iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rnbd: port block device access to file

Browse Source 
Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-10-adbd023e19cc@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2024-01-23 14:26:27 +01:00
parent 05fb1dbc82
commit a34606a9aa
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/block/rnbd/rnbd-srv.c
View File

@ -145,7 +145,7 @@ static int process_rdma(struct rnbd_srv_session *srv_sess,
priv->sess_dev = sess_dev;
priv->id = id;
bio = bio_alloc(sess_dev->bdev_handle->bdev, 1,
bio = bio_alloc(file_bdev(sess_dev->bdev_file), 1,
rnbd_to_bio_flags(le32_to_cpu(msg->rw)), GFP_KERNEL);
if (bio_add_page(bio, virt_to_page(data), datalen,
offset_in_page(data)) != datalen) {
@ -219,7 +219,7 @@ void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id)
rnbd_put_sess_dev(sess_dev);
wait_for_completion(&dc); /* wait for inflights to drop to zero */
bdev_release(sess_dev->bdev_handle);
fput(sess_dev->bdev_file);
mutex_lock(&sess_dev->dev->lock);
list_del(&sess_dev->dev_list);
if (!sess_dev->readonly)
@ -534,7 +534,7 @@ rnbd_srv_get_or_create_srv_dev(struct block_device *bdev,
static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
struct rnbd_srv_sess_dev *sess_dev)
{
struct block_device *bdev = sess_dev->bdev_handle->bdev;
struct block_device *bdev = file_bdev(sess_dev->bdev_file);
rsp->hdr.type = cpu_to_le16(RNBD_MSG_OPEN_RSP);
rsp->device_id = cpu_to_le32(sess_dev->device_id);
@ -560,7 +560,7 @@ static void rnbd_srv_fill_msg_open_rsp(struct rnbd_msg_open_rsp *rsp,
static struct rnbd_srv_sess_dev *
rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess,
const struct rnbd_msg_open *open_msg,
struct bdev_handle *handle, bool readonly,
struct file *bdev_file, bool readonly,
struct rnbd_srv_dev *srv_dev)
{
struct rnbd_srv_sess_dev *sdev = rnbd_sess_dev_alloc(srv_sess);
@ -572,7 +572,7 @@ rnbd_srv_create_set_sess_dev(struct rnbd_srv_session *srv_sess,
strscpy(sdev->pathname, open_msg->dev_name, sizeof(sdev->pathname));
sdev->bdev_handle = handle;
sdev->bdev_file = bdev_file;
sdev->sess = srv_sess;
sdev->dev = srv_dev;
sdev->readonly = readonly;
@ -678,7 +678,7 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
struct rnbd_srv_dev *srv_dev;
struct rnbd_srv_sess_dev *srv_sess_dev;
const struct rnbd_msg_open *open_msg = msg;
struct bdev_handle *bdev_handle;
struct file *bdev_file;
blk_mode_t open_flags = BLK_OPEN_READ;
char *full_path;
struct rnbd_msg_open_rsp *rsp = data;
@ -716,15 +716,15 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
goto reject;
}
bdev_handle = bdev_open_by_path(full_path, open_flags, NULL, NULL);
if (IS_ERR(bdev_handle)) {
ret = PTR_ERR(bdev_handle);
bdev_file = bdev_file_open_by_path(full_path, open_flags, NULL, NULL);
if (IS_ERR(bdev_file)) {
ret = PTR_ERR(bdev_file);
pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %pe\n",
full_path, srv_sess->sessname, bdev_handle);
full_path, srv_sess->sessname, bdev_file);
goto free_path;
}
srv_dev = rnbd_srv_get_or_create_srv_dev(bdev_handle->bdev, srv_sess,
srv_dev = rnbd_srv_get_or_create_srv_dev(file_bdev(bdev_file), srv_sess,
open_msg->access_mode);
if (IS_ERR(srv_dev)) {
pr_err("Opening device '%s' on session %s failed, creating srv_dev failed, err: %pe\n",
@ -734,7 +734,7 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
}
srv_sess_dev = rnbd_srv_create_set_sess_dev(srv_sess, open_msg,
bdev_handle,
bdev_file,
open_msg->access_mode == RNBD_ACCESS_RO,
srv_dev);
if (IS_ERR(srv_sess_dev)) {
@ -750,7 +750,7 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess,
*/
mutex_lock(&srv_dev->lock);
if (!srv_dev->dev_kobj.state_in_sysfs) {
ret = rnbd_srv_create_dev_sysfs(srv_dev, bdev_handle->bdev);
ret = rnbd_srv_create_dev_sysfs(srv_dev, file_bdev(bdev_file));
if (ret) {
mutex_unlock(&srv_dev->lock);
rnbd_srv_err(srv_sess_dev,
@ -793,7 +793,7 @@ srv_dev_put:
}
rnbd_put_srv_dev(srv_dev);
blkdev_put:
bdev_release(bdev_handle);
fput(bdev_file);
free_path:
kfree(full_path);
reject:

2
drivers/block/rnbd/rnbd-srv.h
View File

@ -46,7 +46,7 @@ struct rnbd_srv_dev {
struct rnbd_srv_sess_dev {
/* Entry inside rnbd_srv_dev struct */
struct list_head dev_list;
struct bdev_handle *bdev_handle;
struct file *bdev_file;
struct rnbd_srv_session *sess;
struct rnbd_srv_dev *dev;
struct kobject kobj;