[RFC PATCH v3 01/16] vfs: export new_inode_pseudo

From: Jeff Layton <jlayton@kernel.org>
To: ceph-devel@vger.kernel.org, linux-fscrypt@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org
Subject: [RFC PATCH v3 01/16] vfs: export new_inode_pseudo
Date: Mon, 14 Sep 2020 15:16:52 -0400	[thread overview]
Message-ID: <20200914191707.380444-2-jlayton@kernel.org> (raw)
In-Reply-To: <20200914191707.380444-1-jlayton@kernel.org>

Ceph needs to be able to allocate inodes ahead of a create that might
involve a fscrypt-encrypted inode. new_inode() almost fits the bill,
but it puts the inode on the sb->s_inodes list and when we go to hash
it, that might be done again.

We could work around that by setting I_CREATING on the new inode, but
that causes ilookup5 to return -ESTALE if something tries to find it
before I_NEW is cleared. To work around all of this, just use
new_inode_pseudo which doesn't add it to the list.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/inode.c b/fs/inode.c
index 72c4c347afb7..61554c2477ab 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -935,6 +935,7 @@ struct inode *new_inode_pseudo(struct super_block *sb)
 	}
 	return inode;
 }
+EXPORT_SYMBOL(new_inode_pseudo);
 
 /**
  *	new_inode 	- obtain an inode
-- 
2.26.2

