Re: [BK][PATCH] Reiser4, will double Linux FS performance, pleaseapply

[Nikita Danilov]

Tomas Szepe writes:
 > Hi,
 > 
 > Another one: trying to build 2.5.45 off a reiser4 mountpoint, I get:
 > 
 > reiser4[pdflush(7)]: flush_scan_extent (fs/reiser4/flush.c:3127)[nikita-2732]:
 > WARNING: Flush raced against extent->tail
 > reiser4[pdflush(7)]: jnode_flush (fs/reiser4/flush.c:1024)[jmacd-16739]:
 > WARNING: flush failed: -11
 > jnode_flush failed with err = -11

Can you please try the following patch to the fs/reiser4/flush.c:
----------------------------------------------------------------------
--- /tmp/flush.c	Mon Nov  4 14:32:21 2002
+++ flush.c	Mon Nov  4 14:32:32 2002
@@ -3149,7 +3149,8 @@ flush_scan_extent(flush_scan * scan, int
 				   only. Will be removed. */
 				warning("nikita-2732", 
 					"Flush raced against extent->tail");
-				ret = -EAGAIN;
+				scan->stop = 1;
+				ret = 0;
 				goto exit;
 			}
 			assert("jmacd-1230", item_is_extent(&scan->parent_coord));
----------------------------------------------------------------------

 > reiser4[pdflush(7)]: flush_scan_extent (fs/reiser4/flush.c:3127)[nikita-2732]:
 > WARNING: Flush raced against extent->tail

[...]

 > WARNING: Too many iterations: 8192
 > reiser4[fixdep(841)]: traverse_tree (fs/reiser4/search.c:465)[nikita-1481]:
 > WARNING: Too many iterations: 16384
 > reiser4[fixdep(952)]: extent2tail (fs/reiser4/plugin/file/tail_conversion.c:476)[nikita-2282]:
 > WARNING: Partial conversion of 105116: 1 of 2
 > reiser4[cc1(957)]: extent2tail (fs/reiser4/plugin/file/tail_conversion.c:476)[nikita-2282]:
 > WARNING: Partial conversion of 105116: 0 of 2
 > [snip]
 > 
 > ... after which r4 crashes completely --
 > Starts to hog all cpu time and umount() never goes through.

Try to wait a bit more and check whether any more "WARNING: Too many
iterations" appear, OK?

 > 
 > T.

Nikita.