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Message-ID: <20251221025233.87087-12-agruenba@redhat.com>
Date: Sun, 21 Dec 2025 03:52:26 +0100
From: Andreas Gruenbacher <agruenba@...hat.com>
To: Christoph Hellwig <hch@...radead.org>,
Jens Axboe <axboe@...nel.dk>,
Chris Mason <clm@...com>,
David Sterba <dsterba@...e.com>,
Satya Tangirala <satyat@...gle.com>
Cc: Andreas Gruenbacher <agruenba@...hat.com>,
linux-block@...r.kernel.org,
linux-btrfs@...r.kernel.org,
linux-raid@...r.kernel.org,
dm-devel@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: [RFC v2 11/17] bio: bio_set_status from non-zero errno
In these instances, the compiler knows that errno is not 0 and so it can
optimize 'bio_set_status(bio, errno_to_blk_status(errno))' as
'bio->bi_status = __errno_to_blk_status(errno)'.
Created with Coccinelle using the following semantic patch:
@@
struct bio *bio;
expression errno;
@@
- if (errno)
- bio->bi_status = errno_to_blk_status(errno);
+ if (errno)
+ bio_set_status(bio, errno_to_blk_status(errno));
@@
struct bio *bio;
expression errno;
@@
- if (unlikely(errno))
- bio->bi_status = errno_to_blk_status(errno);
+ if (unlikely(errno))
+ bio_set_status(bio, errno_to_blk_status(errno));
@@
expression status;
struct bio *bio;
@@
if (IS_ERR(status)) {
<...
- bio->bi_status = errno_to_blk_status(PTR_ERR(status));
+ bio_set_status(bio, errno_to_blk_status(PTR_ERR(status)));
...>
}
@@
expression errno;
struct bio *bio;
@@
if (!errno)
return;
-bio->bi_status = errno_to_blk_status(errno);
+bio_set_status(bio, errno_to_blk_status(errno));
@@
expression errno;
struct bio bio;
@@
if (errno)
- bio.bi_status = errno_to_blk_status(errno);
+ bio_set_status(&bio, errno_to_blk_status(errno));
@@
expression errno;
struct bio bio;
@@
if (IS_ERR_VALUE(errno))
- bio.bi_status = errno_to_blk_status(errno);
+ bio_set_status(&bio, errno_to_blk_status(errno));
@@
expression errno;
struct bio *bio;
@@
if (errno) {
<...
- bio->bi_status = errno_to_blk_status(errno);
+ bio_set_status(bio, errno_to_blk_status(errno));
...>
}
@@
expression errno;
struct iomap_ioend *ioend;
struct bio bio;
@@
if (errno) {
<...
- ioend->io_bio.bi_status = errno_to_blk_status(errno);
+ bio_set_status(&ioend->io_bio, errno_to_blk_status(errno));
...>
}
@@
expression errno;
struct bio *bio;
@@
if (errno < 0) {
<...
- bio->bi_status = errno_to_blk_status(errno);
+ bio_set_status(bio, errno_to_blk_status(errno));
...>
}
@@
expression errno;
struct bio *bio;
@@
if (unlikely(errno < 0)) {
<...
- bio->bi_status = errno_to_blk_status(errno);
+ bio_set_status(bio, errno_to_blk_status(errno));
...>
}
@@
expression errno;
struct bio *bio;
@@
if (unlikely(errno != 0)) {
<...
