_ACCESS))
 		return -ENOENT;
 	memcpy(res, cache, sizeof(*res));
 	return 0;
@@ -1587,14 +1593,18 @@ int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, struct nfs
 
 void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *set)
 {
-	struct nfs_access_entry *cache = &NFS_I(inode)->cache_access;
+	struct nfs_inode *nfsi = NFS_I(inode);
+	struct nfs_access_entry *cache = &nfsi->cache_access;
 
 	if (cache->cred != set->cred) {
 		if (cache->cred)
 			put_rpccred(cache->cred);
 		cache->cred = get_rpccred(set->cred);
 	}
-	NFS_FLAGS(inode) &= ~NFS_INO_INVALID_ACCESS;
+	/* FIXME: replace current access_cache BKL reliance with inode->i_lock */
+	spin_lock(&inode->i_lock);
+	nfsi->cache_validity &= ~NFS_INO_INVALID_ACCESS;
+	spin_unlock(&inode->i_lock);
 	cache->jiffies = set->jiffies;
 	cache->mask = set->mask;
 }
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 5621ba9885f48a..f6b9eda925c526 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -134,9 +134,10 @@ nfs_file_release(struct inode *inode, struct file *filp)
  */
 static int nfs_revalidate_file(struct inode *inode, struct file *filp)
 {
+	struct nfs_inode *nfsi = NFS_I(inode);
 	int retval = 0;
 
-	if ((NFS_FLAGS(inode) & NFS_INO_REVAL_PAGECACHE) || nfs_attribute_timeout(inode))
+	if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) || nfs_attribute_timeout(inode))
 		retval = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
 	nfs_revalidate_mapping(inode, filp->f_mapping);
 	return 0;
@@ -164,7 +165,7 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
 		goto force_reval;
 	if (nfsi->npages != 0)
 		return 0;
-	if (!(NFS_FLAGS(inode) & NFS_INO_REVAL_PAGECACHE) && !nfs_attribute_timeout(inode))
+	if (!(nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) && !nfs_attribute_timeout(inode))
 		return 0;
 force_reval:
 	return __nfs_revalidate_inode(server, inode);
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index bb7ca022bcb2b6..541b418327c8b1 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -615,14 +615,18 @@ nfs_zap_caches(struct inode *inode)
 	struct nfs_inode *nfsi = NFS_I(inode);
 	int mode = inode->i_mode;
 
+	spin_lock(&inode->i_lock);
+
 	NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
 	NFS_ATTRTIMEO_UPDATE(inode) = jiffies;
 
 	memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode)));
 	if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
-		nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
 	else
-		nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
+
+	spin_unlock(&inode->i_lock);
 }
 
 static void nfs_zap_acl_cache(struct inode *inode)
@@ -632,7 +636,9 @@ static void nfs_zap_acl_cache(struct inode *inode)
 	clear_acl_cache = NFS_PROTO(inode)->clear_acl_cache;
 	if (clear_acl_cache != NULL)
 		clear_acl_cache(inode);
-	NFS_I(inode)->flags &= ~NFS_INO_INVALID_ACL;
+	spin_lock(&inode->i_lock);
+	NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL;
+	spin_unlock(&inode->i_lock);
 }
 
 /*
@@ -739,7 +745,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 			inode->i_fop = &nfs_dir_operations;
 			if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS)
 			    && fattr->size <= NFS_LIMIT_READDIRPLUS)
-				NFS_FLAGS(inode) |= NFS_INO_ADVISE_RDPLUS;
+				set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
 		} else if (S_ISLNK(inode->i_mode))
 			inode->i_op = &nfs_symlink_inode_operations;
 		else
@@ -841,7 +847,9 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
 			inode->i_uid = attr->ia_uid;
 		if ((attr->ia_valid & ATTR_GID) != 0)
 			inode->i_gid = attr->ia_gid;
-		NFS_FLAGS(inode) |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+		spin_lock(&inode->i_lock);
+		NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+		spin_unlock(&inode->i_lock);
 	}
 	if ((attr->ia_valid & ATTR_SIZE) != 0) {
 		inode->i_size = attr->ia_size;
@@ -849,31 +857,47 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
 	}
 }
 
