constify dentry argument of dentry_path()/dentry_path_raw()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/d_path.c b/fs/d_path.c
index a69e2cd..270d621 100644 (file)
--- a/fs/d_path.c
+++ b/fs/d_path.c
@@ -326,9 +326,9 @@ char *simple_dname(struct dentry *dentry, char *buffer, int buflen)
 /*
  * Write full pathname from the root of the filesystem into the buffer.
  */
-static char *__dentry_path(struct dentry *d, char *buf, int buflen)
+static char *__dentry_path(const struct dentry *d, char *buf, int buflen)
 {
-       struct dentry *dentry;
+       const struct dentry *dentry;
        char *end, *retval;
        int len, seq = 0;
        int error = 0;
@@ -347,7 +347,7 @@ restart:
        *retval = '/';
        read_seqbegin_or_lock(&rename_lock, &seq);
        while (!IS_ROOT(dentry)) {
-               struct dentry *parent = dentry->d_parent;
+               const struct dentry *parent = dentry->d_parent;
 
                prefetch(parent);
                error = prepend_name(&end, &len, &dentry->d_name);
@@ -371,13 +371,13 @@ Elong:
        return ERR_PTR(-ENAMETOOLONG);
 }
 
-char *dentry_path_raw(struct dentry *dentry, char *buf, int buflen)
+char *dentry_path_raw(const struct dentry *dentry, char *buf, int buflen)
 {
        return __dentry_path(dentry, buf, buflen);
 }
 EXPORT_SYMBOL(dentry_path_raw);
 
-char *dentry_path(struct dentry *dentry, char *buf, int buflen)
+char *dentry_path(const struct dentry *dentry, char *buf, int buflen)
 {
        char *p = NULL;
        char *retval;

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index c1e4801..4ecde5d 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -300,8 +300,8 @@ char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
 extern char *__d_path(const struct path *, const struct path *, char *, int);
 extern char *d_absolute_path(const struct path *, char *, int);
 extern char *d_path(const struct path *, char *, int);
-extern char *dentry_path_raw(struct dentry *, char *, int);
-extern char *dentry_path(struct dentry *, char *, int);
+extern char *dentry_path_raw(const struct dentry *, char *, int);
+extern char *dentry_path(const struct dentry *, char *, int);
 
 /* Allocation counts.. */