This allows the use of encryption with btrfs. Since the extent
encryption interfaces are not currently defined, this is using the
normal inode encryption, and that is not the long-term plan. But it
allows verifying by test that the steps for inode encryption are correct
and pass fstests.
Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@xxxxxxxxxx>
---
fs/btrfs/extent_io.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 4de42b7ce796..2e13bb615fa6 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -715,6 +715,14 @@ static bool btrfs_bio_is_contig(struct btrfs_bio_ctrl *bio_ctrl,
struct bio_vec *bvec = bio_last_bvec_all(bio);
const sector_t sector = disk_bytenr >> SECTOR_SHIFT;
+ if (IS_ENABLED(CONFIG_FS_ENCRYPTION)) {
+ struct inode *inode = page->mapping->host;
+ u64 lblk = (page_offset(page) + pg_offset) / inode->i_sb->s_blocksize;
+
+ if (!fscrypt_mergeable_bio(bio, inode, lblk))
+ return false;
+ }
+
if (bio_ctrl->compress_type != BTRFS_COMPRESS_NONE) {
/*
* For compression, all IO should have its logical bytenr set
@@ -753,6 +761,9 @@ static void alloc_new_bio(struct btrfs_inode *inode,
bbio->file_offset = file_offset;
bio_ctrl->bbio = bbio;
bio_ctrl->len_to_oe_boundary = U32_MAX;
+ fscrypt_set_bio_crypt_ctx(&bbio->bio, &inode->vfs_inode,
+ file_offset >> fs_info->sectorsize_bits,
+ GFP_NOIO);
/* Limit data write bios to the ordered boundary. */
if (bio_ctrl->wbc) {
--
2.41.0
|