commit e72e6497e74811e01d72b4c1b7537b3aea3ee857
author David Woodhouse <David.Woodhouse@intel.com> Thu Jun 03 08:09:12 2010 +0100
committer David Woodhouse <David.Woodhouse@intel.com> Thu Jun 03 08:22:04 2010 +0100
tree d78dec67d0aaeea807e5ab32141802620ec7ae41
parent f324e4cb2cadd9a42932c8a158e761ae31b88e72

jffs2: Fix NFS race by using insert_inode_locked()

New inodes need to be locked as we're creating them, so they don't get used
by other things (like NFSd) before they're ready.

Pointed out by Al Viro.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

fs/jffs2/dir.c

diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index cb7ef34..166062a 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -222,15 +222,18 @@
 	dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime));
 
 	jffs2_free_raw_inode(ri);
-	d_instantiate(dentry, inode);
 
 	D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
 		  inode->i_ino, inode->i_mode, inode->i_nlink,
 		  f->inocache->pino_nlink, inode->i_mapping->nrpages));
+
+	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 	return 0;
 
  fail:
 	make_bad_inode(inode);
+	unlock_new_inode(inode);
 	iput(inode);
 	jffs2_free_raw_inode(ri);
 	return ret;
@@ -447,10 +450,12 @@
 	jffs2_complete_reservation(c);
 
 	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 	return 0;
 
  fail:
 	make_bad_inode(inode);
+	unlock_new_inode(inode);
 	iput(inode);
 	return ret;
 }
@@ -592,10 +597,12 @@
 	jffs2_complete_reservation(c);
 
 	d_instantiate(dentry, inode);
+	unlock_new_inode(inode);
 	return 0;
 
  fail:
 	make_bad_inode(inode);
+	unlock_new_inode(inode);
 	iput(inode);
 	return ret;
 }
@@ -767,11 +774,12 @@
 	jffs2_complete_reservation(c);
 
 	d_instantiate(dentry, inode);
-
+	unlock_new_inode(inode);
 	return 0;
 
  fail:
 	make_bad_inode(inode);
+	unlock_new_inode(inode);
 	iput(inode);
 	return ret;
 }