[PATCH 3/3] ensure unique i_ino in filesystems without permanent inode numbers (pipefs)

[PATCH 3/3] ensure unique i_ino in filesystems without permanent inode numbers (pipefs)

[Jeff Layton]

pipefs is a rather busy filesystem and so is a good place to start to make
sure we flush out any performance problems

Signed-off-by: Jeff Layton <jlayton@redhat.com>

diff --git a/fs/pipe.c b/fs/pipe.c
index b1626f2..d74ae65 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -845,6 +845,9 @@ static struct inode * get_pipe_inode(voi
  	if (!inode)
  		goto fail_inode;

+	if (iunique_register(inode, 0))
+		goto fail_iput;
+
  	pipe = alloc_pipe_info(inode);
  	if (!pipe)
  		goto fail_iput;

Re: [PATCH 3/3] ensure unique i_ino in filesystems without permanent inode numbers (pipefs)

[Jeff Layton]

Jeff Layton wrote:
 > pipefs is a rather busy filesystem and so is a good place to start to make
 > sure we flush out any performance problems
 >

This patch changes the earlier patch to use the new_registered_inode wrapper
and that simplifies things a bit. It also goes ahead and changes over sockfs
in the same way.

Signed-off-by: Jeff Layton <jlayton@redhat.com>

diff --git a/fs/pipe.c b/fs/pipe.c
index f8b6bdc..4d30f49 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -846,7 +846,7 @@ static struct dentry_operations pipefs_d

  static struct inode * get_pipe_inode(void)
  {
-	struct inode *inode = new_inode(pipe_mnt->mnt_sb);
+	struct inode *inode = new_registered_inode(pipe_mnt->mnt_sb, 0);
  	struct pipe_inode_info *pipe;

  	if (!inode)
diff --git a/net/socket.c b/net/socket.c
index 4e39631..ec63a96 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -486,7 +486,7 @@ static struct socket *sock_alloc(void)
  	struct inode *inode;
  	struct socket *sock;

-	inode = new_inode(sock_mnt->mnt_sb);
+	inode = new_registered_inode(sock_mnt->mnt_sb, 0);
  	if (!inode)
  		return NULL;