[PATCH] Zone reclaim: proc override

[~andy/linux] / fs / dcache.c

diff --git a/fs/dcache.c b/fs/dcache.c
index 1536f15c4d4c785a1ad2d49a78d03c5c4bd0067c..86bdb93789c6629c60027fdba100e99aa2709610 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -94,7 +94,7 @@ static void d_free(struct dentry *dentry)
  * d_iput() operation if defined.
  * Called with dcache_lock and per dentry lock held, drops both.
  */
-static inline void dentry_iput(struct dentry * dentry)
+static void dentry_iput(struct dentry * dentry)
 {
        struct inode *inode = dentry->d_inode;
        if (inode) {
@@ -808,10 +808,14 @@ void d_instantiate(struct dentry *entry, struct inode * inode)
  *
  * Fill in inode information in the entry. On success, it returns NULL.
  * If an unhashed alias of "entry" already exists, then we return the
- * aliased dentry instead.
+ * aliased dentry instead and drop one reference to inode.
  *
  * Note that in order to avoid conflicts with rename() etc, the caller
  * had better be holding the parent directory semaphore.
+ *
+ * This also assumes that the inode count has been incremented
+ * (or otherwise set) by the caller to indicate that it is now
+ * in use by the dcache.
  */
 struct dentry *d_instantiate_unique(struct dentry *entry, struct inode *inode)
 {
@@ -838,6 +842,7 @@ struct dentry *d_instantiate_unique(struct dentry *entry, struct inode *inode)
                dget_locked(alias);
                spin_unlock(&dcache_lock);
                BUG_ON(!d_unhashed(alias));
+               iput(inode);
                return alias;
        }
        list_add(&entry->d_alias, &inode->i_dentry);