- bio->bi_status = errno_to_blk_status(errno);
+ bio_set_status(bio, errno_to_blk_status(errno));
...>
}
Signed-off-by: Andreas Gruenbacher <agruenba@...hat.com>
---
block/blk-merge.c | 4 ++--
drivers/block/drbd/drbd_req.c | 2 +-
drivers/md/dm-ebs-target.c | 2 +-
drivers/md/dm-integrity.c | 6 +++---
drivers/md/raid10.c | 6 ++++--
drivers/nvdimm/btt.c | 2 +-
drivers/nvdimm/pmem.c | 2 +-
fs/btrfs/bio.c | 2 +-
fs/btrfs/direct-io.c | 2 +-
fs/btrfs/raid56.c | 4 ++--
fs/crypto/bio.c | 2 +-
fs/erofs/fscache.c | 8 +++++---
fs/iomap/ioend.c | 2 +-
fs/xfs/xfs_aops.c | 2 +-
14 files changed, 25 insertions(+), 21 deletions(-)
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 37864c5d287e..27ea5ffb8f77 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -122,7 +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->bi_status = errno_to_blk_status(PTR_ERR(split));
+ bio_set_status(bio, errno_to_blk_status(PTR_ERR(split)));
bio_endio(bio);
return NULL;
}
@@ -143,7 +143,7 @@ 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->bi_status = errno_to_blk_status(split_sectors);
+ bio_set_status(bio, errno_to_blk_status(split_sectors));
bio_endio(bio);
return NULL;
}
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index baa08d56494d..983b2ff5eb6b 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -177,7 +177,7 @@ void complete_master_bio(struct drbd_device *device,
struct bio_and_error *m)
{
if (unlikely(m->error))
- m->bio->bi_status = errno_to_blk_status(m->error);
+ bio_set_status(m->bio, errno_to_blk_status(m->error));
bio_endio(m->bio);
dec_ap_bio(device);
}
diff --git a/drivers/md/dm-ebs-target.c b/drivers/md/dm-ebs-target.c
index 6abb31ca9662..2c97c36df23a 100644
--- a/drivers/md/dm-ebs-target.c
+++ b/drivers/md/dm-ebs-target.c
@@ -217,7 +217,7 @@ static void __ebs_process_bios(struct work_struct *ws)
}
if (r < 0)
- bio->bi_status = errno_to_blk_status(r);
+ bio_set_status(bio, errno_to_blk_status(r));
}
/*
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 6d04b067060d..c5c7c167b45d 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2593,7 +2593,7 @@ 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->bi_status = errno_to_blk_status(PTR_ERR(bip));
+ bio_set_status(bio, errno_to_blk_status(PTR_ERR(bip)));
bio_endio(bio);
return DM_MAPIO_SUBMITTED;
}
@@ -2661,7 +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->bi_status = errno_to_blk_status(PTR_ERR(bip));
+ bio_set_status(bio, errno_to_blk_status(PTR_ERR(bip)));
bio_endio(bio);
return;
}
@@ -2679,7 +2679,7 @@ 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->bi_status = errno_to_blk_status(r);
+ bio_set_status(bio, errno_to_blk_status(r));
bio_endio(bio);
return;
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 59b900672a7a..3e15e190f103 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1665,7 +1665,8 @@ 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->bi_status = errno_to_blk_status(PTR_ERR(split));
+ bio_set_status(bio,
+ errno_to_blk_status(PTR_ERR(split)));
bio_endio(bio);
return 0;
}
@@ -1682,7 +1683,8 @@ 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->bi_status = errno_to_blk_status(PTR_ERR(split));
+ bio_set_status(bio,
+ errno_to_blk_status(PTR_ERR(split)));
bio_endio(bio);
return 0;
}
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 3da30dcbf26c..3b9a7d7b9694 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1468,7 +1468,7 @@ static void btt_submit_bio(struct bio *bio)
(op_is_write(bio_op(bio))) ? "WRITE" :
"READ",
(unsigned long long) iter.bi_sector, len);
- bio->bi_status = errno_to_blk_status(err);
+ bio_set_status(bio, errno_to_blk_status(err));
break;
}
}
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 4fdcbe56a3bc..6b64a217d180 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -233,7 +233,7 @@ static void pmem_submit_bio(struct bio *bio)
