orangefs: Use d_time to avoid excessive lookups

Signed-off-by: Martin Brandenburg <martin@omnibond.com>

diff --git a/fs/orangefs/dcache.c b/fs/orangefs/dcache.c
index 5dfc4f3cfe68a2962bbfe03e13a940aae173c8ef..dcb55bbb0b691b568f484f84454b11bc1201a3a9 100644 (file)
--- a/fs/orangefs/dcache.c
+++ b/fs/orangefs/dcache.c
@@ -73,6 +73,7 @@ static int orangefs_revalidate_lookup(struct dentry *dentry)
                }
        }
 
+       dentry->d_time = jiffies + HZ;
        ret = 1;
 out_release_op:
        op_release(new_op);
@@ -94,6 +95,9 @@ static int orangefs_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
        int ret;
 
+       if (dentry->d_time > jiffies)
+               return 1;
+
        if (flags & LOOKUP_RCU)
                return -ECHILD;
 

diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c
index 7e8dfa97c44a4a2b2b9b6575cc8815b41fac1672..b37f80bf0bec375948d437daac3a39ef1e93c83d 100644 (file)
--- a/fs/orangefs/namei.c
+++ b/fs/orangefs/namei.c
@@ -72,6 +72,7 @@ static int orangefs_create(struct inode *dir,
 
        d_instantiate(dentry, inode);
        unlock_new_inode(inode);
+       dentry->d_time = jiffies + HZ;
 
        gossip_debug(GOSSIP_NAME_DEBUG,
                     "%s: dentry instantiated for %s\n",
@@ -181,6 +182,8 @@ static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
                goto out;
        }
 
+       dentry->d_time = jiffies + HZ;
+
        inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
        if (IS_ERR(inode)) {
                gossip_debug(GOSSIP_NAME_DEBUG,
@@ -316,6 +319,7 @@ static int orangefs_symlink(struct inode *dir,
 
        d_instantiate(dentry, inode);
        unlock_new_inode(inode);
+       dentry->d_time = jiffies + HZ;
 
        gossip_debug(GOSSIP_NAME_DEBUG,
                     "Inode (Symlink) %pU -> %s\n",
@@ -378,6 +382,7 @@ static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
 
        d_instantiate(dentry, inode);
        unlock_new_inode(inode);
+       dentry->d_time = jiffies + HZ;
 
        gossip_debug(GOSSIP_NAME_DEBUG,
                     "Inode (Directory) %pU -> %s\n",