25 files changed, 74 insertions, 84 deletions

diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 33e5243948f..52a057367f6 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -9,7 +9,7 @@ be able to use diff(1).
 
 --------------------------- dentry_operations --------------------------
 prototypes:
-        int (*d_revalidate)(struct dentry *, struct nameidata *);
+        int (*d_revalidate)(struct dentry *, unsigned int);
         int (*d_hash)(const struct dentry *, const struct inode *,
                         struct qstr *);
         int (*d_compare)(const struct dentry *, const struct inode *,
diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index ed9fbc23ece..56750b714d1 100644
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -431,3 +431,8 @@ release it yourself.
         d_alloc_root() is gone, along with a lot of bugs caused by code
 misusing it.  Replacement: d_make_root(inode).  The difference is,
 d_make_root() drops the reference to inode if dentry allocation fails.  
+
+--
+[mandatory]
+        The witch is dead!  Well, 1/3 of it, anyway.  ->d_revalidate() does *not*
+take struct nameidata anymore; just the flags.
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 279de219036..b9a406b2ed0 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -902,7 +902,7 @@ the VFS uses a default. As of kernel 2.6.22, the following members are
 defined:
 
 struct dentry_operations {
-        int (*d_revalidate)(struct dentry *, struct nameidata *);
+        int (*d_revalidate)(struct dentry *, unsigned int);
         int (*d_hash)(const struct dentry *, const struct inode *,
                         struct qstr *);
         int (*d_compare)(const struct dentry *, const struct inode *,
@@ -921,11 +921,11 @@ struct dentry_operations {
         dcache. Most filesystems leave this as NULL, because all their
         dentries in the dcache are valid
 
-        d_revalidate may be called in rcu-walk mode (nd->flags & LOOKUP_RCU).
+        d_revalidate may be called in rcu-walk mode (flags & LOOKUP_RCU).
         If in rcu-walk mode, the filesystem must revalidate the dentry without
         blocking or storing to the dentry, d_parent and d_inode should not be
-        used without care (because they can go NULL), instead nd->inode should
-        be used.
+        used without care (because they can change and, in d_inode case, even
+        become NULL under us).
 
         If a situation is encountered that rcu-walk cannot handle, return
         -ECHILD and it will be called again in ref-walk mode.
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index d529437ff44..64600b5d052 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -100,13 +100,13 @@ static void v9fs_dentry_release(struct dentry *dentry)
         }
 }
 
-static int v9fs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct p9_fid *fid;
         struct inode *inode;
         struct v9fs_inode *v9inode;
 
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         inode = dentry->d_inode;
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index e22dc4b4a50..65c54ab0473 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -23,7 +23,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
                                  struct nameidata *nd);
 static int afs_dir_open(struct inode *inode, struct file *file);
 static int afs_readdir(struct file *file, void *dirent, filldir_t filldir);
-static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd);
+static int afs_d_revalidate(struct dentry *dentry, unsigned int flags);
 static int afs_d_delete(const struct dentry *dentry);
 static void afs_d_release(struct dentry *dentry);
 static int afs_lookup_filldir(void *_cookie, const char *name, int nlen,
@@ -598,7 +598,7 @@ success:
  * - NOTE! the hit can be a negative hit too, so we can't assume we have an
  *   inode
  */
-static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct afs_vnode *vnode, *dir;
         struct afs_fid uninitialized_var(fid);
@@ -607,7 +607,7 @@ static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
         void *dir_version;
         int ret;
 
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         vnode = AFS_FS_I(dentry->d_inode);
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index d42eee1c5de..8898eef8bca 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1042,12 +1042,12 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry)
 /*
  * Check if cached dentry can be trusted.
  */
-static int ceph_d_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
         int valid = 0;
         struct inode *dir;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         dout("d_revalidate %p '%.*s' inode %p offset %lld\n", dentry,
@@ -1094,7 +1094,7 @@ static void ceph_d_release(struct dentry *dentry)
 }
 
 static int ceph_snapdir_d_revalidate(struct dentry *dentry,
-                                          struct nameidata *nd)
+                                          unsigned int flags)
 {
         /*
          * Eventually, we'll want to revalidate snapped metadata
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index e8c53c80dbd..b97ff48b7df 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -700,9 +700,9 @@ lookup_out:
 }
 
 static int
-cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
+cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
 {
-        if (nd && (nd->flags & LOOKUP_RCU))
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         if (direntry->d_inode) {
@@ -731,7 +731,7 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
          * This may be nfsd (or something), anyway, we can't see the
          * intent of this. So, since this can be for creation, drop it.
          */
-        if (!nd)
+        if (!flags)
                 return 0;
 
