Imported reiserfsprogs-3.6.20

2012-10-11 11:32:09 -04:00
1 parent 0ed773997f
commit dac518d099
@@ -0,0 +1,44 @@
+/*
+ * Copyright 1996-2004 by Hans Reiser, licensing governed by 
+ * reiserfsprogs/README
+ */
+
+#ifndef REISERFS_BUFFER_H
+#define REISERFS_BUFFER_H
+
+#include "reiserfs/types.h"
+
+#define BH_Uptodate	0
+#define BH_Dirty	1
+#define BH_Lock		2
+#define BH_Do_not_flush 3
+
+#define reiserfs_buffer_uptodate(bh)	 misc_test_bit(BH_Uptodate, &(bh)->b_state)
+#define reiserfs_buffer_mkuptodate(bh,i) misc_set_bit(BH_Uptodate, &(bh)->b_state)
+
+#define reiserfs_buffer_isdirty(bh)	 misc_test_bit(BH_Dirty, &(bh)->b_state)
+#define reiserfs_buffer_isclean(bh)	 !misc_test_bit(BH_Dirty, &(bh)->b_state)
+#define reiserfs_buffer_mkdirty(bh)	 misc_set_bit(BH_Dirty, &(bh)->b_state)
+#define reiserfs_buffer_mkclean(bh)	 misc_clear_bit(BH_Dirty, &(bh)->b_state)
+
+#define reiserfs_buffer_noflush(bh)	 misc_test_bit(BH_Do_not_flush, &(bh)->b_state)
+#define reiserfs_buffer_mknoflush(bh)	 misc_set_bit(BH_Do_not_flush, &(bh)->b_state)
+#define reiserfs_buffer_clnoflush(bh)	 misc_clear_bit(BH_Do_not_flush, &(bh)->b_state)
+
+extern reiserfs_bh_t * reiserfs_buffer_open (int, unsigned long, unsigned long);
+extern reiserfs_bh_t * reiserfs_buffer_find (int, unsigned long, unsigned long);
+extern reiserfs_bh_t * reiserfs_buffer_read (int, unsigned long, unsigned long);
+
+extern int reiserfs_buffer_write (reiserfs_bh_t *);
+
+extern void reiserfs_buffer_close (reiserfs_bh_t *);
+
+extern void reiserfs_buffer_forget (reiserfs_bh_t *);
+
+extern void reiserfs_buffer_flush_all(int);
+
+extern void reiserfs_buffer_free_all (void);
+
+extern void reiserfs_buffer_invalidate_all (int);
+
+#endif