From 24c32d733dd44dbc5b9dcd0b8de58e16fdbeac76 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 8 May 2007 00:23:49 -0700 Subject: [PATCH] mm: shrink parent dentries when shrinking slab Teach the dentry slab shrinker to aggressively shrink parent dentries when shrinking the dentry cache. This is done to attempt to improve the situation where the dentry slab cache gets a lot of internal fragmentation due to pages containing directory dentries. It is expected that this change will cause some of those dentries to be reaped earlier, and with less scanning. Needs careful testing. Cc: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/dcache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/dcache.c b/fs/dcache.c index 681cab81b454..268da2e2bc09 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -879,7 +879,7 @@ static int shrink_dcache_memory(int nr, gfp_t gfp_mask) if (nr) { if (!(gfp_mask & __GFP_FS)) return -1; - prune_dcache(nr, NULL, 0); + prune_dcache(nr, NULL, 1); } return (dentry_stat.nr_unused / 100) * sysctl_vfs_cache_pressure; } -- 2.20.1