[PATCH] knfsd: remove nfsd_versbits as intermediate storage for desired versions

[safe/jmp/linux-2.6] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5933861..1d79b8d 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1,6 +1,7 @@
 #ifndef _LINUX_BLKDEV_H
 #define _LINUX_BLKDEV_H
 
+#include <linux/sched.h>
 #include <linux/major.h>
 #include <linux/genhd.h>
 #include <linux/list.h>
@@ -16,6 +17,22 @@
 
 #include <asm/scatterlist.h>
 
+#ifdef CONFIG_LBD
+# include <asm/div64.h>
+# define sector_div(a, b) do_div(a, b)
+#else
+# define sector_div(n, b)( \
+{ \
+       int _res; \
+       _res = (n) % (b); \
+       (n) /= (b); \
+       _res; \
+} \
+)
+#endif
+
+#ifdef CONFIG_BLOCK
+
 struct scsi_ioctl_command;
 
 struct request_queue;
@@ -104,8 +121,7 @@ struct io_context {
 
 void put_io_context(struct io_context *ioc);
 void exit_io_context(void);
-struct io_context *current_io_context(gfp_t gfp_flags);
-struct io_context *get_io_context(gfp_t gfp_flags);
+struct io_context *get_io_context(gfp_t gfp_flags, int node);
 void copy_io_context(struct io_context **pdst, struct io_context **psrc);
 void swap_io_context(struct io_context **ioc1, struct io_context **ioc2);
 
@@ -181,6 +197,7 @@ enum rq_flag_bits {
        __REQ_ORDERED_COLOR,    /* is before or after barrier */
        __REQ_RW_SYNC,          /* request is sync (O_DIRECT) */
        __REQ_ALLOCED,          /* request came from our alloc pool */
+       __REQ_RW_META,          /* metadata io request */
        __REQ_NR_BITS,          /* stops here */
 };
 
@@ -201,6 +218,7 @@ enum rq_flag_bits {
 #define REQ_ORDERED_COLOR      (1 << __REQ_ORDERED_COLOR)
 #define REQ_RW_SYNC    (1 << __REQ_RW_SYNC)
 #define REQ_ALLOCED    (1 << __REQ_ALLOCED)
+#define REQ_RW_META    (1 << __REQ_RW_META)
 
 #define BLK_MAX_CDB    16
 
@@ -544,6 +562,7 @@ enum {
  * We regard a request as sync, if it's a READ or a SYNC write.
  */
 #define rq_is_sync(rq)         (rq_data_dir((rq)) == READ || (rq)->cmd_flags & REQ_RW_SYNC)
+#define rq_is_meta(rq)         ((rq)->cmd_flags & REQ_RW_META)
 
 static inline int blk_queue_full(struct request_queue *q, int rw)
 {
@@ -636,6 +655,7 @@ extern void blk_stop_queue(request_queue_t *q);
 extern void blk_sync_queue(struct request_queue *q);
 extern void __blk_stop_queue(request_queue_t *q);
 extern void blk_run_queue(request_queue_t *);
+extern void blk_start_queueing(request_queue_t *);
 extern void blk_queue_activity_fn(request_queue_t *, activity_fn *, void *);
 extern int blk_rq_map_user(request_queue_t *, struct request *, void __user *, unsigned int);
 extern int blk_rq_unmap_user(struct bio *, unsigned int);
@@ -815,24 +835,32 @@ struct work_struct;
 int kblockd_schedule_work(struct work_struct *work);
 void kblockd_flush(void);
 
-#ifdef CONFIG_LBD
-# include <asm/div64.h>
-# define sector_div(a, b) do_div(a, b)
-#else
-# define sector_div(n, b)( \
-{ \
-       int _res; \
-       _res = (n) % (b); \
-       (n) /= (b); \
-       _res; \
-} \
-)
-#endif 
-
 #define MODULE_ALIAS_BLOCKDEV(major,minor) \
        MODULE_ALIAS("block-major-" __stringify(major) "-" __stringify(minor))
 #define MODULE_ALIAS_BLOCKDEV_MAJOR(major) \
        MODULE_ALIAS("block-major-" __stringify(major) "-*")
 
 
+#else /* CONFIG_BLOCK */
+/*
+ * stubs for when the block layer is configured out
+ */
+#define buffer_heads_over_limit 0
+
+static inline long blk_congestion_wait(int rw, long timeout)
+{
+       return io_schedule_timeout(timeout);
+}
+
+static inline long nr_blockdev_pages(void)
+{
+       return 0;
+}
+
+static inline void exit_io_context(void)
+{
+}
+
+#endif /* CONFIG_BLOCK */
+
 #endif