PERFORCE change 189855 for review

[Zheng Liu]

http://p4web.freebsd.org/@@189855?ac=10

Change 189855 by lz at freebsd-dev on 2011/03/11 10:25:07

	       Check block map in runlen == 0.

Affected files ...

.. //depot/projects/soc2010/extfs/src/sys/fs/ext2fs/ext2_alloc.c#38 edit

Differences ...

==== //depot/projects/soc2010/extfs/src/sys/fs/ext2fs/ext2_alloc.c#38 (text+ko) ====

@@ -1345,6 +1345,13 @@
                 }
 
                 if (runlen == 0) {
+                        bit = ffs(bbp[loc]) - 1;
+                        runlen += bit;
+                        if (runlen >= len) {
+                                bno = loc * NBBY;
+                                goto gotit;
+                        }
+
                         bit = fls(bbp[loc]);
                         runlen = NBBY - bit;
                         runstart = loc * NBBY + bit;