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-rw-r--r--fs/btrfs/dev-replace.c8
-rw-r--r--fs/btrfs/ioctl.c12
-rw-r--r--fs/btrfs/super.c21
-rw-r--r--fs/btrfs/volumes.c59
-rw-r--r--fs/btrfs/volumes.h11
5 files changed, 50 insertions, 61 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 5e86bea0a950..5f10965fd72b 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -257,8 +257,8 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return -EINVAL;
}
- bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
- fs_info->bdev_holder);
+ bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
+ fs_info->bdev_holder, NULL);
if (IS_ERR(bdev)) {
btrfs_err(fs_info, "target device %s is invalid!", device_path);
return PTR_ERR(bdev);
@@ -315,7 +315,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
device->bdev = bdev;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->mode = FMODE_EXCL;
+ device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
device->fs_devices = fs_devices;
@@ -334,7 +334,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return 0;
error:
- blkdev_put(bdev, FMODE_EXCL);
+ blkdev_put(bdev, fs_info->bdev_holder);
return ret;
}
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index edbbd5cf23fc..a895d105464b 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2671,7 +2671,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args_v2 *vol_args;
struct block_device *bdev = NULL;
- fmode_t mode;
+ void *holder;
int ret;
bool cancel = false;
@@ -2708,7 +2708,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
goto err_drop;
/* Exclusive operation is now claimed */
- ret = btrfs_rm_device(fs_info, &args, &bdev, &mode);
+ ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
btrfs_exclop_finish(fs_info);
@@ -2723,7 +2723,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
err_drop:
mnt_drop_write_file(file);
if (bdev)
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, holder);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
@@ -2737,7 +2737,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args *vol_args;
struct block_device *bdev = NULL;
- fmode_t mode;
+ void *holder;
int ret;
bool cancel = false;
@@ -2764,7 +2764,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
ret = exclop_start_or_cancel_reloc(fs_info, BTRFS_EXCLOP_DEV_REMOVE,
cancel);
if (ret == 0) {
- ret = btrfs_rm_device(fs_info, &args, &bdev, &mode);
+ ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
if (!ret)
btrfs_info(fs_info, "disk deleted %s", vol_args->name);
btrfs_exclop_finish(fs_info);
@@ -2772,7 +2772,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
mnt_drop_write_file(file);
if (bdev)
- blkdev_put(bdev, mode);
+ blkdev_put(bdev, holder);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 8b1c1225245e..f1dd172d8d5b 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -849,8 +849,7 @@ out:
* All other options will be parsed on much later in the mount process and
* only when we need to allocate a new super block.
*/
-static int btrfs_parse_device_options(const char *options, fmode_t flags,
- void *holder)
+static int btrfs_parse_device_options(const char *options, blk_mode_t flags)
{
substring_t args[MAX_OPT_ARGS];
char *device_name, *opts, *orig, *p;
@@ -884,8 +883,7 @@ static int btrfs_parse_device_options(const char *options, fmode_t flags,
error = -ENOMEM;
goto out;
}
- device = btrfs_scan_one_device(device_name, flags,
- holder);
+ device = btrfs_scan_one_device(device_name, flags);
kfree(device_name);
if (IS_ERR(device)) {
error = PTR_ERR(device);
@@ -1442,12 +1440,9 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
struct btrfs_fs_devices *fs_devices = NULL;
struct btrfs_fs_info *fs_info = NULL;
void *new_sec_opts = NULL;
- fmode_t mode = FMODE_READ;
+ blk_mode_t mode = sb_open_mode(flags);
int error = 0;
- if (!(flags & SB_RDONLY))
- mode |= FMODE_WRITE;
-
if (data) {
error = security_sb_eat_lsm_opts(data, &new_sec_opts);
if (error)
@@ -1477,13 +1472,13 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
}
mutex_lock(&uuid_mutex);
- error = btrfs_parse_device_options(data, mode, fs_type);
+ error = btrfs_parse_device_options(data, mode);
if (error) {
mutex_unlock(&uuid_mutex);
goto error_fs_info;
}
- device = btrfs_scan_one_device(device_name, mode, fs_type);
+ device = btrfs_scan_one_device(device_name, mode);
if (IS_ERR(device)) {
mutex_unlock(&uuid_mutex);
error = PTR_ERR(device);
