| From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
| From: Eric Biggers <ebiggers@google.com> |
| Date: Thu, 24 Oct 2019 14:43:37 -0700 |
| Subject: FROMLIST: f2fs: add support for IV_INO_LBLK_64 encryption policies |
| |
| f2fs inode numbers are stable across filesystem resizing, and f2fs inode |
| and file logical block numbers are always 32-bit. So f2fs can always |
| support IV_INO_LBLK_64 encryption policies. Wire up the needed |
| fscrypt_operations to declare support. |
| |
| Signed-off-by: Eric Biggers <ebiggers@google.com> |
| |
| Change-Id: I15c9b0f277df106701c4aacdf9456dbb3f8876a1 |
| Signed-off-by: Satya Tangirala <satyat@google.com> |
| Link: https://patchwork.kernel.org/patch/11210903/ |
| --- |
| fs/f2fs/super.c | 26 ++++++++++++++++++++------ |
| 1 file changed, 20 insertions(+), 6 deletions(-) |
| |
| diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c |
| index 1443cee15863..851ac9522926 100644 |
| --- a/fs/f2fs/super.c |
| +++ b/fs/f2fs/super.c |
| @@ -2308,13 +2308,27 @@ static bool f2fs_dummy_context(struct inode *inode) |
| return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode)); |
| } |
| |
| +static bool f2fs_has_stable_inodes(struct super_block *sb) |
| +{ |
| + return true; |
| +} |
| + |
| +static void f2fs_get_ino_and_lblk_bits(struct super_block *sb, |
| + int *ino_bits_ret, int *lblk_bits_ret) |
| +{ |
| + *ino_bits_ret = 8 * sizeof(nid_t); |
| + *lblk_bits_ret = 8 * sizeof(block_t); |
| +} |
| + |
| static const struct fscrypt_operations f2fs_cryptops = { |
| - .key_prefix = "f2fs:", |
| - .get_context = f2fs_get_context, |
| - .set_context = f2fs_set_context, |
| - .dummy_context = f2fs_dummy_context, |
| - .empty_dir = f2fs_empty_dir, |
| - .max_namelen = F2FS_NAME_LEN, |
| + .key_prefix = "f2fs:", |
| + .get_context = f2fs_get_context, |
| + .set_context = f2fs_set_context, |
| + .dummy_context = f2fs_dummy_context, |
| + .empty_dir = f2fs_empty_dir, |
| + .max_namelen = F2FS_NAME_LEN, |
| + .has_stable_inodes = f2fs_has_stable_inodes, |
| + .get_ino_and_lblk_bits = f2fs_get_ino_and_lblk_bits, |
| }; |
| #endif |
| |