Add the field and have the blockdev direct_IO() helpers set it.
This is in preparation for being able to poll for iocb completion.
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
fs/block_dev.c | 2 ++
include/linux/fs.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index d233a59ea364..8a2fed18e3fc 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -236,6 +236,7 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter,
bio.bi_opf |= REQ_HIPRI;
qc = submit_bio(&bio);
+ WRITE_ONCE(iocb->ki_blk_qc, qc);
for (;;) {
__set_current_state(TASK_UNINTERRUPTIBLE);
@@ -396,6 +397,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
bio->bi_opf |= REQ_HIPRI;
qc = submit_bio(bio);
+ WRITE_ONCE(iocb->ki_blk_qc, qc);
break;
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index c95c0807471f..032761d9b218 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -310,6 +310,7 @@ struct kiocb {
int ki_flags;
u16 ki_hint;
u16 ki_ioprio; /* See linux/ioprio.h */
+ u32 ki_blk_qc;
} __randomize_layout;
static inline bool is_sync_kiocb(struct kiocb *kiocb)
--
2.17.1
