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[RFC,32/62] procfs: switch to ->free_inode()

Message ID 20190416175340.21068-32-viro@ZenIV.linux.org.uk (mailing list archive)
State New, archived
Headers show
Series [RFC,01/62] securityfs: fix use-after-free on symlink traversal | expand

Commit Message

Al Viro April 16, 2019, 5:53 p.m. UTC 
From: Al Viro <viro@zeniv.linux.org.uk>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/proc/inode.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)
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Patch

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index fc7e38def174..5f8d215b3fd0 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -72,17 +72,11 @@  static struct inode *proc_alloc_inode(struct super_block *sb)
 	return &ei->vfs_inode;
 }
 
-static void proc_i_callback(struct rcu_head *head)
+static void proc_free_inode(struct inode *inode)
 {
-	struct inode *inode = container_of(head, struct inode, i_rcu);
 	kmem_cache_free(proc_inode_cachep, PROC_I(inode));
 }
 
-static void proc_destroy_inode(struct inode *inode)
-{
-	call_rcu(&inode->i_rcu, proc_i_callback);
-}
-
 static void init_once(void *foo)
 {
 	struct proc_inode *ei = (struct proc_inode *) foo;
@@ -123,7 +117,7 @@  static int proc_show_options(struct seq_file *seq, struct dentry *root)
 
 const struct super_operations proc_sops = {
 	.alloc_inode	= proc_alloc_inode,
-	.destroy_inode	= proc_destroy_inode,
+	.free_inode	= proc_free_inode,
 	.drop_inode	= generic_delete_inode,
 	.evict_inode	= proc_evict_inode,
 	.statfs		= simple_statfs,