patch-2.2.18 linux/fs/block_dev.c

• Lines: 88
• Date: Thu Sep 14 15:44:52 2000
• Orig file: v2.2.17/fs/block_dev.c
• Orig date: Fri Apr 21 12:46:41 2000

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/fs/block_dev.c linux/fs/block_dev.c
@@ -24,7 +24,7 @@
 	ssize_t block, blocks;
 	loff_t offset;
 	ssize_t chars;
-	ssize_t written = 0;
+	ssize_t written = 0, retval = 0;
 	struct buffer_head * bhlist[NBUF];
 	size_t size;
 	kdev_t dev;
@@ -54,8 +54,10 @@
 	else
 		size = INT_MAX;
 	while (count>0) {
-		if (block >= size)
-			return written ? written : -ENOSPC;
+		if (block >= size) {
+			retval = -ENOSPC;
+			goto cleanup;
+		}
 		chars = blocksize - offset;
 		if (chars > count)
 			chars=count;
@@ -67,15 +69,19 @@
 			if (chars != blocksize)
 				fn = bread;
 			bh = fn(dev, block, blocksize);
-			if (!bh)
-				return written ? written : -EIO;
+			if (!bh) {
+				retval = -EIO;
+				goto cleanup;
+			}
 			if (!buffer_uptodate(bh))
 				wait_on_buffer(bh);
 		}
 #else
 		bh = getblk(dev, block, blocksize);
-		if (!bh)
-			return written ? written : -EIO;
+		if (!bh) {
+			retval = -EIO;
+			goto cleanup;
+		}
 
 		if (!buffer_uptodate(bh))
 		{
@@ -99,7 +105,8 @@
 		        if (!bhlist[i])
 			{
 			  while(i >= 0) brelse(bhlist[i--]);
-			  return written ? written : -EIO;
+			  retval = -EIO;
+			  goto cleanup;
 		        }
 		      }
 		    }
@@ -108,7 +115,8 @@
 		    wait_on_buffer(bh);
 		    if (!buffer_uptodate(bh)) {
 			  brelse(bh);
-			  return written ? written : -EIO;
+			  retval = -EIO;
+			  goto cleanup;
 		    }
 		  };
 		};
@@ -141,6 +149,7 @@
 		if(write_error)
 			break;
 	}
+	cleanup:
 	if ( buffercount ){
 		ll_rw_block(WRITE, buffercount, bufferlist);
 		for(i=0; i<buffercount; i++){
@@ -150,10 +159,11 @@
 			brelse(bufferlist[i]);
 		}
 	}		
-	filp->f_reada = 1;
+	if(!retval)
+		filp->f_reada = 1;
 	if(write_error)
 		return -EIO;
-	return written;
+	return written ? written : retval;
 }
 
 ssize_t block_read(struct file * filp, char * buf, size_t count, loff_t *ppos)