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authorJaegeuk Kim <jaegeuk@kernel.org>2016-04-11 15:10:11 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2016-04-12 10:24:04 -0700
commitd7d75352890447b55c13a81df316a6894ff32ecf (patch)
tree8204d591641df8bf7c63ddf464fb9f3e2ab40944 /fs
parentbf16200689118d19de1b8d2a3c314fc21f5dc7bb (diff)
downloadlinux-d7d75352890447b55c13a81df316a6894ff32ecf.tar.bz2
fscrypto: use dget_parent() in fscrypt_d_revalidate()
This patch updates fscrypto along with the below ext4 crypto change. Fixes: 3d43bcfef5f0 ("ext4 crypto: use dget_parent() in ext4_d_revalidate()") Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/crypto/crypto.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index 7f5804537d30..58ae0ba91ca2 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -345,13 +345,17 @@ EXPORT_SYMBOL(fscrypt_zeroout_range);
*/
static int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags)
{
- struct inode *dir = d_inode(dentry->d_parent);
- struct fscrypt_info *ci = dir->i_crypt_info;
+ struct dentry *dir;
+ struct fscrypt_info *ci;
int dir_has_key, cached_with_key;
- if (!dir->i_sb->s_cop->is_encrypted(dir))
+ dir = dget_parent(dentry);
+ if (!d_inode(dir)->i_sb->s_cop->is_encrypted(d_inode(dir))) {
+ dput(dir);
return 0;
+ }
+ ci = d_inode(dir)->i_crypt_info;
if (ci && ci->ci_keyring_key &&
(ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
(1 << KEY_FLAG_REVOKED) |
@@ -363,6 +367,7 @@ static int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags)
cached_with_key = dentry->d_flags & DCACHE_ENCRYPTED_WITH_KEY;
spin_unlock(&dentry->d_lock);
dir_has_key = (ci != NULL);
+ dput(dir);
/*
* If the dentry was cached without the key, and it is a