         /*
@@ -739,7 +739,7 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
          * case sensitive name which is specified by user if this is
          * for creation.
          */
-        if (nd->flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
+        if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
                 return 0;
 
         if (time_after(jiffies, direntry->d_time + HZ) || !lookupCacheEnabled)
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 17751582906..7f8f1a7c6d8 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -46,7 +46,7 @@ static int coda_rename(struct inode *old_inode, struct dentry *old_dentry,
 static int coda_readdir(struct file *file, void *buf, filldir_t filldir);
 
 /* dentry ops */
-static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd);
+static int coda_dentry_revalidate(struct dentry *de, unsigned int flags);
 static int coda_dentry_delete(const struct dentry *);
 
 /* support routines */
@@ -536,12 +536,12 @@ out:
 }
 
 /* called when a cache lookup succeeds */
-static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd)
+static int coda_dentry_revalidate(struct dentry *de, unsigned int flags)
 {
         struct inode *inode;
         struct coda_inode_info *cii;
 
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         inode = de->d_inode;
diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c
index 534c1d46e69..1b5d9af937d 100644
--- a/fs/ecryptfs/dentry.c
+++ b/fs/ecryptfs/dentry.c
@@ -32,7 +32,7 @@
 /**
  * ecryptfs_d_revalidate - revalidate an ecryptfs dentry
  * @dentry: The ecryptfs dentry
- * @nd: The associated nameidata
+ * @flags: lookup flags
  *
  * Called when the VFS needs to revalidate a dentry. This
  * is called whenever a name lookup finds a dentry in the
@@ -42,32 +42,20 @@
  * Returns 1 if valid, 0 otherwise.
  *
  */
-static int ecryptfs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int ecryptfs_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct dentry *lower_dentry;
         struct vfsmount *lower_mnt;
-        struct dentry *dentry_save = NULL;
-        struct vfsmount *vfsmount_save = NULL;
         int rc = 1;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         lower_dentry = ecryptfs_dentry_to_lower(dentry);
         lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
         if (!lower_dentry->d_op || !lower_dentry->d_op->d_revalidate)
                 goto out;
-        if (nd) {
-                dentry_save = nd->path.dentry;
-                vfsmount_save = nd->path.mnt;
-                nd->path.dentry = lower_dentry;
-                nd->path.mnt = lower_mnt;
-        }
-        rc = lower_dentry->d_op->d_revalidate(lower_dentry, nd);
-        if (nd) {
-                nd->path.dentry = dentry_save;
-                nd->path.mnt = vfsmount_save;
-        }
+        rc = lower_dentry->d_op->d_revalidate(lower_dentry, flags);
         if (dentry->d_inode) {
                 struct inode *lower_inode =
                         ecryptfs_inode_to_lower(dentry->d_inode);
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 98ae804f527..0bbdf399006 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -41,9 +41,9 @@ static int vfat_revalidate_shortname(struct dentry *dentry)
         return ret;
 }
 
-static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int vfat_revalidate(struct dentry *dentry, unsigned int flags)
 {
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         /* This is not negative dentry. Always valid. */
@@ -52,9 +52,9 @@ static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
         return vfat_revalidate_shortname(dentry);
 }
 
-static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
+static int vfat_revalidate_ci(struct dentry *dentry, unsigned int flags)
 {
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         /*
@@ -74,7 +74,7 @@ static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
          * This may be nfsd (or something), anyway, we can't see the
          * intent of this. So, since this can be for creation, drop it.
          */
-        if (!nd)
+        if (!flags)
                 return 0;
 
