From b4f0354e968f5fabd39bc85b99fedae4a97589fe Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 29 Apr 2014 23:40:14 -0400
Subject: [PATCH] new helper: dentry_free()
The part of old d_free() that dealt with actual freeing of dentry.
Taken out of dentry_kill() into a separate function.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/dcache.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index a5540d4919545..dab7db10d6852 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -246,6 +246,15 @@ static void __d_free(struct rcu_head *head)
kmem_cache_free(dentry_cache, dentry);
}
+static void dentry_free(struct dentry *dentry)
+{
+ /* if dentry was never visible to RCU, immediate free is OK */
+ if (!(dentry->d_flags & DCACHE_RCUACCESS))
+ __d_free(&dentry->d_u.d_rcu);
+ else
+ call_rcu(&dentry->d_u.d_rcu, __d_free);
+}
+
/**
* dentry_rcuwalk_barrier - invalidate in-progress rcu-walk lookups
* @dentry: the target dentry
@@ -513,11 +522,7 @@ dentry_kill(struct dentry *dentry, int unlock_on_failure)
if (dentry->d_op && dentry->d_op->d_release)
dentry->d_op->d_release(dentry);
- /* if dentry was never visible to RCU, immediate free is OK */
- if (!(dentry->d_flags & DCACHE_RCUACCESS))
- __d_free(&dentry->d_u.d_rcu);
- else
- call_rcu(&dentry->d_u.d_rcu, __d_free);
+ dentry_free(dentry);
return parent;
}
--
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