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Date: Mon, 21 Oct 2019 16:03:55 -0700 From: Eric Biggers <ebiggers@...nel.org> To: linux-fscrypt@...r.kernel.org Cc: linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, linux-fsdevel@...r.kernel.org, Satya Tangirala <satyat@...gle.com>, Paul Crowley <paulcrowley@...gle.com>, Paul Lawrence <paullawrence@...gle.com>, "Theodore Y . Ts'o" <tytso@....edu>, Jaegeuk Kim <jaegeuk@...nel.org> Subject: [PATCH 3/3] f2fs: add support for INLINE_CRYPT_OPTIMIZED encryption policies From: Eric Biggers <ebiggers@...gle.com> 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@...gle.com> --- 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
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