From: Jens Axboe Date: Thu, 20 Jul 2023 17:47:56 +0000 (-0600) Subject: iomap: only set iocb->private for polled bio X-Git-Tag: v6.6.17~4147^2^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=daa99c5a3319e371029834092ee5f7c84bb43a70;p=platform%2Fkernel%2Flinux-rpi.git iomap: only set iocb->private for polled bio iocb->private is only used for polled IO, where the completer will find the bio to poll through that field. Assign it when we're submitting a polled bio, and get rid of the dio->poll_bio indirection. Reviewed-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Jens Axboe --- diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index 6b690fc..e4b9d91 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -41,7 +41,6 @@ struct iomap_dio { struct { struct iov_iter *iter; struct task_struct *waiter; - struct bio *poll_bio; } submit; /* used for aio completion: */ @@ -63,12 +62,14 @@ static struct bio *iomap_dio_alloc_bio(const struct iomap_iter *iter, static void iomap_dio_submit_bio(const struct iomap_iter *iter, struct iomap_dio *dio, struct bio *bio, loff_t pos) { + struct kiocb *iocb = dio->iocb; + atomic_inc(&dio->ref); /* Sync dio can't be polled reliably */ - if ((dio->iocb->ki_flags & IOCB_HIPRI) && !is_sync_kiocb(dio->iocb)) { - bio_set_polled(bio, dio->iocb); - dio->submit.poll_bio = bio; + if ((iocb->ki_flags & IOCB_HIPRI) && !is_sync_kiocb(iocb)) { + bio_set_polled(bio, iocb); + WRITE_ONCE(iocb->private, bio); } if (dio->dops && dio->dops->submit_io) @@ -184,7 +185,6 @@ void iomap_dio_bio_end_io(struct bio *bio) * more IO to be issued to finalise filesystem metadata changes or * guarantee data integrity. */ - WRITE_ONCE(iocb->private, NULL); INIT_WORK(&dio->aio.work, iomap_dio_complete_work); queue_work(file_inode(iocb->ki_filp)->i_sb->s_dio_done_wq, &dio->aio.work); @@ -523,7 +523,6 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, dio->submit.iter = iter; dio->submit.waiter = current; - dio->submit.poll_bio = NULL; if (iocb->ki_flags & IOCB_NOWAIT) iomi.flags |= IOMAP_NOWAIT; @@ -633,8 +632,6 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, if (dio->flags & IOMAP_DIO_WRITE_THROUGH) dio->flags &= ~IOMAP_DIO_NEED_SYNC; - WRITE_ONCE(iocb->private, dio->submit.poll_bio); - /* * We are about to drop our additional submission reference, which * might be the last reference to the dio. There are three different