This is a note to let you know that I've just added the patch titled
new helper: dentry_free()
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
new-helper-dentry_free.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b4f0354e968f5fabd39bc85b99fedae4a97589fe Mon Sep 17 00:00:00 2001
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Tue, 29 Apr 2014 23:40:14 -0400
Subject: new helper: dentry_free()
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
commit b4f0354e968f5fabd39bc85b99fedae4a97589fe upstream.
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@xxxxxxxxxxxxxxxxxx>
Cc: "Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/dcache.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -244,6 +244,15 @@ static void __d_free(struct rcu_head *he
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
@@ -511,11 +520,7 @@ relock:
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;
}
Patches currently in stable-queue which might be from viro@xxxxxxxxxxxxxxxxxx are
queue-3.14/new-helper-dentry_free.patch
queue-3.14/fold-try_prune_one_dentry.patch
queue-3.14/fold-d_kill-and-d_free.patch
queue-3.14/ipc-modify-message-queue-accounting-to-not-take-kernel-data-structures-into-account.patch
queue-3.14/sg_start_req-make-sure-that-there-s-not-too-many-elements-in-iovec.patch
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