From: gregkh@linuxfoundation.org
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Hannes Reinecke <hare@suse.com>,
Christoph Hellwig <hch@lst.de>,
"Michael S. Tsirkin" <mst@redhat.com>,
Bart Van Assche <bart.vanassche@wdc.com>,
Jens Axboe <axboe@kernel.dk>,
Jeffle Xu <jefflexu@linux.alibaba.com>
Subject: [PATCH 4.19 15/39] virtio-blk: modernize sysfs attribute creation
Date: Wed, 10 Mar 2021 14:24:23 +0100 [thread overview]
Message-ID: <20210310132320.206766651@linuxfoundation.org> (raw)
In-Reply-To: <20210310132319.708237392@linuxfoundation.org>
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
From: Hannes Reinecke <hare@suse.de>
commit e982c4d0a29b1d61fbe7716a8dcf8984936d6730 upstream.
Use new-style DEVICE_ATTR_RO/DEVICE_ATTR_RW to create the sysfs attributes
and register the disk with default sysfs attribute groups.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/block/virtio_blk.c | 68 +++++++++++++++++++++++++--------------------
1 file changed, 39 insertions(+), 29 deletions(-)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -423,8 +423,8 @@ static int minor_to_index(int minor)
return minor >> PART_BITS;
}
-static ssize_t virtblk_serial_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t serial_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct gendisk *disk = dev_to_disk(dev);
int err;
@@ -443,7 +443,7 @@ static ssize_t virtblk_serial_show(struc
return err;
}
-static DEVICE_ATTR(serial, 0444, virtblk_serial_show, NULL);
+static DEVICE_ATTR_RO(serial);
/* The queue's logical block size must be set before calling this */
static void virtblk_update_capacity(struct virtio_blk *vblk, bool resize)
@@ -619,8 +619,8 @@ static const char *const virtblk_cache_t
};
static ssize_t
-virtblk_cache_type_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+cache_type_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct gendisk *disk = dev_to_disk(dev);
struct virtio_blk *vblk = disk->private_data;
@@ -638,8 +638,7 @@ virtblk_cache_type_store(struct device *
}
static ssize_t
-virtblk_cache_type_show(struct device *dev, struct device_attribute *attr,
- char *buf)
+cache_type_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct gendisk *disk = dev_to_disk(dev);
struct virtio_blk *vblk = disk->private_data;
@@ -649,12 +648,38 @@ virtblk_cache_type_show(struct device *d
return snprintf(buf, 40, "%s\n", virtblk_cache_types[writeback]);
}
-static const struct device_attribute dev_attr_cache_type_ro =
- __ATTR(cache_type, 0444,
- virtblk_cache_type_show, NULL);
-static const struct device_attribute dev_attr_cache_type_rw =
- __ATTR(cache_type, 0644,
- virtblk_cache_type_show, virtblk_cache_type_store);
+static DEVICE_ATTR_RW(cache_type);
+
+static struct attribute *virtblk_attrs[] = {
+ &dev_attr_serial.attr,
+ &dev_attr_cache_type.attr,
+ NULL,
+};
+
+static umode_t virtblk_attrs_are_visible(struct kobject *kobj,
+ struct attribute *a, int n)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct gendisk *disk = dev_to_disk(dev);
+ struct virtio_blk *vblk = disk->private_data;
+ struct virtio_device *vdev = vblk->vdev;
+
+ if (a == &dev_attr_cache_type.attr &&
+ !virtio_has_feature(vdev, VIRTIO_BLK_F_CONFIG_WCE))
+ return S_IRUGO;
+
+ return a->mode;
+}
+
+static const struct attribute_group virtblk_attr_group = {
+ .attrs = virtblk_attrs,
+ .is_visible = virtblk_attrs_are_visible,
+};
+
+static const struct attribute_group *virtblk_attr_groups[] = {
+ &virtblk_attr_group,
+ NULL,
+};
static int virtblk_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
@@ -858,24 +883,9 @@ static int virtblk_probe(struct virtio_d
virtblk_update_capacity(vblk, false);
virtio_device_ready(vdev);
- device_add_disk(&vdev->dev, vblk->disk, NULL);
- err = device_create_file(disk_to_dev(vblk->disk), &dev_attr_serial);
- if (err)
- goto out_del_disk;
-
- if (virtio_has_feature(vdev, VIRTIO_BLK_F_CONFIG_WCE))
- err = device_create_file(disk_to_dev(vblk->disk),
- &dev_attr_cache_type_rw);
- else
- err = device_create_file(disk_to_dev(vblk->disk),
- &dev_attr_cache_type_ro);
- if (err)
- goto out_del_disk;
+ device_add_disk(&vdev->dev, vblk->disk, virtblk_attr_groups);
return 0;
-out_del_disk:
- del_gendisk(vblk->disk);
- blk_cleanup_queue(vblk->disk->queue);
out_free_tags:
blk_mq_free_tag_set(&vblk->tag_set);
out_put_disk:
