From 32f61d67570db036dba9e4fb2509b5343e28f627 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 1 Sep 2020 17:57:47 +0200 Subject: nvdimm: simplify revalidate_disk handling The nvdimm block driver abuse revalidate_disk in a strange way, and totally unrelated to what other drivers do. Simplify this by just calling nvdimm_revalidate_disk (which seems rather misnamed) from the probe routines, as the additional bdev size revalidation is pointless at this point, and remove the revalidate_disk methods given that it can only be triggered from add_disk, which is right before the manual calls. Signed-off-by: Christoph Hellwig Reviewed-by: Josef Bacik Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe --- drivers/nvdimm/blk.c | 3 +-- drivers/nvdimm/btt.c | 3 +-- drivers/nvdimm/bus.c | 9 +++------ drivers/nvdimm/nd.h | 2 +- drivers/nvdimm/pmem.c | 3 +-- 5 files changed, 7 insertions(+), 13 deletions(-) (limited to 'drivers/nvdimm') diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index 1f718381a045..22e5617b2cea 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -226,7 +226,6 @@ static int nsblk_rw_bytes(struct nd_namespace_common *ndns, static const struct block_device_operations nd_blk_fops = { .owner = THIS_MODULE, .submit_bio = nd_blk_submit_bio, - .revalidate_disk = nvdimm_revalidate_disk, }; static void nd_blk_release_queue(void *q) @@ -284,7 +283,7 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk) set_capacity(disk, available_disk_size >> SECTOR_SHIFT); device_add_disk(dev, disk, NULL); - revalidate_disk(disk); + nvdimm_check_and_set_ro(disk); return 0; } diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 0ff610e728ff..0d710140bf93 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1513,7 +1513,6 @@ static const struct block_device_operations btt_fops = { .submit_bio = btt_submit_bio, .rw_page = btt_rw_page, .getgeo = btt_getgeo, - .revalidate_disk = nvdimm_revalidate_disk, }; static int btt_blk_init(struct btt *btt) @@ -1558,7 +1557,7 @@ static int btt_blk_init(struct btt *btt) set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9); device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL); btt->nd_btt->size = btt->nlba * (u64)btt->sector_size; - revalidate_disk(btt->btt_disk); + nvdimm_check_and_set_ro(btt->btt_disk); return 0; } diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 955265656b96..2304c6183822 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -628,7 +628,7 @@ int __nd_driver_register(struct nd_device_driver *nd_drv, struct module *owner, } EXPORT_SYMBOL(__nd_driver_register); -int nvdimm_revalidate_disk(struct gendisk *disk) +void nvdimm_check_and_set_ro(struct gendisk *disk) { struct device *dev = disk_to_dev(disk)->parent; struct nd_region *nd_region = to_nd_region(dev->parent); @@ -639,16 +639,13 @@ int nvdimm_revalidate_disk(struct gendisk *disk) * read-only if the disk is already read-only. */ if (disk_ro || nd_region->ro == disk_ro) - return 0; + return; dev_info(dev, "%s read-only, marking %s read-only\n", dev_name(&nd_region->dev), disk->disk_name); set_disk_ro(disk, 1); - - return 0; - } -EXPORT_SYMBOL(nvdimm_revalidate_disk); +EXPORT_SYMBOL(nvdimm_check_and_set_ro); static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 85c1ae813ea3..72740108ba42 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -361,7 +361,7 @@ u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region); void nvdimm_bus_lock(struct device *dev); void nvdimm_bus_unlock(struct device *dev); bool is_nvdimm_bus_locked(struct device *dev); -int nvdimm_revalidate_disk(struct gendisk *disk); +void nvdimm_check_and_set_ro(struct gendisk *disk); void nvdimm_drvdata_release(struct kref *kref); void put_ndd(struct nvdimm_drvdata *ndd); int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd); diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index fab29b514372..140cf3b9000c 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -281,7 +281,6 @@ static const struct block_device_operations pmem_fops = { .owner = THIS_MODULE, .submit_bio = pmem_submit_bio, .rw_page = pmem_rw_page, - .revalidate_disk = nvdimm_revalidate_disk, }; static int pmem_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff, @@ -501,7 +500,7 @@ static int pmem_attach_disk(struct device *dev, if (devm_add_action_or_reset(dev, pmem_release_disk, pmem)) return -ENOMEM; - revalidate_disk(disk); + nvdimm_check_and_set_ro(disk); pmem->bb_state = sysfs_get_dirent(disk_to_dev(disk)->kobj.sd, "badblocks"); -- cgit v1.2.3 From a8b456d01cd6b37191f14248f3e2bdbe5ce3a89e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 24 Sep 2020 08:51:36 +0200 Subject: bdi: remove BDI_CAP_SYNCHRONOUS_IO BDI_CAP_SYNCHRONOUS_IO is only checked in the swap code, and used to decided if ->rw_page can be used on a block device. Just check up for the method instead. The only complication is that zram needs a second set of block_device_operations as it can switch between modes that actually support ->rw_page and those who don't. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Johannes Thumshirn Signed-off-by: Jens Axboe --- drivers/nvdimm/btt.c | 2 -- drivers/nvdimm/pmem.c | 1 - 2 files changed, 3 deletions(-) (limited to 'drivers/nvdimm') diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 0d710140bf93..12ff6f8784ac 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1537,8 +1537,6 @@ static int btt_blk_init(struct btt *btt) btt->btt_disk->private_data = btt; btt->btt_disk->queue = btt->btt_queue; btt->btt_disk->flags = GENHD_FL_EXT_DEVT; - btt->btt_disk->queue->backing_dev_info->capabilities |= - BDI_CAP_SYNCHRONOUS_IO; blk_queue_logical_block_size(btt->btt_queue, btt->sector_size); blk_queue_max_hw_sectors(btt->btt_queue, UINT_MAX); diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 140cf3b9000c..1711fdfd8d28 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -475,7 +475,6 @@ static int pmem_attach_disk(struct device *dev, disk->queue = q; disk->flags = GENHD_FL_EXT_DEVT; disk->private_data = pmem; - disk->queue->backing_dev_info->capabilities |= BDI_CAP_SYNCHRONOUS_IO; nvdimm_namespace_disk_name(ndns, disk->disk_name); set_capacity(disk, (pmem->size - pmem->pfn_pad - pmem->data_offset) / 512); -- cgit v1.2.3