+static int nfs_wait_schedule(void *word)
+{
+	if (signal_pending(current))
+		return -ERESTARTSYS;
+	schedule();
+	return 0;
+}
+
 /*
  * Wait for the inode to get unlocked.
- * (Used for NFS_INO_LOCKED and NFS_INO_REVALIDATING).
  */
-static int
-nfs_wait_on_inode(struct inode *inode, int flag)
+static int nfs_wait_on_inode(struct inode *inode)
 {
 	struct rpc_clnt	*clnt = NFS_CLIENT(inode);
 	struct nfs_inode *nfsi = NFS_I(inode);
-
+	sigset_t oldmask;
 	int error;
-	if (!(NFS_FLAGS(inode) & flag))
-		return 0;
+
 	atomic_inc(&inode->i_count);
-	error = nfs_wait_event(clnt, nfsi->nfs_i_wait,
-				!(NFS_FLAGS(inode) & flag));
+	rpc_clnt_sigmask(clnt, &oldmask);
+	error = wait_on_bit_lock(&nfsi->flags, NFS_INO_REVALIDATING,
+					nfs_wait_schedule, TASK_INTERRUPTIBLE);
+	rpc_clnt_sigunmask(clnt, &oldmask);
 	iput(inode);
+
 	return error;
 }
 
+static void nfs_wake_up_inode(struct inode *inode)
+{
+	struct nfs_inode *nfsi = NFS_I(inode);
+
+	clear_bit(NFS_INO_REVALIDATING, &nfsi->flags);
+	smp_mb__after_clear_bit();
+	wake_up_bit(&nfsi->flags, NFS_INO_REVALIDATING);
+}
+
 int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 {
 	struct inode *inode = dentry->d_inode;
-	struct nfs_inode *nfsi = NFS_I(inode);
-	int need_atime = nfsi->flags & NFS_INO_INVALID_ATIME;
+	int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
 	int err;
 
 	if (__IS_FLG(inode, MS_NOATIME))
@@ -1019,7 +1043,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 	struct nfs_fattr fattr;
 	struct nfs_inode *nfsi = NFS_I(inode);
 	unsigned long verifier;
-	unsigned int flags;
+	unsigned long cache_validity;
 
 	dfprintk(PAGECACHE, "NFS: revalidating (%s/%Ld)\n",
 		inode->i_sb->s_id, (long long)NFS_FILEID(inode));
@@ -1030,18 +1054,19 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 	if (NFS_STALE(inode))
  		goto out_nowait;
 
-	while (NFS_REVALIDATING(inode)) {
-		status = nfs_wait_on_inode(inode, NFS_INO_REVALIDATING);
-		if (status < 0)
-			goto out_nowait;
-		if (NFS_ATTRTIMEO(inode) == 0)
-			continue;
-		if (NFS_FLAGS(inode) & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ATIME))
-			continue;
-		status = NFS_STALE(inode) ? -ESTALE : 0;
-		goto out_nowait;
+	status = nfs_wait_on_inode(inode);
+	if (status < 0)
+		goto out;
+	if (NFS_STALE(inode)) {
+		status = -ESTALE;
+		/* Do we trust the cached ESTALE? */
+		if (NFS_ATTRTIMEO(inode) != 0) {
+			if (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ATIME)) {
+				/* no */
+			} else
+				goto out;
+		}
 	}
-	NFS_FLAGS(inode) |= NFS_INO_REVALIDATING;
 
 	/* Protect against RPC races by saving the change attribute */
 	verifier = nfs_save_change_attribute(inode);
@@ -1053,7 +1078,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 		if (status == -ESTALE) {
 			nfs_zap_caches(inode);
 			if (!S_ISDIR(inode->i_mode))
-				NFS_FLAGS(inode) |= NFS_INO_STALE;
+				set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
 		}
 		goto out;
 	}
@@ -1065,25 +1090,30 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 			 (long long)NFS_FILEID(inode), status);
 		goto out;
 	}
-	flags = nfsi->flags;
-	nfsi->flags &= ~NFS_INO_REVAL_PAGECACHE;
+	spin_lock(&inode->i_lock);
+	cache_validity = nfsi->cache_validity;
+	nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
+
 	/*
 	 * We may need to keep the attributes marked as invalid if
 	 * we raced with nfs_end_attr_update().
 	 */
 	if (verifier == nfsi->cache_change_attribute)
-		nfsi->flags &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME);
-	/* Do the page cache invalidation */
+		nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME);
+	spin_unlock(&inode->i_lock);
+
 	nfs_revalidate_mapping(inode, inode->i_mapping);
-	if (flags & NFS_INO_INVALID_ACL)
+
+	if (cache_validity & NFS_INO_INVALID_ACL)
 		nfs_zap_acl_cache(inode);
+
 	dfprintk(PAGECACHE, "NFS: (%s/%Ld) revalidation complete\n",
 		inode->i_sb->s_id,
 		(long long)NFS_FILEID(inode));
 
-out:
-	NFS_FLAGS(inode) &= ~NFS_INO_REVALIDATING;
-	wake_up(&nfsi->nfs_i_wait);
+ out:
+	nfs_wake_up_inode(inode);
+
  out_nowait:
 	unlock_kernel();
 	return status;
@@ -1107,7 +1137,7 @@ int nfs_attribute_timeout(struct inode *inode)
  */
 int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 {
-	if (!(NFS_FLAGS(inode) & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
+	if (!(NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
 			&& !nfs_attribute_timeout(inode))
 		return NFS_STALE(inode) ? -ESTALE : 0;
 	return __nfs_revalidate_inode(server, inode);
@@ -1122,19 +1152,23 @@ void nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
 {
 	struct nfs_inode *nfsi = NFS_I(inode);
 
-	if (nfsi->flags & NFS_INO_INVALID_DATA) {
+	if (nfsi->cache_validity & NFS_INO_INVALID_DATA) {
 		if (S_ISREG(inode->i_mode)) {
 			if (filemap_fdatawrite(mapping) == 0)
 				filemap_fdatawait(mapping);
 			nfs_wb_all(inode);
 		}
 		invalidate_inode_pages2(mapping);
-		nfsi->flags &= ~NFS_INO_INVALID_DATA;
+
+		spin_lock(&inode->i_lock);
+		nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
 		if (S_ISDIR(inode->i_mode)) {
 			memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
 			/* This ensures we revalidate child dentries */
 			nfsi->cache_change_attribute++;
 		}
+		spin_unlock(&inode->i_lock);
+
 		dfprintk(PAGECACHE, "NFS: (%s/%Ld) data cache invalidated\n",
 				inode->i_sb->s_id,
 				(long long)NFS_FILEID(inode));
@@ -1164,10 +1198,12 @@ void nfs_end_data_update(struct inode *inode)
 
 	if (!nfs_have_delegation(inode, FMODE_READ)) {
 		/* Mark the attribute cache for revalidation */
-		nfsi->flags |= NFS_INO_INVALID_ATTR;
+		spin_lock(&inode->i_lock);
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
 		/* Directories and symlinks: invalidate page cache too */
 		if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
-			nfsi->flags |= NFS_INO_INVALID_DATA;
+			nfsi->cache_validity |= NFS_INO_INVALID_DATA;
+		spin_unlock(&inode->i_lock);
 	}
 	nfsi->cache_change_attribute ++;
 	atomic_dec(&nfsi->data_updates);
@@ -1192,6 +1228,8 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
 	if (nfs_have_delegation(inode, FMODE_READ))
 		return 0;
 
