#ifndef _COMPAT25_H
#define _COMPAT25_H
-#include <linux/portals_compat25.h>
+#ifdef __KERNEL__
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-#define KDEVT_VAL(dev, val) dev.value = 0
-#else
-#define KDEVT_VAL(dev, val) dev = 0
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) && LINUX_VERSION_CODE < KERNEL_VERSION(2,5,69)
+#error sorry, lustre requires at least 2.5.69
#endif
+#include <linux/portals_compat25.h>
+
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-# define PGCACHE_WRLOCK(mapping) write_lock(&mapping->page_lock)
-# define PGCACHE_WRUNLOCK(mapping) write_unlock(&mapping->page_lock)
-#else
-# define PGCACHE_WRLOCK(mapping) spin_lock(&pagecache_lock)
-# define PGCACHE_WRUNLOCK(mapping) spin_unlock(&pagecache_lock)
-#endif
+/*
+ * OBD need working random driver, thus all our
+ * initialization routines must be called after device
+ * driver initialization
+ */
+#undef module_init
+#define module_init(a) late_initcall(a)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-# define filemap_fdatasync(mapping) filemap_fdatawrite(mapping)
-#endif
+/* XXX our code should be using the 2.6 calls, not the other way around */
+#define TryLockPage(page) TestSetPageLocked(page)
+#define filemap_fdatasync(mapping) filemap_fdatawrite(mapping)
+#define Page_Uptodate(page) PageUptodate(page)
+#define KDEVT_INIT(val) (val)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-# define TryLockPage(page) TestSetPageLocked(page)
-#endif
+#define LTIME_S(time) (time.tv_sec)
+#define ll_path_lookup path_lookup
+#define ll_permission permission
+#define ll_pgcache_lock(mapping) spin_lock(&mapping->page_lock)
+#define ll_pgcache_unlock(mapping) spin_unlock(&mapping->page_lock)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-# define Page_Uptodate(page) PageUptodate(page)
-#endif
+#define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-# define USERMODEHELPER(path, argv, envp) call_usermodehelper(path, argv, envp, 0)
-#else
-# define USERMODEHELPER(path, argv, envp) call_usermodehelper(path, argv, envp)
-#endif
+#define ll_dev_t dev_t
+#define kdev_t dev_t
+#define to_kdev_t(dev) (dev)
+#define kdev_t_to_nr(dev) (dev)
+#define val_to_kdev(dev) (dev)
+#define ILOOKUP(sb, ino, test, data) ilookup5(sb, ino, test, data);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-# define LL_CHECK_DIRTY(sb) do { }while(0)
-#else
-# define LL_CHECK_DIRTY(sb) ll_check_dirty(sb)
-#endif
+#include <linux/writeback.h>
+
+static inline void lustre_daemonize_helper(void)
+{
+ LASSERT(current->signal != NULL);
+ current->session = 1;
+ if (current->group_leader)
+ current->group_leader->__pgrp = 1;
+ else
+ CERROR("we aren't group leader\n");
+ current->tty = NULL;
+}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
#define rb_node_s rb_node
#define rb_root_s rb_root
typedef struct rb_root_s rb_root_t;
typedef struct rb_node_s rb_node_t;
+
+#define smp_num_cpus NR_CPUS
+
+#ifndef conditional_schedule
+#define conditional_schedule() cond_resched()
#endif
+#include <linux/proc_fs.h>
+
+#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 ILOOKUP(sb, ino, test, data) ilookup4(sb, ino, test, data);
+#define DCACHE_DISCONNECTED DCACHE_NFSD_DISCONNECTED
+#define ll_dev_t int
+
+static inline void clear_page_dirty(struct page *page)
+{
+ if (PageDirty(page))
+ ClearPageDirty(page);
+}
+
+/* 2.5 uses hlists for some things, like the d_hash. we'll treat them
+ * as 2.5 and let macros drop back.. */
+#ifndef HLIST_HEAD /* until we get a kernel newer than l28 */
+#define hlist_entry list_entry
+#define hlist_head list_head
+#define hlist_node list_head
+#define HLIST_HEAD LIST_HEAD
+#define INIT_HLIST_HEAD INIT_LIST_HEAD
+#define hlist_del_init list_del_init
+#define hlist_add_head list_add
+#define hlist_for_each_safe list_for_each_safe
+#endif
+#define KDEVT_INIT(val) (val)
+#define ext3_xattr_set_handle ext3_xattr_set
+#define extN_xattr_set_handle extN_xattr_set
+#define try_module_get __MOD_INC_USE_COUNT
+#define module_put __MOD_DEC_USE_COUNT
+#define LTIME_S(time) (time)
+#if !defined(CONFIG_RH_2_4_20) && !defined(cpu_online)
+#define cpu_online(cpu) (cpu_online_map & (1<<cpu))
+#endif
+
+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)
+typedef long sector_t;
+
+#define ll_pgcache_lock(mapping) spin_lock(&pagecache_lock)
+#define ll_pgcache_unlock(mapping) spin_unlock(&pagecache_lock)
+
+static inline void __d_drop(struct dentry *dentry)
+{
+ list_del(&dentry->d_hash);
+ INIT_LIST_HEAD(&dentry->d_hash);
+}
+
+static inline void lustre_daemonize_helper(void)
+{
+ current->session = 1;
+ current->pgrp = 1;
+ current->tty = NULL;
+}
+
+#ifndef conditional_schedule
+#define conditional_schedule() if (unlikely(need_resched())) schedule()
+#endif
+
+/* to find proc_dir_entry from inode. 2.6 has native one -bzzz */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23)
+#define PDE(ii) ((ii)->u.generic_ip)
+#endif
+
+#endif /* end of 2.4 compat macros */
+
+#endif /* __KERNEL__ */
#endif /* _COMPAT25_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff