From 31b7c1ab4ed14d3aeb658e11a114860a64290fea Mon Sep 17 00:00:00 2001 From: Martin Brandenburg Date: Mon, 8 Feb 2016 17:01:29 -0500 Subject: [PATCH] orangefs: Use d_time to avoid excessive lookups Signed-off-by: Martin Brandenburg --- fs/orangefs/dcache.c | 4 ++++ fs/orangefs/namei.c | 5 +++++ 2 files changed, 9 insertions(+) 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", -- 2.20.1