diff mbox series

[-next,v3,3/7] md/raid1-10: factor out a helper to submit normal write

Message ID 20230529131106.2123367-4-yukuai1@huaweicloud.com
State New
Headers
Series limit the number of plugged bio |

Commit Message

Yu Kuai May 29, 2023, 1:11 p.m. UTC 
  From: Yu Kuai <yukuai3@huawei.com>

There are multiple places to do the same thing, factor out a helper to
prevent redundant code, and the helper will be used in following patch
as well.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
 drivers/md/raid1-10.c | 17 +++++++++++++++++
 drivers/md/raid1.c    | 13 ++-----------
 drivers/md/raid10.c   | 26 ++++----------------------
 3 files changed, 23 insertions(+), 33 deletions(-)

Comments

Xiao Ni May 31, 2023, 7:20 a.m. UTC | #1 
On Mon, May 29, 2023 at 9:14 PM Yu Kuai <yukuai1@huaweicloud.com> wrote:
>
> From: Yu Kuai <yukuai3@huawei.com>
>
> There are multiple places to do the same thing, factor out a helper to
> prevent redundant code, and the helper will be used in following patch
> as well.
>
> Signed-off-by: Yu Kuai <yukuai3@huawei.com>
> ---
>  drivers/md/raid1-10.c | 17 +++++++++++++++++
>  drivers/md/raid1.c    | 13 ++-----------
>  drivers/md/raid10.c   | 26 ++++----------------------
>  3 files changed, 23 insertions(+), 33 deletions(-)
>
> diff --git a/drivers/md/raid1-10.c b/drivers/md/raid1-10.c
> index 9bf19a3409ce..506299bd55cb 100644
> --- a/drivers/md/raid1-10.c
> +++ b/drivers/md/raid1-10.c
> @@ -110,6 +110,23 @@ static void md_bio_reset_resync_pages(struct bio *bio, struct resync_pages *rp,
>         } while (idx++ < RESYNC_PAGES && size > 0);
>  }
>
> +
> +static inline void raid1_submit_write(struct bio *bio)

Hi Kuai

Is it better to change the name to rdev_submit_write? It's just a
suggestion. The patch looks good to me.

Regards
Xiao

> +{
> +       struct md_rdev *rdev = (struct md_rdev *)bio->bi_bdev;
> +
> +       bio->bi_next = NULL;
> +       bio_set_dev(bio, rdev->bdev);
> +       if (test_bit(Faulty, &rdev->flags))
> +               bio_io_error(bio);
> +       else if (unlikely(bio_op(bio) ==  REQ_OP_DISCARD &&
> +                         !bdev_max_discard_sectors(bio->bi_bdev)))
> +               /* Just ignore it */
> +               bio_endio(bio);
> +       else
> +               submit_bio_noacct(bio);
> +}
> +
>  static inline bool raid1_add_bio_to_plug(struct mddev *mddev, struct bio *bio,
>                                       blk_plug_cb_fn unplug)
>  {
> diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
> index e86c5e71c604..0778e398584c 100644
> --- a/drivers/md/raid1.c
> +++ b/drivers/md/raid1.c
> @@ -799,17 +799,8 @@ static void flush_bio_list(struct r1conf *conf, struct bio *bio)
>
>         while (bio) { /* submit pending writes */
>                 struct bio *next = bio->bi_next;
> -               struct md_rdev *rdev = (void *)bio->bi_bdev;
> -               bio->bi_next = NULL;
> -               bio_set_dev(bio, rdev->bdev);
> -               if (test_bit(Faulty, &rdev->flags)) {
> -                       bio_io_error(bio);
> -               } else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) &&
> -                                   !bdev_max_discard_sectors(bio->bi_bdev)))
> -                       /* Just ignore it */
> -                       bio_endio(bio);
> -               else
> -                       submit_bio_noacct(bio);
> +
> +               raid1_submit_write(bio);
>                 bio = next;
>                 cond_resched();
>         }
> diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
> index 18702051ebd1..6640507ecb0d 100644
> --- a/drivers/md/raid10.c
> +++ b/drivers/md/raid10.c
> @@ -909,17 +909,8 @@ static void flush_pending_writes(struct r10conf *conf)
>
>                 while (bio) { /* submit pending writes */
>                         struct bio *next = bio->bi_next;
> -                       struct md_rdev *rdev = (void*)bio->bi_bdev;
> -                       bio->bi_next = NULL;
> -                       bio_set_dev(bio, rdev->bdev);
> -                       if (test_bit(Faulty, &rdev->flags)) {
> -                               bio_io_error(bio);
> -                       } else if (unlikely((bio_op(bio) ==  REQ_OP_DISCARD) &&
> -                                           !bdev_max_discard_sectors(bio->bi_bdev)))
> -                               /* Just ignore it */
> -                               bio_endio(bio);
> -                       else
> -                               submit_bio_noacct(bio);
> +
> +                       raid1_submit_write(bio);
>                         bio = next;
>                         cond_resched();
>                 }
> @@ -1134,17 +1125,8 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule)
>
>         while (bio) { /* submit pending writes */
>                 struct bio *next = bio->bi_next;
> -               struct md_rdev *rdev = (void*)bio->bi_bdev;
> -               bio->bi_next = NULL;
> -               bio_set_dev(bio, rdev->bdev);
> -               if (test_bit(Faulty, &rdev->flags)) {
> -                       bio_io_error(bio);
> -               } else if (unlikely((bio_op(bio) ==  REQ_OP_DISCARD) &&
> -                                   !bdev_max_discard_sectors(bio->bi_bdev)))
> -                       /* Just ignore it */
> -                       bio_endio(bio);
> -               else
> -                       submit_bio_noacct(bio);
> +
> +               raid1_submit_write(bio);
>                 bio = next;
>                 cond_resched();
>         }
> --
> 2.39.2
>
Yu Kuai May 31, 2023, 7:56 a.m. UTC | #2 
Hi,

