Breaking the world for a little bit. If anyone is going to continue

working on this branch for the next few days I suggested you work
off of the 0.3.1 tag.  The following changes are fairly extensive
and are designed to make the SPL compatible with all kernels in
the range of 2.6.18-2.6.25.  There were 13 relevant API changes
between these releases and I have added the needed autoconf tests
to check for them.  However, this has not all been tested extensively.
I'll sort of the breakage on Fedora Core 9 and RHEL5 this week.

SPL_AC_TYPE_UINTPTR_T
SPL_AC_TYPE_KMEM_CACHE_T
SPL_AC_KMEM_CACHE_DESTROY_INT
SPL_AC_ATOMIC_PANIC_NOTIFIER
SPL_AC_3ARGS_INIT_WORK
SPL_AC_2ARGS_REGISTER_SYSCTL
SPL_AC_KMEM_CACHE_T
SPL_AC_KMEM_CACHE_CREATE_DTOR
SPL_AC_3ARG_KMEM_CACHE_CREATE_CTOR
SPL_AC_SET_SHRINKER
SPL_AC_PATH_IN_NAMEIDATA
SPL_AC_TASK_CURR
SPL_AC_CTL_UNNUMBERED



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@119 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

include/sys/kmem.h

@@ -41,6 +41,7 @@ extern "C" {
 #include <linux/rwsem.h>
 #include <linux/hash.h>
 #include <linux/ctype.h>
+#include <sys/types.h>
 #include <sys/debug.h>
 /*
  * Memory allocation interfaces
@@ -316,15 +317,6 @@ kmem_alloc_tryhard(size_t size, size_t *alloc_size, int kmflags)
 #define KMC_REAP_CHUNK                  256
 #define KMC_DEFAULT_SEEKS               DEFAULT_SEEKS
 
-/* Defined by linux slab.h
- * typedef struct kmem_cache_s kmem_cache_t;
- */
-
-/* No linux analog
- * extern int kmem_ready;
- * extern pgcnt_t kmem_reapahead;
- */
-
 #ifdef DEBUG_KMEM_UNIMPLEMENTED
 static __inline__ void kmem_init(void) {
 #error "kmem_init() not implemented"
@@ -380,6 +372,7 @@ __kmem_cache_create(char *name, size_t size, size_t align,
 
 extern int __kmem_cache_destroy(kmem_cache_t *cache);
 extern void *__kmem_cache_alloc(kmem_cache_t *cache, gfp_t flags);
+extern void __kmem_cache_free(kmem_cache_t *cache, void *obj);
 extern void __kmem_reap(void);
 
 int kmem_init(void);
@@ -389,7 +382,7 @@ void kmem_fini(void);
         __kmem_cache_create(name,size,align,ctor,dtor,rclm,priv,vmp,flags)
 #define kmem_cache_destroy(cache)       __kmem_cache_destroy(cache)
 #define kmem_cache_alloc(cache, flags)  __kmem_cache_alloc(cache, flags)
-#define kmem_cache_free(cache, ptr)     kmem_cache_free(cache, ptr)
+#define kmem_cache_free(cache, obj)     __kmem_cache_free(cache, obj)
 #define kmem_cache_reap_now(cache)      kmem_cache_shrink(cache)
 #define kmem_reap()                     __kmem_reap()
 

include/sys/proc.h

@@ -39,6 +39,15 @@
 #include <sys/kstat.h>
 #include <sys/debug.h>
 
+#ifdef CONFIG_SYSCTL
+#ifdef HAVE_2ARGS_REGISTER_SYSCTL
+#define spl_register_sysctl_table(t, a)	register_sysctl_table(t, a)
+#else
+#define spl_register_sysctl_table(t, a)	register_sysctl_table(t)
+#endif /* HAVE_2ARGS_REGISTER_SYSCTL */
+#define spl_unregister_sysctl_table(t)	unregister_sysctl_table(t)
+#endif /* CONFIG_SYSCTL */
+
 #ifdef DEBUG_KSTAT
 extern struct proc_dir_entry *proc_sys_spl_kstat;
 struct proc_dir_entry *proc_dir_entry_find(struct proc_dir_entry *root,

include/sys/sysmacros.h

@@ -197,6 +197,18 @@ extern int ddi_strtoul(const char *str, char **nptr,
 #define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
 #endif
 
+#ifdef HAVE_3ARGS_INIT_WORK
+
+#define spl_init_work(wq,cb,d)	INIT_WORK((wq), (void *)(cb), (void *)(d))
+#define spl_get_work_data(type,field,data)	(data)
+
+#else
+
+#define spl_init_work(wq,cb,d)	INIT_WORK((wq), (void *)(cb));
+#define spl_get_work_data(type,field,data)	container_of(data,type,field)
+
+#endif
+
 #ifdef  __cplusplus
 }
 #endif

include/sys/types.h

@@ -7,9 +7,17 @@ extern "C" {
 
 #include <linux/types.h>
 #include <sys/sysmacros.h>
+#include "spl_config.h"
+
+#ifndef HAVE_UINTPTR_T
+typedef unsigned long			uintptr_t;
+#endif
+
+#ifndef HAVE_KMEM_CACHE_T
+typedef struct kmem_cache		kmem_cache_t;
+#endif
 
 typedef enum { B_FALSE=0, B_TRUE=1 }	boolean_t;
-typedef unsigned long			uintptr_t;
 typedef unsigned long			intptr_t;
 typedef unsigned long			ulong_t;
 typedef unsigned int			uint_t;

include/sys/vnode.h

@@ -40,6 +40,7 @@ extern "C" {
 #include <linux/namei.h>
 #include <linux/file.h>
 #include <linux/fs.h>
+#include <linux/mount.h>
 #include <sys/kmem.h>
 #include <sys/mutex.h>
 #include <sys/types.h>
@@ -92,6 +93,14 @@ extern "C" {
 #define B_INVAL		0x01
 #define B_TRUNC		0x02
 
+#ifdef HAVE_PATH_IN_NAMEIDATA
+# define nd_dentry	path.dentry
+# define nd_mnt		path.mnt
+#else
+# define nd_dentry	dentry
+# define nd_mnt		mnt
+#endif
+
 typedef enum vtype {
 	VNON		= 0,
 	VREG		= 1,