         /*
@@ -82,7 +82,7 @@ static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
          * case sensitive name which is specified by user if this is
          * for creation.
          */
-        if (nd->flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
+        if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
                 return 0;
 
         return vfat_revalidate_shortname(dentry);
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index ccdab3ac422..eba30bd9ba2 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -154,7 +154,7 @@ u64 fuse_get_attr_version(struct fuse_conn *fc)
  * the lookup once more.  If the lookup results in the same inode,
  * then refresh the attributes, timeouts and mark the dentry valid.
  */
-static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
+static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
 {
         struct inode *inode;
 
@@ -174,7 +174,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
                 if (!inode)
                         return 0;
 
-                if (nd && (nd->flags & LOOKUP_RCU))
+                if (flags & LOOKUP_RCU)
                         return -ECHILD;
 
                 fc = get_fuse_conn(inode);
diff --git a/fs/gfs2/dentry.c b/fs/gfs2/dentry.c
index 0da8da2c991..4fddb3c22d2 100644
--- a/fs/gfs2/dentry.c
+++ b/fs/gfs2/dentry.c
@@ -25,7 +25,7 @@
 /**
  * gfs2_drevalidate - Check directory lookup consistency
  * @dentry: the mapping to check
- * @nd:
+ * @flags: lookup flags
  *
  * Check to make sure the lookup necessary to arrive at this inode from its
  * parent is still good.
@@ -33,7 +33,7 @@
  * Returns: 1 if the dentry is ok, 0 if it isn't
  */
 
-static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
+static int gfs2_drevalidate(struct dentry *dentry, unsigned int flags)
 {
         struct dentry *parent;
         struct gfs2_sbd *sdp;
@@ -44,7 +44,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
         int error;
         int had_lock = 0;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         parent = dget_parent(dentry);
diff --git a/fs/hfs/sysdep.c b/fs/hfs/sysdep.c
index 19cf291eb91..91b91fd3a90 100644
--- a/fs/hfs/sysdep.c
+++ b/fs/hfs/sysdep.c
@@ -13,12 +13,12 @@
 
 /* dentry case-handling: just lowercase everything */
 
-static int hfs_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
+static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags)
 {
         struct inode *inode;
         int diff;
 
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         inode = dentry->d_inode;
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 07c91ca6017..f37977fb087 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1570,7 +1570,7 @@ out:
         return result;
 }
 
-static int jfs_ci_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int jfs_ci_revalidate(struct dentry *dentry, unsigned int flags)
 {
         /*
          * This is not negative dentry. Always valid.
@@ -1589,7 +1589,7 @@ static int jfs_ci_revalidate(struct dentry *dentry, struct nameidata *nd)
          * This may be nfsd (or something), anyway, we can't see the
          * intent of this. So, since this can be for creation, drop it.
          */
-        if (!nd)
+        if (!flags)
                 return 0;
 
         /*
@@ -1597,7 +1597,7 @@ static int jfs_ci_revalidate(struct dentry *dentry, struct nameidata *nd)
          * case sensitive name which is specified by user if this is
          * for creation.
          */
-        if (nd->flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
+        if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
                 return 0;
         return 1;
 }
diff --git a/fs/namei.c b/fs/namei.c
index 16256d915cb..1a5707aaed3 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -465,7 +465,7 @@ err_root:
 
 static inline int d_revalidate(struct dentry *dentry, struct nameidata *nd)
 {
-        return dentry->d_op->d_revalidate(dentry, nd);
+        return dentry->d_op->d_revalidate(dentry, nd ? nd->flags : 0);
 }
 
