On 10/21, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> 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 INLINE_CRYPT_OPTIMIZED encryption policies. Wire up the needed
> fscrypt_operations to declare support.
>
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Acked-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> ---
> 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 1443cee158633..851ac95229263 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
>
> --
> 2.23.0.866.gb869b98d4c-goog
