land b_smallfix 20040407_1414:

[fs/lustre-release.git] / lustre / include / linux / lustre_compat25.h

diff --git a/lustre/include/linux/lustre_compat25.h b/lustre/include/linux/lustre_compat25.h
index 4a4e3a0..120e996 100644 (file)
--- a/lustre/include/linux/lustre_compat25.h
+++ b/lustre/include/linux/lustre_compat25.h
@@ -52,7 +52,7 @@
 
 #define LTIME_S(time)                   (time.tv_sec)
 #define ll_path_lookup                  path_lookup
-#define ll_permission                   permission
+#define ll_permission(inode,mask,nd)    permission(inode,mask,nd)
 
 #define ll_pgcache_lock(mapping)          spin_lock(&mapping->page_lock)
 #define ll_pgcache_unlock(mapping)        spin_unlock(&mapping->page_lock)
@@ -111,7 +111,7 @@ static inline int cleanup_group_info(void)
 #else /* 2.4.. */
 
 #define ll_vfs_create(a,b,c,d)              vfs_create(a,b,c)
-#define ll_permission(a,b,c)                permission(a,b)
+#define ll_permission(inode,mask,nd)        permission(inode,mask)
 #define ILOOKUP(sb, ino, test, data)        ilookup4(sb, ino, test, data);
 #define DCACHE_DISCONNECTED                 DCACHE_NFSD_DISCONNECTED
 #define ll_dev_t                            int
@@ -144,15 +144,15 @@ static inline void clear_page_dirty(struct page *page)
 #define cpu_online(cpu)                 (cpu_online_map & (1<<cpu))
 #endif
 
-static inline int ll_path_lookup(const char *path, unsigned flags, 
-                              struct nameidata *nd)
+static inline int ll_path_lookup(const char *path, unsigned flags,
+                                 struct nameidata *nd)
 {
         int error = 0;
         if (path_init(path, flags, nd))
                 error = path_walk(path, nd);
         return error;
 }
-#define ll_permission(a,b,c)  permission(a,b)
+#define ll_permission(inode,mask,nd)    permission(inode,mask)
 typedef long sector_t;
 
 #define ll_pgcache_lock(mapping)        spin_lock(&pagecache_lock)
@@ -194,5 +194,42 @@ static inline int cleanup_group_info(void)
 
 #endif /* end of 2.4 compat macros */
 
+#ifdef HAVE_PAGE_LIST
+static inline int mapping_has_pages(struct address_space *mapping)
+{
+        int rc = 1;
+
+        ll_pgcache_lock(mapping);
+        if (list_empty(&mapping->dirty_pages) &&
+            list_empty(&mapping->clean_pages) &&
+            list_empty(&mapping->locked_pages)) {
+                rc = 0;
+        }
+        ll_pgcache_unlock(mapping);
+
+        return rc;
+}
+
+static inline int clear_page_dirty_for_io(struct page *page)
+{
+        struct address_space *mapping = page->mapping;
+
+        if (page->mapping && PageDirty(page)) {
+                ClearPageDirty(page);
+                ll_pgcache_lock(mapping);
+                list_del(&page->list);
+                list_add(&page->list, &mapping->locked_pages);
+                ll_pgcache_unlock(mapping);
+                return 1;
+        }
+        return 0;
+}
+#else
+static inline int mapping_has_pages(struct address_space *mapping)
+{
+        return mapping->nrpages > 0;
+}
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _COMPAT25_H */