+	spin_lock(&inode->i_lock);
+
 	/* Are we in the process of updating data on the server? */
 	data_unstable = nfs_caches_unstable(inode);
 
@@ -1200,19 +1238,23 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
 				&& nfsi->change_attr == fattr->pre_change_attr)
 			nfsi->change_attr = fattr->change_attr;
 		if (nfsi->change_attr != fattr->change_attr) {
-			nfsi->flags |= NFS_INO_INVALID_ATTR;
+			nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
 			if (!data_unstable)
-				nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
+				nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
 		}
 	}
 
-	if ((fattr->valid & NFS_ATTR_FATTR) == 0)
+	if ((fattr->valid & NFS_ATTR_FATTR) == 0) {
+		spin_unlock(&inode->i_lock);
 		return 0;
+	}
 
 	/* Has the inode gone and changed behind our back? */
 	if (nfsi->fileid != fattr->fileid
-			|| (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
+			|| (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
+		spin_unlock(&inode->i_lock);
 		return -EIO;
+	}
 
 	cur_size = i_size_read(inode);
  	new_isize = nfs_size_to_loff_t(fattr->size);
@@ -1227,30 +1269,31 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
 
 	/* Verify a few of the more important attributes */
 	if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
-		nfsi->flags |= NFS_INO_INVALID_ATTR;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
 		if (!data_unstable)
-			nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
+			nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
 	}
 	if (cur_size != new_isize) {
-		nfsi->flags |= NFS_INO_INVALID_ATTR;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
 		if (nfsi->npages == 0)
-			nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
+			nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
 	}
 
 	/* Have any file permissions changed? */
 	if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
 			|| inode->i_uid != fattr->uid
 			|| inode->i_gid != fattr->gid)
-		nfsi->flags |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
 
 	/* Has the link count changed? */
 	if (inode->i_nlink != fattr->nlink)
-		nfsi->flags |= NFS_INO_INVALID_ATTR;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
 
 	if (!timespec_equal(&inode->i_atime, &fattr->atime))
-		nfsi->flags |= NFS_INO_INVALID_ATIME;
+		nfsi->cache_validity |= NFS_INO_INVALID_ATIME;
 
 	nfsi->read_cache_jiffies = fattr->timestamp;
+	spin_unlock(&inode->i_lock);
 	return 0;
 }
 
@@ -1289,11 +1332,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, unsign
 		goto out_err;
 	}
 
+	spin_lock(&inode->i_lock);
+
 	/*
 	 * Make sure the inode's type hasn't changed.
 	 */
-	if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
+	if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
+		spin_unlock(&inode->i_lock);
 		goto out_changed;
+	}
 
 	/*
 	 * Update the read time so we don't revalidate too often.
@@ -1384,8 +1431,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, unsign
 				|| S_ISLNK(inode->i_mode)))
 		invalid &= ~NFS_INO_INVALID_DATA;
 	if (!nfs_have_delegation(inode, FMODE_READ))
-		nfsi->flags |= invalid;
+		nfsi->cache_validity |= invalid;
 
+	spin_unlock(&inode->i_lock);
 	return 0;
  out_changed:
 	/*
@@ -1402,7 +1450,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, unsign
 	 */
 	nfs_invalidate_inode(inode);
  out_err:
-	NFS_FLAGS(inode) |= NFS_INO_STALE;
+	set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
 	return -ESTALE;
 }
 
