From: Coly Li <colyli@suse.de>
To: axboe@kernel.dk
Cc: linux-bcache@vger.kernel.org, linux-block@vger.kernel.org,
Christoph Hellwig <hch@lst.de>, Coly Li <colyli@suse.de>
Subject: [PATCH 6/8] bcache: remove the backing_dev_name field from struct cached_dev
Date: Wed, 20 Oct 2021 22:38:10 +0800 [thread overview]
Message-ID: <20211020143812.6403-7-colyli@suse.de> (raw)
In-Reply-To: <20211020143812.6403-1-colyli@suse.de>
From: Christoph Hellwig <hch@lst.de>
Just use the %pg format specifier to print the name directly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/bcache/bcache.h | 2 --
drivers/md/bcache/debug.c | 4 ++--
drivers/md/bcache/io.c | 8 +++----
drivers/md/bcache/request.c | 4 ++--
drivers/md/bcache/super.c | 48 ++++++++++++++++---------------------
drivers/md/bcache/sysfs.c | 2 +-
6 files changed, 29 insertions(+), 39 deletions(-)
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 47ff9ecea2e2..941685409c68 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -395,8 +395,6 @@ struct cached_dev {
atomic_t io_errors;
unsigned int error_limit;
unsigned int offline_seconds;
-
- char backing_dev_name[BDEVNAME_SIZE];
};
enum alloc_reserve {
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 116edda845c3..e803cad864be 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -137,8 +137,8 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
p2 + bv.bv_offset,
bv.bv_len),
dc->disk.c,
- "verify failed at dev %s sector %llu",
- dc->backing_dev_name,
+ "verify failed at dev %pg sector %llu",
+ dc->bdev,
(uint64_t) bio->bi_iter.bi_sector);
kunmap_atomic(p1);
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index 564357de7640..9c6f9ec55b72 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -65,15 +65,15 @@ void bch_count_backing_io_errors(struct cached_dev *dc, struct bio *bio)
* we shouldn't count failed REQ_RAHEAD bio to dc->io_errors.
*/
if (bio->bi_opf & REQ_RAHEAD) {
- pr_warn_ratelimited("%s: Read-ahead I/O failed on backing device, ignore\n",
- dc->backing_dev_name);
+ pr_warn_ratelimited("%pg: Read-ahead I/O failed on backing device, ignore\n",
+ dc->bdev);
return;
}
errors = atomic_add_return(1, &dc->io_errors);
if (errors < dc->error_limit)
- pr_err("%s: IO error on backing device, unrecoverable\n",
- dc->backing_dev_name);
+ pr_err("%pg: IO error on backing device, unrecoverable\n",
+ dc->bdev);
else
bch_cached_dev_error(dc);
}
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 6d1de889baeb..64ce5788f80c 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -651,8 +651,8 @@ static void backing_request_endio(struct bio *bio)
*/
if (unlikely(s->iop.writeback &&
bio->bi_opf & REQ_PREFLUSH)) {
- pr_err("Can't flush %s: returned bi_status %i\n",
- dc->backing_dev_name, bio->bi_status);
+ pr_err("Can't flush %pg: returned bi_status %i\n",
+ dc->bdev, bio->bi_status);
} else {
/* set to orig_bio->bi_status in bio_complete() */
s->iop.status = bio->bi_status;
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 01e6b0bce9c0..ca557204b6c6 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1025,8 +1025,8 @@ static int cached_dev_status_update(void *arg)
dc->offline_seconds = 0;
if (dc->offline_seconds >= BACKING_DEV_OFFLINE_TIMEOUT) {
- pr_err("%s: device offline for %d seconds\n",
- dc->backing_dev_name,
+ pr_err("%pg: device offline for %d seconds\n",
+ dc->bdev,
BACKING_DEV_OFFLINE_TIMEOUT);
pr_err("%s: disable I/O request due to backing device offline\n",
dc->disk.name);
@@ -1057,15 +1057,13 @@ int bch_cached_dev_run(struct cached_dev *dc)
};
if (dc->io_disable) {
- pr_err("I/O disabled on cached dev %s\n",
- dc->backing_dev_name);
+ pr_err("I/O disabled on cached dev %pg\n", dc->bdev);
ret = -EIO;
goto out;
}
if (atomic_xchg(&dc->running, 1)) {
- pr_info("cached dev %s is running already\n",
- dc->backing_dev_name);
+ pr_info("cached dev %pg is running already\n", dc->bdev);
ret = -EBUSY;
goto out;
}
@@ -1162,7 +1160,7 @@ static void cached_dev_detach_finish(struct work_struct *w)
mutex_unlock(&bch_register_lock);
- pr_info("Caching disabled for %s\n", dc->backing_dev_name);
+ pr_info("Caching disabled for %pg\n", dc->bdev);
/* Drop ref we took in cached_dev_detach() */
closure_put(&dc->disk.cl);
@@ -1202,29 +1200,27 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
return -ENOENT;
if (dc->disk.c) {
- pr_err("Can't attach %s: already attached\n",
- dc->backing_dev_name);
+ pr_err("Can't attach %pg: already attached\n", dc->bdev);
return -EINVAL;
}
if (test_bit(CACHE_SET_STOPPING, &c->flags)) {
