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Message-Id: <20200724121143.1589121-6-satyat@google.com>
Date: Fri, 24 Jul 2020 12:11:41 +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>,
Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH v5 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>
Acked-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
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.rc0.142.g3c755180ce-goog
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