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Commit b26d042d authored by Eric Biggers's avatar Eric Biggers Committed by Jaegeuk Kim
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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.

Acked-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
parent eaa72b60

fs/f2fs/super.c

+20 −6
Original line number Diff line number Diff line
@@ -2324,6 +2324,18 @@ 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,
@@ -2331,6 +2343,8 @@ static const struct fscrypt_operations f2fs_cryptops = { 
	.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