- pr_err("Can't attach %s: shutting down\n",
- dc->backing_dev_name);
+ pr_err("Can't attach %pg: shutting down\n", dc->bdev);
return -EINVAL;
}
if (dc->sb.block_size < c->cache->sb.block_size) {
/* Will die */
- pr_err("Couldn't attach %s: block size less than set's block size\n",
- dc->backing_dev_name);
+ pr_err("Couldn't attach %pg: block size less than set's block size\n",
+ dc->bdev);
return -EINVAL;
}
/* Check whether already attached */
list_for_each_entry_safe(exist_dc, t, &c->cached_devs, list) {
if (!memcmp(dc->sb.uuid, exist_dc->sb.uuid, 16)) {
- pr_err("Tried to attach %s but duplicate UUID already attached\n",
- dc->backing_dev_name);
+ pr_err("Tried to attach %pg but duplicate UUID already attached\n",
+ dc->bdev);
return -EINVAL;
}
@@ -1242,15 +1238,13 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
if (!u) {
if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) {
- pr_err("Couldn't find uuid for %s in set\n",
- dc->backing_dev_name);
+ pr_err("Couldn't find uuid for %pg in set\n", dc->bdev);
return -ENOENT;
}
u = uuid_find_empty(c);
if (!u) {
- pr_err("Not caching %s, no room for UUID\n",
- dc->backing_dev_name);
+ pr_err("Not caching %pg, no room for UUID\n", dc->bdev);
return -EINVAL;
}
}
@@ -1318,8 +1312,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
*/
kthread_stop(dc->writeback_thread);
cancel_writeback_rate_update_dwork(dc);
- pr_err("Couldn't run cached device %s\n",
- dc->backing_dev_name);
+ pr_err("Couldn't run cached device %pg\n", dc->bdev);
return ret;
}
@@ -1335,8 +1328,8 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
/* Allow the writeback thread to proceed */
up_write(&dc->writeback_lock);
- pr_info("Caching %s as %s on set %pU\n",
- dc->backing_dev_name,
+ pr_info("Caching %pg as %s on set %pU\n",
+ dc->bdev,
dc->disk.disk->disk_name,
dc->disk.c->set_uuid);
return 0;
@@ -1458,7 +1451,6 @@ static int register_bdev(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
struct cache_set *c;
int ret = -ENOMEM;
- bdevname(bdev, dc->backing_dev_name);
memcpy(&dc->sb, sb, sizeof(struct cache_sb));
dc->bdev = bdev;
dc->bdev->bd_holder = dc;
@@ -1473,7 +1465,7 @@ static int register_bdev(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
if (bch_cache_accounting_add_kobjs(&dc->accounting, &dc->disk.kobj))
goto err;
- pr_info("registered backing device %s\n", dc->backing_dev_name);
+ pr_info("registered backing device %pg\n", dc->bdev);
list_add(&dc->list, &uncached_devices);
/* attach to a matched cache set if it exists */
@@ -1490,7 +1482,7 @@ static int register_bdev(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
return 0;
err:
- pr_notice("error %s: %s\n", dc->backing_dev_name, err);
+ pr_notice("error %pg: %s\n", dc->bdev, err);
bcache_device_stop(&dc->disk);
return ret;
}
@@ -1617,8 +1609,8 @@ bool bch_cached_dev_error(struct cached_dev *dc)
/* make others know io_disable is true earlier */
smp_mb();
- pr_err("stop %s: too many IO errors on backing device %s\n",
- dc->disk.disk->disk_name, dc->backing_dev_name);
+ pr_err("stop %s: too many IO errors on backing device %pg\n",
+ dc->disk.disk->disk_name, dc->bdev);
bcache_device_stop(&dc->disk);
return true;
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 05ac1d6fbbf3..1f0dce30fa75 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -271,7 +271,7 @@ SHOW(__bch_cached_dev)
}
if (attr == &sysfs_backing_dev_name) {
- snprintf(buf, BDEVNAME_SIZE + 1, "%s", dc->backing_dev_name);
+ snprintf(buf, BDEVNAME_SIZE + 1, "%pg", dc->bdev);
strcat(buf, "\n");
return strlen(buf);
}
--
2.31.1
next prev parent reply other threads:[~2021-10-20 14:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-20 14:38 [PATCH 0/8] bcache patches for Linux v5.16 (first wave) Coly Li
2021-10-20 14:38 ` [PATCH 1/8] md: bcache: Fix spelling of 'acquire' Coly Li
2021-10-20 14:38 ` [PATCH 2/8] bcache: reserve never used bits from bkey.high Coly Li
2021-10-20 14:38 ` [PATCH 3/8] bcache: fix error info in register_bcache() Coly Li
2021-10-20 14:38 ` [PATCH 4/8] bcache: move calc_cached_dev_sectors to proper place on backing device detach Coly Li
2021-10-20 14:38 ` [PATCH 5/8] bcache: remove the cache_dev_name field from struct cache Coly Li
2021-10-20 14:38 ` Coly Li [this message]
2021-10-20 14:38 ` [PATCH 7/8] bcache: use bvec_kmap_local in bch_data_verify Coly Li
2021-10-20 14:38 ` [PATCH 8/8] bcache: remove bch_crc64_update Coly Li
2021-10-20 14:41 ` [PATCH 0/8] bcache patches for Linux v5.16 (first wave) Jens Axboe
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