patch-2.2.13 linux/include/linux/fs.h

• Lines: 106
• Date: Tue Oct 19 17:14:02 1999
• Orig file: v2.2.12/linux/include/linux/fs.h
• Orig date: Tue Oct 19 17:10:39 1999

diff -u --recursive --new-file v2.2.12/linux/include/linux/fs.h linux/include/linux/fs.h
@@ -22,6 +22,7 @@
 #include <asm/atomic.h>
 #include <linux/bitops.h>
 #include <asm/cache.h>
+#include <linux/stddef.h>	/* just in case the #define NULL previously in here was needed */
 
 struct poll_table_struct;
 
@@ -65,10 +66,6 @@
 #define READA 2		/* read-ahead  - don't block if no resources */
 #define WRITEA 3	/* write-ahead - don't block if no resources */
 
-#ifndef NULL
-#define NULL ((void *) 0)
-#endif
-
 #define NIL_FILP	((struct file *)0)
 #define SEL_IN		1
 #define SEL_OUT		2
@@ -184,7 +181,6 @@
 #define BH_Lock		2	/* 1 if the buffer is locked */
 #define BH_Req		3	/* 0 if the buffer has been invalidated */
 #define BH_Protected	6	/* 1 if the buffer is protected */
-#define BH_LowPrio	7	/* 1 if the buffer is lowprio */
 
 /*
  * Try to keep the most commonly used fields in single cache lines (16
@@ -755,7 +751,6 @@
 extern void refile_buffer(struct buffer_head * buf);
 extern void set_writetime(struct buffer_head * buf, int flag);
 extern int try_to_free_buffers(struct page *);
-extern void cache_drop_behind(struct buffer_head *bh);
 
 extern int nr_buffers;
 extern int buffermem;
@@ -776,25 +771,6 @@
 	}
 }
 
-extern inline void mark_buffer_highprio(struct buffer_head * bh)
-{
-	clear_bit(BH_LowPrio, &bh->b_state);
-}
-
-extern inline void mark_buffer_lowprio(struct buffer_head * bh)
-{
-	/*
-	 * dirty buffers cannot be marked lowprio.
-	 */
-	if (!buffer_dirty(bh))
-		set_bit(BH_LowPrio, &bh->b_state);
-}
-
-static inline int buffer_lowprio(struct buffer_head * bh)
-{
-	return test_bit(BH_LowPrio, &bh->b_state);
-}
-
 extern inline void mark_buffer_dirty(struct buffer_head * bh, int flag)
 {
 	if (!test_and_set_bit(BH_Dirty, &bh->b_state)) {
@@ -802,23 +778,6 @@
 		if (bh->b_list != BUF_DIRTY)
 			refile_buffer(bh);
 	}
-	/*
-	 * if a buffer gets marked dirty then it has to lose
-	 * it's lowprio state.
-	 */
-	mark_buffer_highprio(bh);
-}
-
-extern inline void mark_buffer_dirty_lowprio(struct buffer_head * bh)
-{
-	if (!test_and_set_bit(BH_Dirty, &bh->b_state)) {
-		if (bh->b_list != BUF_DIRTY)
-			refile_buffer(bh);
-		/*
-		 * Mark it lowprio only if it was not dirty before!
-		 */
-		set_bit(BH_LowPrio, &bh->b_state);
-	}
 }
 
 extern int check_disk_change(kdev_t dev);
@@ -889,7 +848,6 @@
 extern struct buffer_head * find_buffer(kdev_t dev, int block, int size);
 extern void ll_rw_block(int, int, struct buffer_head * bh[]);
 extern int is_read_only(kdev_t);
-extern int is_device_idle(kdev_t);
 extern void __brelse(struct buffer_head *);
 extern inline void brelse(struct buffer_head *buf)
 {
@@ -905,12 +863,8 @@
 extern void set_blocksize(kdev_t dev, int size);
 extern unsigned int get_hardblocksize(kdev_t dev);
 extern struct buffer_head * bread(kdev_t dev, int block, int size);
-extern struct buffer_head * buffer_ready (kdev_t dev, int block, int size);
-extern void bread_ahead (kdev_t dev, int block, int size);
 extern struct buffer_head * breada(kdev_t dev,int block, int size, 
 				   unsigned int pos, unsigned int filesize);
-extern struct buffer_head * breada_blocks(kdev_t dev,int block,
-						int size, int blocks);
 
 extern int brw_page(int, struct page *, kdev_t, int [], int, int);