1 /** 2 * @file compat.c 3 * This file is intended to be up-to-date with the last linux version and 4 * provide work-arounds for missing features in previous kernel version 5 * 6 * @remark Copyright 2002 OProfile authors 7 * @remark Read the file COPYING 8 * 9 * @author John Levon 10 * @author Philippe Elie 11 */ 12 13 #include "op_dcache.h" 14 #include <linux/ioport.h> 15 16 #ifdef NEED_2_2_DENTRIES 17 18 /* note - assumes you only test for NULL, and not 19 * actually care about the return value */ 20 void * compat_request_region(unsigned long start, unsigned long n, char const * name) 21 { 22 if (check_region(start, n) != 0) 23 return NULL; 24 request_region(start, n, name); 25 return (void *)1; 26 } 27 28 int wind_dentries_2_2(struct dentry * dentry) 29 { 30 struct dentry * root = current->fs->root; 31 32 if (dentry->d_parent != dentry && list_empty(&dentry->d_hash)) 33 return 0; 34 35 for (;;) { 36 struct dentry * parent; 37 38 if (dentry == root) 39 break; 40 41 dentry = dentry->d_covers; 42 parent = dentry->d_parent; 43 44 if (dentry == parent) 45 break; 46 47 push_dname(&dentry->d_name); 48 49 dentry = parent; 50 } 51 52 return 1; 53 } 54 55 /* called with note_lock held */ 56 uint do_path_hash_2_2(struct dentry * dentry) 57 { 58 /* BKL is already taken */ 59 60 return do_hash(dentry, 0, 0, 0); 61 } 62 63 #endif /* NEED_2_2_DENTRIES */ 64
