ext4: Set the bio REQ_NOENCRYPT flag
Sets the REQ_NOENCRYPT flag for I/O requests that ext4 has already
encrypted. Lower layers such as dm-crypt can observe that flag to
avoid encrypting again if that's how the user configures the
environment.
Change-Id: I62a93e480a9f5788070446bd94694dfb9f83c277
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Git-repo: https://android.googlesource.com/kernel/common/
Git-commit: 7af2a1358e1577379c04d08b5c1d2ac4565c9418
[stummala@codeaurora.org: resolve merge conflicts]
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
diff --git a/fs/crypto/bio.c b/fs/crypto/bio.c
index c629e97..c74e9ac 100644
--- a/fs/crypto/bio.c
+++ b/fs/crypto/bio.c
@@ -131,7 +131,7 @@
bio->bi_bdev = inode->i_sb->s_bdev;
bio->bi_iter.bi_sector =
pblk << (inode->i_sb->s_blocksize_bits - 9);
- bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
+ bio_set_op_attrs(bio, REQ_OP_WRITE, REQ_NOENCRYPT);
ret = bio_add_page(bio, ciphertext_page,
inode->i_sb->s_blocksize, 0);
if (ret != inode->i_sb->s_blocksize) {