Re: [patch 09/10] Use struct path in fs_struct

Andreas Gruenbacher
2007-09-28T20:38:59Z

On Friday 28 September 2007 20:42, Christoph Hellwig wrote:
> __d_path should probably switch to taking a struct path * aswell.

Indeed, it now easily can. Here we go...

One less parameter to __d_path

All callers to __d_path pass the dentry and vfsmount of a struct
path to __d_path. Pass the struct path directly, instead.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>

Index: linux-2.6/fs/dcache.c
===================================================================
--- linux-2.6.orig/fs/dcache.c
+++ linux-2.6/fs/dcache.c
@@ -1781,9 +1781,8 @@ shouldnt_be_hashed:
*
* "buflen" should be positive. Caller holds the dcache_lock.
*/
-static char * __d_path( struct dentry *dentry, struct vfsmount *vfsmnt,
- struct dentry *root, struct vfsmount *rootmnt,
- char *buffer, int buflen)
+static char * __d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
+ struct path *root, char *buffer, int buflen)
{
char * end = buffer+buflen;
char * retval;
@@ -1808,7 +1807,7 @@ static char * __d_path( struct dentry *d
for (;;) {
struct dentry * parent;

- if (dentry == root && vfsmnt == rootmnt)
+ if (dentry == root->dentry && vfsmnt == root->mnt)
break;
if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
/* Global root? */
@@ -1870,7 +1869,7 @@ char * d_path(struct dentry *dentry, str
root = *path_get(&current->fs->root);
read_unlock(&current->fs->lock);
spin_lock(&dcache_lock);
- res = __d_path(dentry, vfsmnt, root.dentry, root.mnt, buf, buflen);
+ res = __d_path(dentry, vfsmnt, &root, buf, buflen);
spin_unlock(&dcache_lock);
path_put(&root);
return res;
@@ -1936,8 +1935,7 @@ asmlinkage long sys_getcwd(char __user *
unsigned long len;
char * cwd;

- cwd = __d_path(pwd.dentry, pwd.mnt, root.dentry, root.mnt,
- page, PAGE_SIZE);
+ cwd = __d_path(pwd.dentry, pwd.mnt, &root, page, PAGE_SIZE);
spin_unlock(&dcache_lock);

error = PTR_ERR(cwd);