[RFC PATCH v3 03/16] fscrypt: export fscrypt_d_revalidate

[Jeff Layton <jlayton@kernel.org>]

ceph already has its own d_revalidate op so we can't rely on fscrypt
using that directly. Export this symbol so filesystems can call it
from their own d_revalidate op.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/crypto/fname.c       | 3 ++-
 include/linux/fscrypt.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/crypto/fname.c b/fs/crypto/fname.c
index a1cb6c2c50c4..0d41eb4a5493 100644
--- a/fs/crypto/fname.c
+++ b/fs/crypto/fname.c
@@ -578,7 +578,7 @@ EXPORT_SYMBOL_GPL(fscrypt_fname_siphash);
  * Validate dentries in encrypted directories to make sure we aren't potentially
  * caching stale dentries after a key has been added.
  */
-static int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags)
+int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
 	struct dentry *dir;
 	int err;
@@ -617,6 +617,7 @@ static int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags)
 
 	return valid;
 }
+EXPORT_SYMBOL_GPL(fscrypt_d_revalidate);
 
 const struct dentry_operations fscrypt_d_ops = {
 	.d_revalidate = fscrypt_d_revalidate,
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index 95dddba3ed00..b547e1aabb00 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -204,6 +204,7 @@ int fscrypt_fname_disk_to_usr(const struct inode *inode,
 bool fscrypt_match_name(const struct fscrypt_name *fname,
 			const u8 *de_name, u32 de_name_len);
 u64 fscrypt_fname_siphash(const struct inode *dir, const struct qstr *name);
+int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags);
 
 /* bio.c */
 void fscrypt_decrypt_bio(struct bio *bio);
-- 
2.26.2