Re: [PATCH] Per-superblock unused dentry LRU lists.
- From: "Randy.Dunlap" <rdunlap@xxxxxxxxxxxx>
- Date: Tue, 23 May 2006 18:44:07 -0700
On Wed, 24 May 2006 11:24:12 +1000 David Chinner wrote:
Index: 2.6.x-xfs-new/fs/dcache.c
===================================================================
--- 2.6.x-xfs-new.orig/fs/dcache.c 2006-05-15 16:24:44.212207654 +1000
+++ 2.6.x-xfs-new/fs/dcache.c 2006-05-16 14:00:46.327462206 +1000
@@ -114,6 +113,38 @@ static void dentry_iput(struct dentry *
}
}
+static void
+dentry_lru_add(struct dentry *dentry)
+{
+ list_add(&dentry->d_lru, &dentry->d_sb->s_dentry_lru);
+ dentry_stat.nr_unused++;
+}
+
+static void
+dentry_lru_add_tail(struct dentry *dentry)
+{
+ list_add_tail(&dentry->d_lru, &dentry->d_sb->s_dentry_lru);
+ dentry_stat.nr_unused++;
+}
+
+static void
+dentry_lru_del(struct dentry *dentry)
+{
+ if (!list_empty(&dentry->d_lru)) {
+ list_del(&dentry->d_lru);
+ dentry_stat.nr_unused--;
+ }
+}
+
+static void
+dentry_lru_del_init(struct dentry *dentry)
+{
+ if (likely(!list_empty(&dentry->d_lru))) {
+ list_del_init(&dentry->d_lru);
+ dentry_stat.nr_unused--;
+ }
+}
+
/*
* This is dput
*
Please use regular kernel coding style for functions:
don't put qualifiers and names on separate lines.
@@ -377,6 +399,48 @@ static inline void prune_one_dentry(stru
spin_lock(&dcache_lock);
}
+/*
+ * Shrink the dentry LRU on æ given superblock.
on ? given superblock ?
+ */
+static void
+__shrink_dcache_sb(struct super_block *sb, int *count, int flags)
+{
---
~Randy
-
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