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From: Satya Tangirala <satyat@google.com>
To: "Theodore Y . Ts'o" <tytso@mit.edu>,
	Jaegeuk Kim <jaegeuk@kernel.org>,
	Eric Biggers <ebiggers@kernel.org>, Chao Yu <chao@kernel.org>,
	Jens Axboe <axboe@kernel.dk>,
	"Darrick J . Wong" <darrick.wong@oracle.com>
Cc: linux-kernel@vger.kernel.org, linux-fscrypt@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-xfs@vger.kernel.org, linux-block@vger.kernel.org,
	linux-ext4@vger.kernel.org, Eric Biggers <ebiggers@google.com>,
	Satya Tangirala <satyat@google.com>
Subject: [PATCH v9 6/9] iomap: support direct I/O with fscrypt using blk-crypto
Date: Fri,  4 Jun 2021 21:09:05 +0000	[thread overview]
Message-ID: <20210604210908.2105870-7-satyat@google.com> (raw)
In-Reply-To: <20210604210908.2105870-1-satyat@google.com>

From: Eric Biggers <ebiggers@google.com>

Set bio crypt contexts on bios by calling into fscrypt when required.
No DUN contiguity checks are done - callers are expected to set up the
iomap correctly to ensure that each bio submitted by iomap will not have
blocks with incontiguous DUNs by calling fscrypt_limit_io_blocks()
appropriately.

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/iomap/direct-io.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index 9398b8c31323..1c825deb36a9 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c
@@ -6,6 +6,7 @@
 #include <linux/module.h>
 #include <linux/compiler.h>
 #include <linux/fs.h>
+#include <linux/fscrypt.h>
 #include <linux/iomap.h>
 #include <linux/backing-dev.h>
 #include <linux/uio.h>
@@ -185,11 +186,14 @@ static void
 iomap_dio_zero(struct iomap_dio *dio, struct iomap *iomap, loff_t pos,
 		unsigned len)
 {
+	struct inode *inode = file_inode(dio->iocb->ki_filp);
 	struct page *page = ZERO_PAGE(0);
 	int flags = REQ_SYNC | REQ_IDLE;
 	struct bio *bio;
 
 	bio = bio_alloc(GFP_KERNEL, 1);
+	fscrypt_set_bio_crypt_ctx(bio, inode, pos >> inode->i_blkbits,
+				  GFP_KERNEL);
 	bio_set_dev(bio, iomap->bdev);
 	bio->bi_iter.bi_sector = iomap_sector(iomap, pos);
 	bio->bi_private = dio;
@@ -306,6 +310,8 @@ iomap_dio_bio_actor(struct inode *inode, loff_t pos, loff_t length,
 		}
 
 		bio = bio_alloc(GFP_KERNEL, nr_pages);
+		fscrypt_set_bio_crypt_ctx(bio, inode, pos >> inode->i_blkbits,
+					  GFP_KERNEL);
 		bio_set_dev(bio, iomap->bdev);
 		bio->bi_iter.bi_sector = iomap_sector(iomap, pos);
 		bio->bi_write_hint = dio->iocb->ki_hint;
-- 
2.32.0.rc1.229.g3e70b5a671-goog


  parent reply	other threads:[~2021-06-04 21:09 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-04 21:08 [PATCH v9 0/9] add support for " Satya Tangirala
2021-06-04 21:09 ` [PATCH v9 1/9] block: blk-crypto-fallback: handle data unit split across multiple bvecs Satya Tangirala
2021-06-04 21:09 ` [PATCH v9 2/9] block: blk-crypto: relax alignment requirements for bvecs in bios Satya Tangirala
2021-06-04 21:09 ` [PATCH v9 3/9] fscrypt: add functions for direct I/O support Satya Tangirala
2021-07-23 20:42   ` Eric Biggers
2021-06-04 21:09 ` [PATCH v9 4/9] direct-io: add support for fscrypt using blk-crypto Satya Tangirala
2021-06-04 21:09 ` [PATCH v9 5/9] block: Make bio_iov_iter_get_pages() respect bio_required_sector_alignment() Satya Tangirala
2021-06-04 22:51   ` kernel test robot
2021-06-05  2:55   ` kernel test robot
2021-07-23 21:33   ` Eric Biggers
2021-07-24  7:19     ` Christoph Hellwig
2021-06-04 21:09 ` Satya Tangirala [this message]
2021-07-22 19:04   ` [PATCH v9 6/9] iomap: support direct I/O with fscrypt using blk-crypto Darrick J. Wong
2021-06-04 21:09 ` [PATCH v9 7/9] ext4: " Satya Tangirala
2021-06-04 21:09 ` [PATCH v9 8/9] f2fs: " Satya Tangirala
2021-06-04 21:09 ` [PATCH v9 9/9] fscrypt: update documentation for direct I/O support Satya Tangirala
     [not found] ` <CAF2Aj3h-Gt3bOxH4wXB7aeQ3jVzR3TEqd3uLsh4T9Q=e6W6iqQ@mail.gmail.com>
2021-07-22 14:48   ` [PATCH v9 0/9] add support for direct I/O with fscrypt using blk-crypto Eric Biggers
2021-08-04  8:26     ` Lee Jones

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