在 2023/05/31 15:20, Xiao Ni 写道:
>> @@ -110,6 +110,23 @@ static void md_bio_reset_resync_pages(struct bio *bio, struct resync_pages *rp,
>>          } while (idx++ < RESYNC_PAGES && size > 0);
>>   }
>>
>> +
>> +static inline void raid1_submit_write(struct bio *bio)
> 
> Hi Kuai
> 
> Is it better to change the name to rdev_submit_write? It's just a
> suggestion. The patch looks good to me.

Yes, this sounds like a better name.

Thanks,
Kuai
> 
> Regards
> Xiao
diff mbox series

Patch

diff --git a/drivers/md/raid1-10.c b/drivers/md/raid1-10.c
index 9bf19a3409ce..506299bd55cb 100644
--- a/drivers/md/raid1-10.c
+++ b/drivers/md/raid1-10.c
@@ -110,6 +110,23 @@  static void md_bio_reset_resync_pages(struct bio *bio, struct resync_pages *rp,
 	} while (idx++ < RESYNC_PAGES && size > 0);
 }
 
+
+static inline void raid1_submit_write(struct bio *bio)
+{
+	struct md_rdev *rdev = (struct md_rdev *)bio->bi_bdev;
+
+	bio->bi_next = NULL;
+	bio_set_dev(bio, rdev->bdev);
+	if (test_bit(Faulty, &rdev->flags))
+		bio_io_error(bio);
+	else if (unlikely(bio_op(bio) ==  REQ_OP_DISCARD &&
+			  !bdev_max_discard_sectors(bio->bi_bdev)))
+		/* Just ignore it */
+		bio_endio(bio);
+	else
+		submit_bio_noacct(bio);
+}
+
 static inline bool raid1_add_bio_to_plug(struct mddev *mddev, struct bio *bio,
 				      blk_plug_cb_fn unplug)
 {
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index e86c5e71c604..0778e398584c 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -799,17 +799,8 @@  static void flush_bio_list(struct r1conf *conf, struct bio *bio)
 
 	while (bio) { /* submit pending writes */
 		struct bio *next = bio->bi_next;
-		struct md_rdev *rdev = (void *)bio->bi_bdev;
-		bio->bi_next = NULL;
-		bio_set_dev(bio, rdev->bdev);
-		if (test_bit(Faulty, &rdev->flags)) {
-			bio_io_error(bio);
-		} else if (unlikely((bio_op(bio) == REQ_OP_DISCARD) &&
-				    !bdev_max_discard_sectors(bio->bi_bdev)))
-			/* Just ignore it */
-			bio_endio(bio);
-		else
-			submit_bio_noacct(bio);
+
+		raid1_submit_write(bio);
 		bio = next;
 		cond_resched();
 	}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 18702051ebd1..6640507ecb0d 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -909,17 +909,8 @@  static void flush_pending_writes(struct r10conf *conf)
 
 		while (bio) { /* submit pending writes */
 			struct bio *next = bio->bi_next;
-			struct md_rdev *rdev = (void*)bio->bi_bdev;
-			bio->bi_next = NULL;
-			bio_set_dev(bio, rdev->bdev);
-			if (test_bit(Faulty, &rdev->flags)) {
-				bio_io_error(bio);
-			} else if (unlikely((bio_op(bio) ==  REQ_OP_DISCARD) &&
-					    !bdev_max_discard_sectors(bio->bi_bdev)))
-				/* Just ignore it */
-				bio_endio(bio);
-			else
-				submit_bio_noacct(bio);
+
+			raid1_submit_write(bio);
 			bio = next;
 			cond_resched();
 		}
@@ -1134,17 +1125,8 @@  static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule)
 
 	while (bio) { /* submit pending writes */
 		struct bio *next = bio->bi_next;
-		struct md_rdev *rdev = (void*)bio->bi_bdev;
-		bio->bi_next = NULL;
-		bio_set_dev(bio, rdev->bdev);
-		if (test_bit(Faulty, &rdev->flags)) {
-			bio_io_error(bio);
-		} else if (unlikely((bio_op(bio) ==  REQ_OP_DISCARD) &&
-				    !bdev_max_discard_sectors(bio->bi_bdev)))
-			/* Just ignore it */
-			bio_endio(bio);
-		else
-			submit_bio_noacct(bio);
+
+		raid1_submit_write(bio);
 		bio = next;
 		cond_resched();
 	}