[RFC 11/12] bio: add bio_endio_errno

[Andreas Gruenbacher <agruenba@redhat.com>]

Add a bio_endio_errno() helper as a shortcut for calling bio_set_errno()
and bio_endio() in sequence. Use the new helper throughout the code.

Created with Coccinelle using the following semantic patch:

@@
expression bio, errno;
@@
- bio_set_errno(bio, errno);
- bio_endio(bio);
+ bio_endio_errno(bio, errno);

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
 block/blk-merge.c                | 6 ++----
 drivers/block/drbd/drbd_req.c    | 3 +--
 drivers/md/dm-integrity.c        | 9 +++------
 drivers/md/dm-pcache/dm_pcache.c | 3 +--
 drivers/md/dm-vdo/data-vio.c     | 3 +--
 drivers/md/raid10.c              | 6 ++----
 drivers/nvdimm/pmem.c            | 4 +---
 fs/btrfs/raid56.c                | 6 ++----
 fs/iomap/ioend.c                 | 3 +--
 fs/xfs/xfs_aops.c                | 3 +--
 include/linux/bio.h              | 6 ++++++
 11 files changed, 21 insertions(+), 31 deletions(-)

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 441013bf59d7..25057d57e9ac 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -122,8 +122,7 @@ struct bio *bio_submit_split_bioset(struct bio *bio, unsigned int split_sectors,
 	struct bio *split = bio_split(bio, split_sectors, GFP_NOIO, bs);
 
 	if (IS_ERR(split)) {
-		bio_set_errno(bio, PTR_ERR(split));
-		bio_endio(bio);
+		bio_endio_errno(bio, PTR_ERR(split));
 		return NULL;
 	}
 
@@ -143,8 +142,7 @@ EXPORT_SYMBOL_GPL(bio_submit_split_bioset);
 static struct bio *bio_submit_split(struct bio *bio, int split_sectors)
 {
 	if (unlikely(split_sectors < 0)) {
-		bio_set_errno(bio, split_sectors);
-		bio_endio(bio);
+		bio_endio_errno(bio, split_sectors);
 		return NULL;
 	}
 
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 95a58ad6fdcf..5bedc972b622 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -176,8 +176,7 @@ void start_new_tl_epoch(struct drbd_connection *connection)
 void complete_master_bio(struct drbd_device *device,
 		struct bio_and_error *m)
 {
-	bio_set_errno(m->bio, m->error);
-	bio_endio(m->bio);
+	bio_endio_errno(m->bio, m->error);
 	dec_ap_bio(device);
 }
 
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 5220e15b6537..90780a112009 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2594,8 +2594,7 @@ static int dm_integrity_map_inline(struct dm_integrity_io *dio, bool from_map)
 
 	bip = bio_integrity_alloc(bio, GFP_NOIO, 1);
 	if (IS_ERR(bip)) {
-		bio_set_errno(bio, PTR_ERR(bip));
-		bio_endio(bio);
+		bio_endio_errno(bio, PTR_ERR(bip));
 		return DM_MAPIO_SUBMITTED;
 	}
 
@@ -2662,8 +2661,7 @@ static void dm_integrity_inline_recheck(struct work_struct *w)
 		bip = bio_integrity_alloc(outgoing_bio, GFP_NOIO, 1);
 		if (IS_ERR(bip)) {
 			bio_put(outgoing_bio);
-			bio_set_errno(bio, PTR_ERR(bip));
-			bio_endio(bio);
+			bio_endio_errno(bio, PTR_ERR(bip));
 			return;
 		}
 
@@ -2680,8 +2678,7 @@ static void dm_integrity_inline_recheck(struct work_struct *w)
 		r = submit_bio_wait(outgoing_bio);
 		if (unlikely(r != 0)) {
 			bio_put(outgoing_bio);
-			bio_set_errno(bio, r);
-			bio_endio(bio);
+			bio_endio_errno(bio, r);
 			return;
 		}
 		bio_put(outgoing_bio);
diff --git a/drivers/md/dm-pcache/dm_pcache.c b/drivers/md/dm-pcache/dm_pcache.c
index 4acfaab91170..b3795e88f364 100644
--- a/drivers/md/dm-pcache/dm_pcache.c
+++ b/drivers/md/dm-pcache/dm_pcache.c
@@ -74,8 +74,7 @@ static void end_req(struct kref *ref)
 		pcache_req_get(pcache_req);
 		defer_req(pcache_req);
 	} else {
-		bio_set_errno(bio, ret);
-		bio_endio(bio);
+		bio_endio_errno(bio, ret);
 
 		if (atomic_dec_and_test(&pcache->inflight_reqs))
 			wake_up(&pcache->inflight_wq);
diff --git a/drivers/md/dm-vdo/data-vio.c b/drivers/md/dm-vdo/data-vio.c
index eaa435dd8e60..47827ea61d91 100644
--- a/drivers/md/dm-vdo/data-vio.c
+++ b/drivers/md/dm-vdo/data-vio.c
@@ -287,8 +287,7 @@ static void acknowledge_data_vio(struct data_vio *data_vio)
 	if (data_vio->is_partial)
 		vdo_count_bios(&vdo->stats.bios_acknowledged_partial, bio);
 
