From: Satya Tangirala via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>
To: linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-ext4@vger.kernel.org
Cc: linux-xfs@vger.kernel.org, Satya Tangirala <satyat@google.com>,
Eric Biggers <ebiggers@google.com>
Subject: [f2fs-dev] [PATCH v4 4/7] ext4: support direct I/O with fscrypt using blk-crypto
Date: Mon, 20 Jul 2020 23:37:36 +0000 [thread overview]
Message-ID: <20200720233739.824943-5-satyat@google.com> (raw)
In-Reply-To: <20200720233739.824943-1-satyat@google.com>
From: Eric Biggers <ebiggers@google.com>
Wire up ext4 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@google.com>
Co-developed-by: Satya Tangirala <satyat@google.com>
Signed-off-by: Satya Tangirala <satyat@google.com>
---
fs/ext4/file.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 2a01e31a032c..d534f72675d9 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -36,9 +36,11 @@
#include "acl.h"
#include "truncate.h"
-static bool ext4_dio_supported(struct inode *inode)
+static bool ext4_dio_supported(struct kiocb *iocb, struct iov_iter *iter)
{
- if (IS_ENABLED(CONFIG_FS_ENCRYPTION) && IS_ENCRYPTED(inode))
+ struct inode *inode = file_inode(iocb->ki_filp);
+
+ if (!fscrypt_dio_supported(iocb, iter))
return false;
if (fsverity_active(inode))
return false;
@@ -61,7 +63,7 @@ static ssize_t ext4_dio_read_iter(struct kiocb *iocb, struct iov_iter *to)
inode_lock_shared(inode);
}
- if (!ext4_dio_supported(inode)) {
+ if (!ext4_dio_supported(iocb, to)) {
inode_unlock_shared(inode);
/*
* Fallback to buffered I/O if the operation being performed on
@@ -490,7 +492,7 @@ static ssize_t ext4_dio_write_iter(struct kiocb *iocb, struct iov_iter *from)
}
/* Fallback to buffered I/O if the inode does not support direct I/O. */
- if (!ext4_dio_supported(inode)) {
+ if (!ext4_dio_supported(iocb, from)) {
if (ilock_shared)
inode_unlock_shared(inode);
else
--
2.28.0.rc0.105.gf9edc3c819-goog
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next prev parent reply other threads:[~2020-07-21 1:21 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 23:37 [f2fs-dev] [PATCH v4 0/7] add support for direct I/O with fscrypt using blk-crypto Satya Tangirala via Linux-f2fs-devel
2020-07-20 23:37 ` [f2fs-dev] [PATCH v4 1/7] fscrypt: Add functions for direct I/O support Satya Tangirala via Linux-f2fs-devel
2020-07-22 17:04 ` Jaegeuk Kim
2020-07-20 23:37 ` [f2fs-dev] [PATCH v4 2/7] direct-io: add support for fscrypt using blk-crypto Satya Tangirala via Linux-f2fs-devel
2020-07-22 17:05 ` Jaegeuk Kim
2020-07-20 23:37 ` [f2fs-dev] [PATCH v4 3/7] iomap: support direct I/O with " Satya Tangirala via Linux-f2fs-devel
2020-07-22 17:06 ` Jaegeuk Kim
2020-07-22 21:16 ` Dave Chinner
2020-07-22 22:34 ` Eric Biggers
2020-07-22 22:44 ` Matthew Wilcox
2020-07-22 23:12 ` Eric Biggers
2020-07-22 23:26 ` Eric Biggers
2020-07-22 23:32 ` Darrick J. Wong
2020-07-22 23:43 ` Eric Biggers
2020-07-23 22:07 ` Dave Chinner
2020-07-23 23:03 ` Eric Biggers
2020-07-24 1:39 ` Dave Chinner
2020-07-24 3:46 ` Eric Biggers
2020-07-24 5:31 ` Dave Chinner
2020-07-24 17:41 ` Eric Biggers
2020-07-25 23:47 ` Dave Chinner
2020-07-25 23:59 ` Dave Chinner
2020-07-26 2:42 ` Eric Biggers
2020-07-27 17:16 ` Eric Biggers
2020-07-20 23:37 ` Satya Tangirala via Linux-f2fs-devel [this message]
2020-07-22 17:07 ` [f2fs-dev] [PATCH v4 4/7] ext4: " Jaegeuk Kim
2020-07-20 23:37 ` [f2fs-dev] [PATCH v4 5/7] f2fs: " Satya Tangirala via Linux-f2fs-devel
2020-07-21 20:11 ` Jaegeuk Kim
2020-07-20 23:37 ` [f2fs-dev] [PATCH v4 6/7] fscrypt: document inline encryption support Satya Tangirala via Linux-f2fs-devel
2020-07-22 17:01 ` Jaegeuk Kim
2020-07-20 23:37 ` [f2fs-dev] [PATCH v4 7/7] fscrypt: update documentation for direct I/O support Satya Tangirala via Linux-f2fs-devel
2020-07-21 0:47 ` Eric Biggers
2020-07-22 16:57 ` Jaegeuk Kim
2020-07-21 0:56 ` [f2fs-dev] [PATCH v4 0/7] add support for direct I/O with fscrypt using blk-crypto Eric Biggers
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