@@ -1961,7 +2009,8 @@ static struct inode *nfs_alloc_inode(struct super_block *sb)
 	nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, SLAB_KERNEL);
 	if (!nfsi)
 		return NULL;
-	nfsi->flags = 0;
+	nfsi->flags = 0UL;
+	nfsi->cache_validity = 0UL;
 #ifdef CONFIG_NFS_V3_ACL
 	nfsi->acl_access = ERR_PTR(-EAGAIN);
 	nfsi->acl_default = ERR_PTR(-EAGAIN);
@@ -1993,7 +2042,6 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
 		nfsi->ndirty = 0;
 		nfsi->ncommit = 0;
 		nfsi->npages = 0;
-		init_waitqueue_head(&nfsi->nfs_i_wait);
 		nfs4_init_once(nfsi);
 	}
 }
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index 1b7a3ef2f8131f..6a5bbc0ae941aa 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -308,7 +308,9 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
 	nfs_begin_data_update(inode);
 	status = rpc_call(server->client_acl, ACLPROC3_SETACL,
 			  &args, &fattr, 0);
-	NFS_FLAGS(inode) |= NFS_INO_INVALID_ACCESS;
+	spin_lock(&inode->i_lock);
+	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS;
+	spin_unlock(&inode->i_lock);
 	nfs_end_data_update(inode);
 	dprintk("NFS reply setacl: %d\n", status);
 
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 6f866b8aa2d569..6ceb1d471f2064 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -140,7 +140,9 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode,
 		if (rdata->res.eof != 0 || result == 0)
 			break;
 	} while (count);
-	NFS_FLAGS(inode) |= NFS_INO_INVALID_ATIME;
+	spin_lock(&inode->i_lock);
+	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+	spin_unlock(&inode->i_lock);
 
 	if (count)
 		memclear_highpage_flush(page, rdata->args.pgbase, count);
@@ -473,7 +475,9 @@ void nfs_readpage_result(struct rpc_task *task)
 		}
 		task->tk_status = -EIO;
 	}
-	NFS_FLAGS(data->inode) |= NFS_INO_INVALID_ATIME;
+	spin_lock(&data->inode->i_lock);
+	NFS_I(data->inode)->cache_validity |= NFS_INO_INVALID_ATIME;
+	spin_unlock(&data->inode->i_lock);
 	data->complete(data, status);
 }
 
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 35f1065991441c..18dc95b0b64638 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -27,26 +27,14 @@
 
 /* Symlink caching in the page cache is even more simplistic
  * and straight-forward than readdir caching.
- *
- * At the beginning of the page we store pointer to struct page in question,
- * simplifying nfs_put_link() (if inode got invalidated we can't find the page
- * to be freed via pagecache lookup).
- * The NUL-terminated string follows immediately thereafter.
  */
 
-struct nfs_symlink {
-	struct page *page;
-	char body[0];
-};
-
 static int nfs_symlink_filler(struct inode *inode, struct page *page)
 {
-	const unsigned int pgbase = offsetof(struct nfs_symlink, body);
-	const unsigned int pglen = PAGE_SIZE - pgbase;
 	int error;
 
 	lock_kernel();
-	error = NFS_PROTO(inode)->readlink(inode, page, pgbase, pglen);
+	error = NFS_PROTO(inode)->readlink(inode, page, 0, PAGE_SIZE);
 	unlock_kernel();
 	if (error < 0)
 		goto error;
@@ -60,11 +48,10 @@ error:
 	return -EIO;
 }
 
-static int nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct inode *inode = dentry->d_inode;
 	struct page *page;
-	struct nfs_symlink *p;
 	void *err = ERR_PTR(nfs_revalidate_inode(NFS_SERVER(inode), inode));
 	if (err)
 		goto read_failed;
@@ -78,28 +65,20 @@ static int nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 		err = ERR_PTR(-EIO);
 		goto getlink_read_error;
 	}
-	p = kmap(page);
-	p->page = page;
-	nd_set_link(nd, p->body);
-	return 0;
+	nd_set_link(nd, kmap(page));
+	return page;
 
 getlink_read_error:
 	page_cache_release(page);
 read_failed:
 	nd_set_link(nd, err);
-	return 0;
+	return NULL;
 }
 
-static void nfs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void nfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
 {
-	char *s = nd_get_link(nd);
-	if (!IS_ERR(s)) {
-		struct nfs_symlink *p;
-		struct page *page;
-
-		p = container_of(s, struct nfs_symlink, body[0]);
-		page = p->page;
-
+	if (cookie) {
+		struct page *page = cookie;
 		kunmap(page);
 		page_cache_release(page);
 	}
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 07b9a065e9daa7..1697539a717177 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -287,6 +287,7 @@ out:
 	svc_exit_thread(rqstp);
 