next prev parent reply other threads:[~2021-03-10 13:29 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 13:24 [PATCH 4.19 00/39] 4.19.180-rc1 review gregkh
2021-03-10 13:24 ` [PATCH 4.19 01/39] btrfs: raid56: simplify tracking of Q stripe presence gregkh
2021-03-10 13:24 ` [PATCH 4.19 02/39] btrfs: fix raid6 qstripe kmap gregkh
2021-03-10 13:24 ` [PATCH 4.19 03/39] btrfs: validate qgroup inherit for SNAP_CREATE_V2 ioctl gregkh
2021-03-10 13:24 ` [PATCH 4.19 04/39] btrfs: free correct amount of space in btrfs_delayed_inode_reserve_metadata gregkh
2021-03-10 13:24 ` [PATCH 4.19 05/39] btrfs: unlock extents in btrfs_zero_range in case of quota reservation errors gregkh
2021-03-10 13:24 ` [PATCH 4.19 06/39] PM: runtime: Update device status before letting suppliers suspend gregkh
2021-03-10 13:24 ` [PATCH 4.19 07/39] dm bufio: subtract the number of initial sectors in dm_bufio_get_device_size gregkh
2021-03-10 13:24 ` [PATCH 4.19 08/39] drm/amdgpu: fix parameter error of RREG32_PCIE() in amdgpu_regs_pcie gregkh
2021-03-10 13:24 ` [PATCH 4.19 09/39] usbip: tools: fix build error for multiple definition gregkh
2021-03-10 13:24 ` [PATCH 4.19 10/39] Revert "zram: close udev startup race condition as default groups" gregkh
2021-03-10 13:24 ` [PATCH 4.19 11/39] block: genhd: add groups argument to device_add_disk gregkh
2021-03-10 13:24 ` [PATCH 4.19 12/39] nvme: register ns_id attributes as default sysfs groups gregkh
2021-03-10 13:24 ` [PATCH 4.19 13/39] aoe: register default groups with device_add_disk() gregkh
2021-03-10 13:24 ` [PATCH 4.19 14/39] zram: " gregkh
2021-03-10 13:24 ` gregkh [this message]
2021-03-10 13:24 ` [PATCH 4.19 16/39] ALSA: ctxfi: cthw20k2: fix mask on conf to allow 4 bits gregkh
2021-03-10 13:24 ` [PATCH 4.19 17/39] RDMA/rxe: Fix missing kconfig dependency on CRYPTO gregkh
2021-03-10 13:24 ` [PATCH 4.19 18/39] rsxx: Return -EFAULT if copy_to_user() fails gregkh
2021-03-10 13:24 ` [PATCH 4.19 19/39] dm verity: fix FEC for RS roots unaligned to block size gregkh
2021-03-10 13:24 ` [PATCH 4.19 20/39] r8169: fix resuming from suspend on RTL8105e if machine runs on battery gregkh
2021-03-10 13:24 ` [PATCH 4.19 21/39] net: dsa: add GRO support via gro_cells gregkh
2021-03-10 13:24 ` [PATCH 4.19 22/39] dm table: fix iterate_devices based device capability checks gregkh
2021-03-10 13:24 ` [PATCH 4.19 23/39] dm table: fix DAX " gregkh
2021-03-10 13:24 ` [PATCH 4.19 24/39] dm table: fix zoned " gregkh
2021-03-10 13:24 ` [PATCH 4.19 25/39] iommu/amd: Fix sleeping in atomic in increase_address_space() gregkh
2021-03-10 13:24 ` [PATCH 4.19 26/39] mwifiex: pcie: skip cancel_work_sync() on reset failure path gregkh
2021-03-10 13:24 ` [PATCH 4.19 27/39] platform/x86: acer-wmi: Cleanup ACER_CAP_FOO defines gregkh
2021-03-10 13:24 ` [PATCH 4.19 28/39] platform/x86: acer-wmi: Cleanup accelerometer device handling gregkh
2021-03-10 13:24 ` [PATCH 4.19 29/39] platform/x86: acer-wmi: Add new force_caps module parameter gregkh
2021-03-10 13:24 ` [PATCH 4.19 30/39] platform/x86: acer-wmi: Add ACER_CAP_SET_FUNCTION_MODE capability flag gregkh
2021-03-10 13:24 ` [PATCH 4.19 31/39] platform/x86: acer-wmi: Add support for SW_TABLET_MODE on Switch devices gregkh
2021-03-10 13:24 ` [PATCH 4.19 32/39] platform/x86: acer-wmi: Add ACER_CAP_KBD_DOCK quirk for the Aspire Switch 10E SW3-016 gregkh
2021-03-10 13:24 ` [PATCH 4.19 33/39] HID: mf: add support for 0079:1846 Mayflash/Dragonrise USB Gamecube Adapter gregkh
2021-03-10 13:24 ` [PATCH 4.19 34/39] media: cx23885: add more quirks for reset DMA on some AMD IOMMU gregkh
2021-03-10 13:24 ` [PATCH 4.19 35/39] ASoC: Intel: bytcr_rt5640: Add quirk for ARCHOS Cesium 140 gregkh
2021-03-10 13:24 ` [PATCH 4.19 36/39] PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller gregkh
2021-03-10 13:24 ` [PATCH 4.19 37/39] misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eeprom gregkh
2021-03-10 13:24 ` [PATCH 4.19 38/39] drm/msm/a5xx: Remove overwriting A5XX_PC_DBG_ECO_CNTL register gregkh
2021-03-10 13:24 ` [PATCH 4.19 39/39] mmc: sdhci-of-dwcmshc: set SDHCI_QUIRK2_PRESET_VALUE_BROKEN gregkh
2021-03-10 20:22 ` [PATCH 4.19 00/39] 4.19.180-rc1 review Pavel Machek
2021-03-10 22:01 ` Shuah Khan
2021-03-10 23:51 ` Guenter Roeck
2021-03-11 2:39 ` Samuel Zou
2021-03-11 4:04 ` Ross Schmidt
2021-03-11 7:47 ` Naresh Kamboju
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