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authorNick Piggin <npiggin@kernel.dk>2011-01-07 09:49:50 +0300
committerNick Piggin <npiggin@kernel.dk>2011-01-07 09:50:26 +0300
commitff0c7d15f9787b7e8c601533c015295cc68329f8 (patch)
treee3db53950b8ed78e542ab35a3cd3a6eaee26eccd /net/socket.c
parentfa0d7e3de6d6fc5004ad9dea0dd6b286af8f03e9 (diff)
downloadlinux-ff0c7d15f9787b7e8c601533c015295cc68329f8.tar.xz
fs: avoid inode RCU freeing for pseudo fs
Pseudo filesystems that don't put inode on RCU list or reachable by rcu-walk dentries do not need to RCU free their inodes. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/net/socket.c b/net/socket.c
index 97fff3a4e72f..817dc92e9ef8 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -262,20 +262,21 @@ static struct inode *sock_alloc_inode(struct super_block *sb)
}
-static void sock_free_rcu(struct rcu_head *head)
+
+static void wq_free_rcu(struct rcu_head *head)
{
- struct inode *inode = container_of(head, struct inode, i_rcu);
- struct socket_alloc *ei = container_of(inode, struct socket_alloc,
- vfs_inode);
+ struct socket_wq *wq = container_of(head, struct socket_wq, rcu);
- kfree(ei->socket.wq);
- INIT_LIST_HEAD(&inode->i_dentry);
- kmem_cache_free(sock_inode_cachep, ei);
+ kfree(wq);
}
static void sock_destroy_inode(struct inode *inode)
{
- call_rcu(&inode->i_rcu, sock_free_rcu);
+ struct socket_alloc *ei;
+
+ ei = container_of(inode, struct socket_alloc, vfs_inode);
+ call_rcu(&ei->socket.wq->rcu, wq_free_rcu);
+ kmem_cache_free(sock_inode_cachep, ei);
}
static void init_once(void *foo)