Delete: fs/reiserfs/buffer2.c

fs/reiserfs/buffer2.c

-/*
- *  Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README  
- */
-
-#include <linux/config.h>
-#include <linux/time.h>
-#include <linux/reiserfs_fs.h>
-#include <linux/smp_lock.h>
-#include <linux/kernel_stat.h>
-#include <linux/buffer_head.h>
-
-/*
- *  wait_buffer_until_released
- *  reiserfs_bread
- */
-
-/* when we allocate a new block (get_new_buffer, get_empty_nodes) and
-   get buffer for it, it is possible that it is held by someone else
-   or even by this process. In this function we wait until all other
-   holders release buffer. To make sure, that current process does not
-   hold we did free all buffers in tree balance structure
-   (get_empty_nodes and get_nodes_for_preserving) or in path structure
-   only (get_new_buffer) just before calling this */
-void wait_buffer_until_released (const struct buffer_head * bh)
-{
-  int repeat_counter = 0;
-
-  /*
-   * FIXME! Temporary cludge until ReiserFS people tell what they
-   * actually are trying to protect against!
-   */
-  if (1)
-  	return;
-
-  while (atomic_read (&(bh->b_count)) > 1) {
-
-    if ( !(++repeat_counter % 30000000) ) {
-      reiserfs_warning ("vs-3050: wait_buffer_until_released: nobody releases buffer (%b). Still waiting (%d) %cJDIRTY %cJWAIT\n",
-			bh, repeat_counter, buffer_journaled(bh) ? ' ' : '!',
-			buffer_journal_dirty(bh) ? ' ' : '!');
-    }
-    blk_run_queues();
-    yield();
-  }
-  if (repeat_counter > 30000000) {
-    reiserfs_warning("vs-3051: done waiting, ignore vs-3050 messages for (%b)\n", bh) ;
-  }
-}
-
-/*
- * reiserfs_bread() reads a specified block and returns the buffer that contains
- * it. It returns NULL if the block was unreadable.
- */
-/* It first tries to find the block in cache, and if it cannot do so
-   then it creates a new buffer and schedules I/O to read the
-   block. */
-/* The function is NOT SCHEDULE-SAFE! */
-struct buffer_head  * reiserfs_bread (struct super_block *super, int n_block) 
-{
-    struct buffer_head  *result;
-    PROC_EXP( unsigned int ctx_switches = nr_context_switches() );
-
-    result = sb_bread(super, n_block);
-    PROC_INFO_INC( super, breads );
-    PROC_EXP( if( nr_context_switches() != ctx_switches )
-	      PROC_INFO_INC( super, bread_miss ) );
-    return result;
-}
-