-	bio_set_errno(bio, error);
-	bio_endio(bio);
+	bio_endio_errno(bio, error);
 }
 
 static void copy_to_bio(struct bio *bio, char *data_ptr)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 62d5bc9f7b3e..7cc27819beb5 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1665,8 +1665,7 @@ static int raid10_handle_discard(struct mddev *mddev, struct bio *bio)
 		split_size = stripe_size - remainder;
 		split = bio_split(bio, split_size, GFP_NOIO, &conf->bio_split);
 		if (IS_ERR(split)) {
-			bio_set_errno(bio, PTR_ERR(split));
-			bio_endio(bio);
+			bio_endio_errno(bio, PTR_ERR(split));
 			return 0;
 		}
 
@@ -1682,8 +1681,7 @@ static int raid10_handle_discard(struct mddev *mddev, struct bio *bio)
 		split_size = bio_sectors(bio) - remainder;
 		split = bio_split(bio, split_size, GFP_NOIO, &conf->bio_split);
 		if (IS_ERR(split)) {
-			bio_set_errno(bio, PTR_ERR(split));
-			bio_endio(bio);
+			bio_endio_errno(bio, PTR_ERR(split));
 			return 0;
 		}
 
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index aa2a486522b5..ed763c1ec955 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -232,9 +232,7 @@ static void pmem_submit_bio(struct bio *bio)
 	if (bio->bi_opf & REQ_FUA)
 		ret = nvdimm_flush(nd_region, bio);
 
-	bio_set_errno(bio, ret);
-
-	bio_endio(bio);
+	bio_endio_errno(bio, ret);
 }
 
 /* see "strong" declaration in tools/testing/nvdimm/pmem-dax.c */
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index ff802b6513af..bf45e8fd3aa1 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1750,8 +1750,7 @@ void raid56_parity_write(struct bio *bio, struct btrfs_io_context *bioc)
 
 	rbio = alloc_rbio(fs_info, bioc);
 	if (IS_ERR(rbio)) {
-		bio_set_errno(bio, PTR_ERR(rbio));
-		bio_endio(bio);
+		bio_endio_errno(bio, PTR_ERR(rbio));
 		return;
 	}
 	rbio->operation = BTRFS_RBIO_WRITE;
@@ -2148,8 +2147,7 @@ void raid56_parity_recover(struct bio *bio, struct btrfs_io_context *bioc,
 
 	rbio = alloc_rbio(fs_info, bioc);
 	if (IS_ERR(rbio)) {
-		bio_set_errno(bio, PTR_ERR(rbio));
-		bio_endio(bio);
+		bio_endio_errno(bio, PTR_ERR(rbio));
 		return;
 	}
 
diff --git a/fs/iomap/ioend.c b/fs/iomap/ioend.c
index 67cd48180fb2..d9e9659b55b3 100644
--- a/fs/iomap/ioend.c
+++ b/fs/iomap/ioend.c
@@ -87,8 +87,7 @@ int iomap_ioend_writeback_submit(struct iomap_writepage_ctx *wpc, int error)
 		error = -EIO;
 
 	if (error) {
-		bio_set_errno(&ioend->io_bio, error);
-		bio_endio(&ioend->io_bio);
+		bio_endio_errno(&ioend->io_bio, error);
 		return error;
 	}
 
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 61368223a069..4da13a15cb62 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -653,8 +653,7 @@ xfs_zoned_writeback_submit(
 
 	ioend->io_bio.bi_end_io = xfs_end_bio;
 	if (error) {
-		bio_set_errno(&ioend->io_bio, error);
-		bio_endio(&ioend->io_bio);
+		bio_endio_errno(&ioend->io_bio, error);
 		return error;
 	}
 	xfs_zone_alloc_and_submit(ioend, &XFS_ZWPC(wpc)->open_zone);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ad70a88cef09..06fb8ae018c4 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -403,6 +403,12 @@ static inline void bio_set_errno(struct bio *bio, int errno)
 		WRITE_ONCE(bio->bi_status, errno_to_blk_status(errno));
 }
 
+static inline void bio_endio_errno(struct bio *bio, int errno)
+{
+	bio_set_errno(bio, errno);
+	bio_endio(bio);
+}
+
 /*
  * Calculate number of bvec segments that should be allocated to fit data
  * pointed by @iter. If @iter is backed by bvec it's going to be reused
-- 
2.51.0