ecryptfs: redo dget,mntget on dentry_open failure
Thanks to Jeff Moyer for pointing this out.
If the RDWR dentry_open() in ecryptfs_init_persistent_file fails,
it will do a dput/mntput. Need to re-take references if we
retry as RDONLY.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Mike Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index a277754..e5580bc 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -138,11 +138,14 @@
inode_info->lower_file = dentry_open(lower_dentry,
lower_mnt,
(O_RDWR | O_LARGEFILE));
- if (IS_ERR(inode_info->lower_file))
+ if (IS_ERR(inode_info->lower_file)) {
+ dget(lower_dentry);
+ mntget(lower_mnt);
inode_info->lower_file = dentry_open(lower_dentry,
lower_mnt,
(O_RDONLY
| O_LARGEFILE));
+ }
if (IS_ERR(inode_info->lower_file)) {
printk(KERN_ERR "Error opening lower persistent file "
"for lower_dentry [0x%p] and lower_mnt [0x%p]\n",