 /**
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index aeed93a6bde..32607f74958 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -72,7 +72,7 @@ const struct inode_operations ncp_dir_inode_operations =
 /*
  * Dentry operations routines
  */
-static int ncp_lookup_validate(struct dentry *, struct nameidata *);
+static int ncp_lookup_validate(struct dentry *, unsigned int);
 static int ncp_hash_dentry(const struct dentry *, const struct inode *,
                 struct qstr *);
 static int ncp_compare_dentry(const struct dentry *, const struct inode *,
@@ -290,7 +290,7 @@ leave_me:;
 
 
 static int
-ncp_lookup_validate(struct dentry *dentry, struct nameidata *nd)
+ncp_lookup_validate(struct dentry *dentry, unsigned int flags)
 {
         struct ncp_server *server;
         struct dentry *parent;
@@ -302,7 +302,7 @@ ncp_lookup_validate(struct dentry *dentry, struct nameidata *nd)
         if (dentry == dentry->d_sb->s_root)
                 return 1;
 
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         parent = dget_parent(dentry);
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 71a199435ca..656f52e9aa2 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1098,9 +1098,8 @@ int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry,
  * If the parent directory is seen to have changed, we throw out the
  * cached dentry and do a new lookup.
  */
-static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 {
-        unsigned int flags = nd->flags;
         struct inode *dir;
         struct inode *inode;
         struct dentry *parent;
@@ -1339,7 +1338,7 @@ out:
 }
 
 #ifdef CONFIG_NFS_V4
-static int nfs4_lookup_revalidate(struct dentry *, struct nameidata *);
+static int nfs4_lookup_revalidate(struct dentry *, unsigned int);
 
 const struct dentry_operations nfs4_dentry_operations = {
         .d_revalidate   = nfs4_lookup_revalidate,
@@ -1491,9 +1490,8 @@ no_open:
         return finish_no_open(file, res);
 }
 
-static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int nfs4_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 {
-        unsigned int flags = nd->flags;
         struct dentry *parent = NULL;
         struct inode *inode;
         struct inode *dir;
@@ -1537,7 +1535,7 @@ out:
 no_open_dput:
         dput(parent);
 no_open:
-        return nfs_lookup_revalidate(dentry, nd);
+        return nfs_lookup_revalidate(dentry, flags);
 }
 
 #endif /* CONFIG_NFSV4 */
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index af4488268e4..8db4b58b2e4 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -49,14 +49,13 @@ void ocfs2_dentry_attach_gen(struct dentry *dentry)
 }
 
 
-static int ocfs2_dentry_revalidate(struct dentry *dentry,
-                                   struct nameidata *nd)
+static int ocfs2_dentry_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct inode *inode;
         int ret = 0;    /* if all else fails, just return false */
         struct ocfs2_super *osb;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         inode = dentry->d_inode;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 437195f204e..bf749cca4cc 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1601,13 +1601,13 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
  * made this apply to all per process world readable and executable
  * directories.
  */
-int pid_revalidate(struct dentry *dentry, struct nameidata *nd)
+int pid_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct inode *inode;
         struct task_struct *task;
         const struct cred *cred;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         inode = dentry->d_inode;
@@ -1781,7 +1781,7 @@ static int proc_fd_link(struct dentry *dentry, struct path *path)
         return proc_fd_info(dentry->d_inode, path, NULL);
 }
 
-static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int tid_fd_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct inode *inode;
         struct task_struct *task;
@@ -1789,7 +1789,7 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
         struct files_struct *files;
         const struct cred *cred;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         inode = dentry->d_inode;
@@ -1868,7 +1868,7 @@ static struct dentry *proc_fd_instantiate(struct inode *dir,
         d_set_d_op(dentry, &tid_fd_dentry_operations);
         d_add(dentry, inode);
         /* Close the race of the process dying before we return the dentry */
-        if (tid_fd_revalidate(dentry, NULL))
+        if (tid_fd_revalidate(dentry, 0))
                 error = NULL;
 
  out:
@@ -2003,7 +2003,7 @@ static int dname_to_vma_addr(struct dentry *dentry,
         return 0;
 }
 
-static int map_files_d_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
         unsigned long vm_start, vm_end;
         bool exact_vma_exists = false;
@@ -2013,7 +2013,7 @@ static int map_files_d_revalidate(struct dentry *dentry, struct nameidata *nd)
         struct inode *inode;
         int status = 0;
 