ret = nvdimm_flush(nd_region, bio);
if (ret)
- bio->bi_status = errno_to_blk_status(ret);
+ bio_set_status(bio, errno_to_blk_status(ret));
bio_endio(bio);
}
diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c
index 519635e2833a..1947f1cb7d08 100644
--- a/fs/btrfs/bio.c
+++ b/fs/btrfs/bio.c
@@ -540,7 +540,7 @@ static void run_one_async_start(struct btrfs_work *work)
ret = btrfs_bio_csum(async->bbio);
if (ret)
- async->bbio->bio.bi_status = errno_to_blk_status(ret);
+ bio_set_status(&async->bbio->bio, errno_to_blk_status(ret));
}
/*
diff --git a/fs/btrfs/direct-io.c b/fs/btrfs/direct-io.c
index 802d4dbe5b38..04facbbe6994 100644
--- a/fs/btrfs/direct-io.c
+++ b/fs/btrfs/direct-io.c
@@ -738,7 +738,7 @@ static void btrfs_dio_submit_io(const struct iomap_iter *iter, struct bio *bio,
btrfs_finish_ordered_extent(dio_data->ordered, NULL,
file_offset, dip->bytes,
!ret);
- bio->bi_status = errno_to_blk_status(ret);
+ bio_set_status(bio, errno_to_blk_status(ret));
iomap_dio_bio_end_io(bio);
return;
}
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 0135dceb7baa..b60ab0bb08ad 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1750,7 +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->bi_status = errno_to_blk_status(PTR_ERR(rbio));
+ bio_set_status(bio, errno_to_blk_status(PTR_ERR(rbio)));
bio_endio(bio);
return;
}
@@ -2148,7 +2148,7 @@ void raid56_parity_recover(struct bio *bio, struct btrfs_io_context *bioc,
rbio = alloc_rbio(fs_info, bioc);
if (IS_ERR(rbio)) {
- bio->bi_status = errno_to_blk_status(PTR_ERR(rbio));
+ bio_set_status(bio, errno_to_blk_status(PTR_ERR(rbio)));
bio_endio(bio);
return;
}
diff --git a/fs/crypto/bio.c b/fs/crypto/bio.c
index 5f5599020e94..21a3a1c170a2 100644
--- a/fs/crypto/bio.c
+++ b/fs/crypto/bio.c
@@ -39,7 +39,7 @@ bool fscrypt_decrypt_bio(struct bio *bio)
fi.offset);
if (err) {
- bio->bi_status = errno_to_blk_status(err);
+ bio_set_status(bio, errno_to_blk_status(err));
return false;
}
}
diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
index 362acf828279..9d84bf24e501 100644
--- a/fs/erofs/fscache.c
+++ b/fs/erofs/fscache.c
@@ -183,8 +183,10 @@ static void erofs_fscache_bio_endio(void *priv, ssize_t transferred_or_error)
{
struct erofs_fscache_bio *io = priv;
- if (IS_ERR_VALUE(transferred_or_error))
- io->bio.bi_status = errno_to_blk_status(transferred_or_error);
+ if (IS_ERR_VALUE(transferred_or_error)) {
+ bio_set_status(&io->bio,
+ errno_to_blk_status(transferred_or_error));
+ }
io->bio.bi_end_io(&io->bio);
BUILD_BUG_ON(offsetof(struct erofs_fscache_bio, io) != 0);
erofs_fscache_io_put(&io->io);
@@ -215,7 +217,7 @@ void erofs_fscache_submit_bio(struct bio *bio)
erofs_fscache_io_put(&io->io);
if (!ret)
return;
- bio->bi_status = errno_to_blk_status(ret);
+ bio_set_status(bio, errno_to_blk_status(ret));
bio->bi_end_io(bio);
}
diff --git a/fs/iomap/ioend.c b/fs/iomap/ioend.c
index b49fa75eab26..1ebe6730d013 100644
--- a/fs/iomap/ioend.c
+++ b/fs/iomap/ioend.c
@@ -87,7 +87,7 @@ int iomap_ioend_writeback_submit(struct iomap_writepage_ctx *wpc, int error)
error = -EIO;
if (error) {
- ioend->io_bio.bi_status = errno_to_blk_status(error);
+ bio_set_status(&ioend->io_bio, errno_to_blk_status(error));
bio_endio(&ioend->io_bio);
return error;
}
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index a26f79815533..bd2b828164cb 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -653,7 +653,7 @@ xfs_zoned_writeback_submit(
ioend->io_bio.bi_end_io = xfs_end_bio;
if (error) {
- ioend->io_bio.bi_status = errno_to_blk_status(error);
+ bio_set_status(&ioend->io_bio, errno_to_blk_status(error));
bio_endio(&ioend->io_bio);
return error;
}
--
2.52.0
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