diff mbox

[1/2] orangefs: Use d_time to avoid excessive lookups

Message ID 1467746029-4199-2-git-send-email-mkb@localhost.localdomain (mailing list archive)
State New, archived
Headers show

Commit Message

Martin Brandenburg July 5, 2016, 7:13 p.m. UTC 
From: Martin Brandenburg <martin@omnibond.com>

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
---
 fs/orangefs/dcache.c | 4 ++++
 fs/orangefs/namei.c  | 5 +++++
 2 files changed, 9 insertions(+)
diff mbox

Patch

diff --git a/fs/orangefs/dcache.c b/fs/orangefs/dcache.c
index 5dfc4f3..dcb55bb 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 5a60c50..5e32e0e 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",