-        if (nd && nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         if (!capable(CAP_SYS_ADMIN)) {
@@ -2371,7 +2371,7 @@ static struct dentry *proc_fdinfo_instantiate(struct inode *dir,
         d_set_d_op(dentry, &tid_fd_dentry_operations);
         d_add(dentry, inode);
         /* Close the race of the process dying before we return the dentry */
-        if (tid_fd_revalidate(dentry, NULL))
+        if (tid_fd_revalidate(dentry, 0))
                 error = NULL;
 
  out:
@@ -2430,7 +2430,7 @@ static struct dentry *proc_pident_instantiate(struct inode *dir,
         d_set_d_op(dentry, &pid_dentry_operations);
         d_add(dentry, inode);
         /* Close the race of the process dying before we return the dentry */
-        if (pid_revalidate(dentry, NULL))
+        if (pid_revalidate(dentry, 0))
                 error = NULL;
 out:
         return error;
@@ -3237,7 +3237,7 @@ static struct dentry *proc_pid_instantiate(struct inode *dir,
 
         d_add(dentry, inode);
         /* Close the race of the process dying before we return the dentry */
-        if (pid_revalidate(dentry, NULL))
+        if (pid_revalidate(dentry, 0))
                 error = NULL;
 out:
         return error;
@@ -3508,7 +3508,7 @@ static struct dentry *proc_task_instantiate(struct inode *dir,
 
         d_add(dentry, inode);
         /* Close the race of the process dying before we return the dentry */
-        if (pid_revalidate(dentry, NULL))
+        if (pid_revalidate(dentry, 0))
                 error = NULL;
 out:
         return error;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index eca4aca5b6e..e0c2a48dab7 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -142,7 +142,7 @@ typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
 int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
         const char *name, int len,
         instantiate_t instantiate, struct task_struct *task, const void *ptr);
-int pid_revalidate(struct dentry *dentry, struct nameidata *nd);
+int pid_revalidate(struct dentry *dentry, unsigned int flags);
 struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);
 extern const struct dentry_operations pid_dentry_operations;
 int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index 0d9e23a39e4..40ceb40f985 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -56,7 +56,7 @@ static struct dentry *proc_ns_instantiate(struct inode *dir,
         d_set_d_op(dentry, &pid_dentry_operations);
         d_add(dentry, inode);
         /* Close the race of the process dying before we return the dentry */
-        if (pid_revalidate(dentry, NULL))
+        if (pid_revalidate(dentry, 0))
                 error = NULL;
 out:
         return error;
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 3476bca8f7a..fda69fa3909 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -794,9 +794,9 @@ static const struct inode_operations proc_sys_dir_operations = {
         .getattr        = proc_sys_getattr,
 };
 
-static int proc_sys_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int proc_sys_revalidate(struct dentry *dentry, unsigned int flags)
 {
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
         return !PROC_I(dentry->d_inode)->sysctl->unregistering;
 }
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index 46fc1c20a6b..e6ad8d7dea6 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -942,7 +942,7 @@ int reiserfs_permission(struct inode *inode, int mask)
         return generic_permission(inode, mask);
 }
 
-static int xattr_hide_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int xattr_hide_revalidate(struct dentry *dentry, unsigned int flags)
 {
         return -EPERM;
 }
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index e6bb9b2a4cb..038e74b3af8 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -303,12 +303,12 @@ static int sysfs_dentry_delete(const struct dentry *dentry)
         return !!(sd->s_flags & SYSFS_FLAG_REMOVED);
 }
 
-static int sysfs_dentry_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
 {
         struct sysfs_dirent *sd;
         int is_dir;
 
-        if (nd->flags & LOOKUP_RCU)
+        if (flags & LOOKUP_RCU)
                 return -ECHILD;
 
         sd = dentry->d_fsdata;
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 8ca25551820..caa34e50537 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -144,7 +144,7 @@ enum dentry_d_lock_class
 };
 
 struct dentry_operations {
-        int (*d_revalidate)(struct dentry *, struct nameidata *);
+        int (*d_revalidate)(struct dentry *, unsigned int);
         int (*d_hash)(const struct dentry *, const struct inode *,
                         struct qstr *);
         int (*d_compare)(const struct dentry *, const struct inode *,