 	/* Release module */
+	unlock_kernel();
 	module_put_and_exit(0);
 }
 
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index 21e21fe519e268..9eecc9939dfe59 100644
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -175,7 +175,7 @@ ToDo/Notes:
 	  the ntfs inode in memory if present.  Also, the ntfs inode has its
 	  own locking so it does not matter if the vfs inode is locked.
 	- Fix bug in mft record writing where we forgot to set the device in
-	  the buffers when mapping them after the VM had discarded them
+	  the buffers when mapping them after the VM had discarded them.
 	  Thanks to Martin MOKREJŠ for the bug report.
 
 2.1.22 - Many bug and race fixes and error handling improvements.
diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c
index 3f43bfe6184ea2..78adad7a988d98 100644
--- a/fs/ntfs/aops.c
+++ b/fs/ntfs/aops.c
@@ -924,6 +924,7 @@ static int ntfs_write_mst_block(struct page *page,
 			LCN lcn;
 			unsigned int vcn_ofs;
 
+			bh->b_bdev = vol->sb->s_bdev;
 			/* Obtain the vcn and offset of the current block. */
 			vcn = (VCN)block << bh_size_bits;
 			vcn_ofs = vcn & vol->cluster_size_mask;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index ace151fa487865..491f2d9f89acd9 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -890,7 +890,7 @@ static struct file_operations proc_seccomp_operations = {
 };
 #endif /* CONFIG_SECCOMP */
 
-static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct inode *inode = dentry->d_inode;
 	int error = -EACCES;
@@ -907,7 +907,7 @@ static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
 	error = PROC_I(inode)->op.proc_get_link(inode, &nd->dentry, &nd->mnt);
 	nd->last_type = LAST_BIND;
 out:
-	return error;
+	return ERR_PTR(error);
 }
 
 static int do_proc_readlink(struct dentry *dentry, struct vfsmount *mnt,
@@ -1692,11 +1692,11 @@ static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
 	return vfs_readlink(dentry,buffer,buflen,tmp);
 }
 
-static int proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	char tmp[30];
 	sprintf(tmp, "%d", current->tgid);
-	return vfs_follow_link(nd,tmp);
+	return ERR_PTR(vfs_follow_link(nd,tmp));
 }	
 
 static struct inode_operations proc_self_inode_operations = {
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 6c6315d0402871..abe8920313fb32 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -329,10 +329,10 @@ static void release_inode_number(unsigned int inum)
 	spin_unlock(&proc_inum_lock);
 }
 
-static int proc_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	nd_set_link(nd, PDE(dentry->d_inode)->data);
-	return 0;
+	return NULL;
 }
 
 static struct inode_operations proc_link_inode_operations = {
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index d9f614a57731bd..ff291c973a567f 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1985,7 +1985,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
 	 * iput doesn't deadlock in reiserfs_delete_xattrs. The locking
 	 * code really needs to be reworked, but this will take care of it
 	 * for now. -jeffm */
-	if (REISERFS_I(dir)->i_acl_default) {
+	if (REISERFS_I(dir)->i_acl_default && !IS_ERR(REISERFS_I(dir)->i_acl_default)) {
 		reiserfs_write_unlock_xattrs(dir->i_sb);
 		iput(inode);
 		reiserfs_write_lock_xattrs(dir->i_sb);
diff --git a/fs/smbfs/symlink.c b/fs/smbfs/symlink.c
index 8b069e06433d56..0c64bc3a0127e9 100644
--- a/fs/smbfs/symlink.c
+++ b/fs/smbfs/symlink.c
@@ -34,7 +34,7 @@ int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname)
 	return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname);
 }
 
