From: Kirill Korotaev <dev@openvz.org>

This patch reduces scheduling latency in shrink_dcache_sb() noticed during
remounting of big partitions with many cached dentries.  The same latency
fix was applied to select_parent() long ago.

Signed-off-by: Denis Lunev <den@sw.ru>
Signed-off-by: Pavel Emelianov <xemul@sw.ru>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 fs/dcache.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN fs/dcache.c~reduce-sched-latency-in-shrink_dcache_sb fs/dcache.c
--- devel/fs/dcache.c~reduce-sched-latency-in-shrink_dcache_sb	2006-03-09 20:18:09.000000000 -0800
+++ devel-akpm/fs/dcache.c	2006-03-09 20:18:09.000000000 -0800
@@ -489,6 +489,7 @@ repeat:
 			continue;
 		}
 		prune_one_dentry(dentry);
+		cond_resched_lock(&dcache_lock);
 		goto repeat;
 	}
 	spin_unlock(&dcache_lock);
_