From: Kentaro Makita <k-makita@np.css.fujitsu.com>
Date: Sat, 26 Jul 2008 02:44:40 +0000 (-0700)
Subject: vfs: add cond_resched_lock while scanning dentry LRU lists
X-Git-Tag: v2.6.27-rc1~203
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=f3c6ba986ab4527b6dfacf9f3b9e40f72466a8b2;p=linux.git

vfs: add cond_resched_lock while scanning dentry LRU lists

Add cond_resched_lock(&dcache_lock) while scanning LRU lists on
superblocks in __shrink_dcache_sb()

Signed-off-by: Kentaro Makita <k-makita@np.css.fujitsu.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/dcache.c b/fs/dcache.c
index 3818d6ab76ca..f2584d22cb45 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -487,6 +487,7 @@ static void __shrink_dcache_sb(struct super_block *sb, int *count, int flags)
 				if (!cnt)
 					break;
 			}
+			cond_resched_lock(&dcache_lock);
 		}
 	}
 	while (!list_empty(&tmp)) {