[PATCH] Reduce sched latency in shrink_dcache_sb()
Kirill Korotaev [Sat, 25 Mar 2006 11:07:45 +0000 (03:07 -0800)]
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>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/dcache.c

index 0f7ec12..9395846 100644 (file)
@@ -489,6 +489,7 @@ repeat:
                        continue;
                }
                prune_one_dentry(dentry);
+               cond_resched_lock(&dcache_lock);
                goto repeat;
        }
        spin_unlock(&dcache_lock);