-static int smb_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *smb_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	char *link = __getname();
 	DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry));
@@ -52,10 +52,10 @@ static int smb_follow_link(struct dentry *dentry, struct nameidata *nd)
 		}
 	}
 	nd_set_link(nd, link);
-	return 0;
+	return NULL;
 }
 
-static void smb_put_link(struct dentry *dentry, struct nameidata *nd)
+static void smb_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
 {
 	char *s = nd_get_link(nd);
 	if (!IS_ERR(s))
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index d727dc960634a2..970a33f03299b1 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -228,6 +228,10 @@ void sysfs_hash_and_remove(struct dentry * dir, const char * name)
 	struct sysfs_dirent * sd;
 	struct sysfs_dirent * parent_sd = dir->d_fsdata;
 
+	if (dir->d_inode == NULL)
+		/* no inode means this hasn't been made visible yet */
+		return;
+
 	down(&dir->d_inode->i_sem);
 	list_for_each_entry(sd, &parent_sd->s_children, s_sibling) {
 		if (!sd->s_element)
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index fae57c83a722f4..de402fa915f277 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -151,17 +151,17 @@ static int sysfs_getlink(struct dentry *dentry, char * path)
 
 }
 
-static int sysfs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *sysfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	int error = -ENOMEM;
 	unsigned long page = get_zeroed_page(GFP_KERNEL);
 	if (page)
 		error = sysfs_getlink(dentry, (char *) page); 
 	nd_set_link(nd, error ? ERR_PTR(error) : (char *)page);
-	return 0;
+	return NULL;
 }
 
-static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
 {
 	char *page = nd_get_link(nd);
 	if (!IS_ERR(page))
diff --git a/fs/sysv/symlink.c b/fs/sysv/symlink.c
index ed637db2dcb102..b85ce61d635ce2 100644
--- a/fs/sysv/symlink.c
+++ b/fs/sysv/symlink.c
@@ -8,10 +8,10 @@
 #include "sysv.h"
 #include <linux/namei.h>
 
-static int sysv_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *sysv_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	nd_set_link(nd, (char *)SYSV_I(dentry->d_inode)->i_data);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations sysv_fast_symlink_inode_operations = {
diff --git a/fs/ufs/symlink.c b/fs/ufs/symlink.c
index a0e49149098f2d..337512ed57814a 100644
--- a/fs/ufs/symlink.c
+++ b/fs/ufs/symlink.c
@@ -29,11 +29,11 @@
 #include <linux/namei.h>
 #include <linux/ufs_fs.h>
 
-static int ufs_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *ufs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct ufs_inode_info *p = UFS_I(dentry->d_inode);
 	nd_set_link(nd, (char*)p->i_u1.i_symlink);
-	return 0;
+	return NULL;
 }
 
 struct inode_operations ufs_fast_symlink_inode_operations = {
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 407e99359391ce..f252605514eb1d 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -374,7 +374,7 @@ linvfs_rename(
  * we need to be very careful about how much stack we use.
  * uio is kmalloced for this reason...
  */
-STATIC int
+STATIC void *
 linvfs_follow_link(
 	struct dentry		*dentry,
 	struct nameidata	*nd)
@@ -391,14 +391,14 @@ linvfs_follow_link(
 	link = (char *)kmalloc(MAXNAMELEN+1, GFP_KERNEL);
 	if (!link) {
 		nd_set_link(nd, ERR_PTR(-ENOMEM));
-		return 0;
+		return NULL;
 	}
 
 	uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL);
 	if (!uio) {
 		kfree(link);
 		nd_set_link(nd, ERR_PTR(-ENOMEM));
-		return 0;
+		return NULL;
 	}
 
 	vp = LINVFS_GET_VP(dentry->d_inode);
@@ -422,10 +422,10 @@ linvfs_follow_link(
 	kfree(uio);
 
 	nd_set_link(nd, link);
-	return 0;
+	return NULL;
 }
 
-static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd)
+static void linvfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
 {
 	char *s = nd_get_link(nd);
 	if (!IS_ERR(s))