From: Bob Liu <[email protected]>
To: [email protected]
Cc: [email protected], [email protected],
[email protected], [email protected],
[email protected], Bob Liu <[email protected]>
Subject: [PATCH 3/4] block_dev: support protect information passthrough
Date: Wed, 26 Feb 2020 16:37:18 +0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Support protect information passed from use sapce, on direct io
is considered now.
Signed-off-by: Bob Liu <[email protected]>
---
fs/block_dev.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 69bf2fb..10e3299 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -348,6 +348,13 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
loff_t pos = iocb->ki_pos;
blk_qc_t qc = BLK_QC_T_NONE;
int ret = 0;
+ struct iovec *pi_iov;
+
+ if (iocb->ki_flags & IOCB_USE_PI) {
+ ret = iter_slice_protect_info(iter, nr_pages, &pi_iov);
+ if (ret)
+ return -EINVAL;
+ }
if ((pos | iov_iter_alignment(iter)) &
(bdev_logical_block_size(bdev) - 1))
@@ -411,6 +418,16 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
polled = true;
}
+ /* Add protection information to bio */
+ if (iocb->ki_flags & IOCB_USE_PI) {
+ ret = bio_integrity_prep_from_iovec(bio, pi_iov);
+ if (ret) {
+ bio->bi_status = BLK_STS_IOERR;
+ bio_endio(bio);
+ break;
+ }
+ }
+
qc = submit_bio(bio);
if (polled)
--
2.9.5
next prev parent reply other threads:[~2020-02-26 8:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 8:37 [RFC PATCH 0/4] userspace PI passthrough via io_uring Bob Liu
2020-02-26 8:37 ` [PATCH 1/4] io_uring: add IORING_OP_READ{WRITE}V_PI cmd Bob Liu
2020-02-26 14:24 ` Jens Axboe
2020-02-26 15:57 ` Christoph Hellwig
2020-02-26 15:58 ` Jens Axboe
2020-02-26 16:03 ` Darrick J. Wong
2020-02-26 16:53 ` Christoph Hellwig
2020-02-27 9:19 ` Bob Liu
2020-02-27 9:05 ` Bob Liu
2020-02-26 8:37 ` [PATCH 2/4] bio-integrity: introduce two funcs handle protect information Bob Liu
2020-02-26 16:03 ` Darrick J. Wong
2020-02-27 9:23 ` Bob Liu
2020-02-26 8:37 ` Bob Liu [this message]
2020-02-26 16:04 ` [PATCH 3/4] block_dev: support protect information passthrough Darrick J. Wong
2020-02-26 8:37 ` [PATCH 4/4] liburing/test: add testcase for " Bob Liu
2020-02-26 14:25 ` [RFC PATCH 0/4] userspace PI passthrough via io_uring Jens Axboe
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