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Date: Fri, 17 Jul 2020 01:35:16 +0000 From: Satya Tangirala <satyat@...gle.com> To: linux-fscrypt@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, linux-ext4@...r.kernel.org Cc: linux-xfs@...r.kernel.org, Eric Biggers <ebiggers@...gle.com>, Satya Tangirala <satyat@...gle.com> Subject: [PATCH v2 5/7] f2fs: support direct I/O with fscrypt using blk-crypto From: Eric Biggers <ebiggers@...gle.com> Wire up f2fs with fscrypt direct I/O support. direct I/O with fscrypt is only supported through blk-crypto (i.e. CONFIG_BLK_INLINE_ENCRYPTION must have been enabled, the 'inlinecrypt' mount option must have been specified, and either hardware inline encryption support must be present or CONFIG_BLK_INLINE_ENCYRPTION_FALLBACK must have been enabled). Further, direct I/O on encrypted files is only supported when I/O is aligned to the filesystem block size (which is *not* necessarily the same as the block device's block size). Signed-off-by: Eric Biggers <ebiggers@...gle.com> Co-developed-by: Satya Tangirala <satyat@...gle.com> Signed-off-by: Satya Tangirala <satyat@...gle.com> --- fs/f2fs/f2fs.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index b35a50f4953c..978130b5a195 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -4082,7 +4082,11 @@ static inline bool f2fs_force_buffered_io(struct inode *inode, struct f2fs_sb_info *sbi = F2FS_I_SB(inode); int rw = iov_iter_rw(iter); - if (f2fs_post_read_required(inode)) + if (!fscrypt_dio_supported(iocb, iter)) + return true; + if (fsverity_active(inode)) + return true; + if (f2fs_compressed_file(inode)) return true; if (f2fs_is_multi_device(sbi)) return true; -- 2.28.0.rc0.105.gf9edc3c819-goog
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