@@ -2195,8 +2190,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
switch (cmd) {
case BTRFS_IOC_SCAN_DEV:
mutex_lock(&uuid_mutex);
- device = btrfs_scan_one_device(vol->name, FMODE_READ,
- &btrfs_root_fs_type);
+ device = btrfs_scan_one_device(vol->name, BLK_OPEN_READ);
ret = PTR_ERR_OR_ZERO(device);
mutex_unlock(&uuid_mutex);
break;
@@ -2210,8 +2204,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
break;
case BTRFS_IOC_DEVICES_READY:
mutex_lock(&uuid_mutex);
- device = btrfs_scan_one_device(vol->name, FMODE_READ,
- &btrfs_root_fs_type);
+ device = btrfs_scan_one_device(vol->name, BLK_OPEN_READ);
if (IS_ERR(device)) {
mutex_unlock(&uuid_mutex);
ret = PTR_ERR(device);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 4193ace3fb5a..73f9ea7672db 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -510,13 +510,13 @@ static struct btrfs_fs_devices *find_fsid_with_metadata_uuid(
static int
-btrfs_get_bdev_and_sb(const char *device_path, fmode_t flags, void *holder,
+btrfs_get_bdev_and_sb(const char *device_path, blk_mode_t flags, void *holder,
int flush, struct block_device **bdev,
struct btrfs_super_block **disk_super)
{
int ret;
- *bdev = blkdev_get_by_path(device_path, flags, holder);
+ *bdev = blkdev_get_by_path(device_path, flags, holder, NULL);
if (IS_ERR(*bdev)) {
ret = PTR_ERR(*bdev);
@@ -527,14 +527,14 @@ btrfs_get_bdev_and_sb(const char *device_path, fmode_t flags, void *holder,
sync_blockdev(*bdev);
ret = set_blocksize(*bdev, BTRFS_BDEV_BLOCKSIZE);
if (ret) {
- blkdev_put(*bdev, flags);
+ blkdev_put(*bdev, holder);
goto error;
}
invalidate_bdev(*bdev);
*disk_super = btrfs_read_dev_super(*bdev);
if (IS_ERR(*disk_super)) {
ret = PTR_ERR(*disk_super);
- blkdev_put(*bdev, flags);
+ blkdev_put(*bdev, holder);
goto error;
}
@@ -610,7 +610,7 @@ static int btrfs_free_stale_devices(dev_t devt, struct btrfs_device *skip_device
* fs_devices->device_list_mutex here.
*/
static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
- struct btrfs_device *device, fmode_t flags,
+ struct btrfs_device *device, blk_mode_t flags,
void *holder)
{
struct block_device *bdev;
@@ -662,7 +662,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
device->bdev = bdev;
clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
- device->mode = flags;
+ device->holder = holder;
fs_devices->open_devices++;
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
@@ -676,7 +676,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
error_free_page:
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, flags);
+ blkdev_put(bdev, holder);
return -EINVAL;
}
@@ -1067,7 +1067,7 @@ static void __btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices,
continue;
if (device->bdev) {
- blkdev_put(device->bdev, device->mode);
+ blkdev_put(device->bdev, device->holder);
device->bdev = NULL;
fs_devices->open_devices--;
}
@@ -1113,7 +1113,7 @@ static void btrfs_close_bdev(struct btrfs_device *device)
invalidate_bdev(device->bdev);
}
- blkdev_put(device->bdev, device->mode);
+ blkdev_put(device->bdev, device->holder);
}
static void btrfs_close_one_device(struct btrfs_device *device)
@@ -1217,14 +1217,12 @@ void btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
}
static int open_fs_devices(struct btrfs_fs_devices *fs_devices,
- fmode_t flags, void *holder)
+ blk_mode_t flags, void *holder)
{
struct btrfs_device *device;
struct btrfs_device *latest_dev = NULL;
struct btrfs_device *tmp_device;
- flags |= FMODE_EXCL;
-
list_for_each_entry_safe(device, tmp_device, &fs_devices->devices,
dev_list) {
int ret;
@@ -1267,7 +1265,7 @@ static int devid_cmp(void *priv, const struct list_head *a,
}
int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
- fmode_t flags, void *holder)
+ blk_mode_t flags, void *holder)
{
int ret;
@@ -1358,8 +1356,7 @@ int btrfs_forget_devices(dev_t devt)
* and we are not allowed to call set_blocksize during the scan. The superblock
* is read via pagecache
*/
-struct btrfs_device *btrfs_scan_one_device(const char *path, fmode_t flags,
- void *holder)
+struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
{
struct btrfs_super_block *disk_super;
bool new_device_added = false;
@@ -1378,16 +1375,16 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, fmode_t flags,
*/
/*
- * Avoid using flag |= FMODE_EXCL here, as the systemd-udev may
- * initiate the device scan which may race with the user's mount
- * or mkfs command, resulting in failure.
