From: Martin Brandenburg <martin@omnibond.com>
Date: Mon, 8 Feb 2016 22:01:29 +0000 (-0500)
Subject: orangefs: Use d_time to avoid excessive lookups
X-Git-Tag: Ubuntu-5.2.0-15.16~8685^2~5
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=31b7c1ab4ed14d3aeb658e11a114860a64290fea;p=mirror_ubuntu-eoan-kernel.git

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 5dfc4f3cfe68..dcb55bbb0b69 100644
--- 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 7e8dfa97c44a..b37f80bf0bec 100644
--- 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",