- * Since the device scan is solely for reading purposes, there is
- * no need for FMODE_EXCL. Additionally, the devices are read again
+ * Avoid an exclusive open here, as the systemd-udev may initiate the
+ * device scan which may race with the user's mount or mkfs command,
+ * resulting in failure.
+ * Since the device scan is solely for reading purposes, there is no
+ * need for an exclusive open. Additionally, the devices are read again
* during the mount process. It is ok to get some inconsistent
* values temporarily, as the device paths of the fsid are the only
* required information for assembling the volume.
*/
- bdev = blkdev_get_by_path(path, flags, holder);
+ bdev = blkdev_get_by_path(path, flags, NULL, NULL);
if (IS_ERR(bdev))
return ERR_CAST(bdev);
@@ -1411,7 +1408,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, fmode_t flags,
btrfs_release_disk_super(disk_super);
error_bdev_put:
- blkdev_put(bdev, flags);
+ blkdev_put(bdev, NULL);
return device;
}
@@ -2098,7 +2095,7 @@ void btrfs_scratch_superblocks(struct btrfs_fs_info *fs_info,
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, fmode_t *mode)
+ struct block_device **bdev, void **holder)
{
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
@@ -2237,7 +2234,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
}
*bdev = device->bdev;
- *mode = device->mode;
+ *holder = device->holder;
synchronize_rcu();
btrfs_free_device(device);
@@ -2391,7 +2388,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
return -ENOMEM;
}
- ret = btrfs_get_bdev_and_sb(path, FMODE_READ, fs_info->bdev_holder, 0,
+ ret = btrfs_get_bdev_and_sb(path, BLK_OPEN_READ, NULL, 0,
&bdev, &disk_super);
if (ret) {
btrfs_put_dev_args_from_path(args);
@@ -2405,7 +2402,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
else
memcpy(args->fsid, disk_super->fsid, BTRFS_FSID_SIZE);
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, FMODE_READ);
+ blkdev_put(bdev, NULL);
return 0;
}
@@ -2638,8 +2635,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
if (sb_rdonly(sb) && !fs_devices->seeding)
return -EROFS;
- bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
- fs_info->bdev_holder);
+ bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
+ fs_info->bdev_holder, NULL);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
@@ -2701,7 +2698,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
device->commit_total_bytes = device->total_bytes;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
clear_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->mode = FMODE_EXCL;
+ device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
@@ -2859,7 +2856,7 @@ error_free_zone:
error_free_device:
btrfs_free_device(device);
error:
- blkdev_put(bdev, FMODE_EXCL);
+ blkdev_put(bdev, fs_info->bdev_holder);
if (locked) {
mutex_unlock(&uuid_mutex);
up_write(&sb->s_umount);
@@ -6898,7 +6895,7 @@ static struct btrfs_fs_devices *open_seed_devices(struct btrfs_fs_info *fs_info,
if (IS_ERR(fs_devices))
return fs_devices;
- ret = open_fs_devices(fs_devices, FMODE_READ, fs_info->bdev_holder);
+ ret = open_fs_devices(fs_devices, BLK_OPEN_READ, fs_info->bdev_holder);
if (ret) {
free_fs_devices(fs_devices);
return ERR_PTR(ret);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index d44cb9d22d63..b8c51f16ba86 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -94,8 +94,8 @@ struct btrfs_device {
struct btrfs_zoned_device_info *zone_info;
- /* the mode sent to blkdev_get */
- fmode_t mode;
+ /* block device holder for blkdev_get/put */
+ void *holder;
/*
* Device's major-minor number. Must be set even if the device is not
@@ -610,9 +610,8 @@ struct btrfs_block_group *btrfs_create_chunk(struct btrfs_trans_handle *trans,
u64 type);
void btrfs_mapping_tree_free(struct extent_map_tree *tree);
int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
- fmode_t flags, void *holder);
-struct btrfs_device *btrfs_scan_one_device(const char *path,
- fmode_t flags, void *holder);
+ blk_mode_t flags, void *holder);
+struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags);
int btrfs_forget_devices(dev_t devt);
void btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
void btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices);
@@ -630,7 +629,7 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
void btrfs_put_dev_args_from_path(struct btrfs_dev_lookup_args *args);
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, fmode_t *mode);
+ struct block_device **bdev, void **holder);
void __exit btrfs_cleanup_fs_uuids(void);
int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
int btrfs_grow_device(struct btrfs_trans_handle *trans,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.