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-rw-r--r--fs/btrfs/ctree.h3
-rw-r--r--fs/btrfs/sysfs.c88
-rw-r--r--fs/btrfs/volumes.c3
-rw-r--r--fs/btrfs/volumes.h5
4 files changed, 56 insertions, 43 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6f364e1d8d3d..3335245f2636 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1619,10 +1619,7 @@ struct btrfs_fs_info {
struct task_struct *cleaner_kthread;
int thread_pool_size;
- struct kobject super_kobj;
struct kobject *space_info_kobj;
- struct kobject *device_dir_kobj;
- struct completion kobj_unregister;
int do_barriers;
int closing;
int log_root_recovering;
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index e71da324104a..f045c568b360 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -33,6 +33,7 @@
#include "volumes.h"
static inline struct btrfs_fs_info *to_fs_info(struct kobject *kobj);
+static inline struct btrfs_fs_devices *to_fs_devs(struct kobject *kobj);
static u64 get_features(struct btrfs_fs_info *fs_info,
enum btrfs_feature_set set)
@@ -438,10 +439,10 @@ static const struct attribute *btrfs_attrs[] = {
static void btrfs_release_super_kobj(struct kobject *kobj)
{
- struct btrfs_fs_info *fs_info = to_fs_info(kobj);
+ struct btrfs_fs_devices *fs_devs = to_fs_devs(kobj);
- memset(&fs_info->super_kobj, 0, sizeof(struct kobject));
- complete(&fs_info->kobj_unregister);
+ memset(&fs_devs->super_kobj, 0, sizeof(struct kobject));
+ complete(&fs_devs->kobj_unregister);
}
static struct kobj_type btrfs_ktype = {
@@ -449,11 +450,18 @@ static struct kobj_type btrfs_ktype = {
.release = btrfs_release_super_kobj,
};
+static inline struct btrfs_fs_devices *to_fs_devs(struct kobject *kobj)
+{
+ if (kobj->ktype != &btrfs_ktype)
+ return NULL;
+ return container_of(kobj, struct btrfs_fs_devices, super_kobj);
+}
+
static inline struct btrfs_fs_info *to_fs_info(struct kobject *kobj)
{
if (kobj->ktype != &btrfs_ktype)
return NULL;
- return container_of(kobj, struct btrfs_fs_info, super_kobj);
+ return to_fs_devs(kobj)->fs_info;
}
#define NUM_FEATURE_BITS 64
@@ -494,12 +502,12 @@ static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add)
attrs[0] = &fa->kobj_attr.attr;
if (add) {
int ret;
- ret = sysfs_merge_group(&fs_info->super_kobj,
+ ret = sysfs_merge_group(&fs_info->fs_devices->super_kobj,
&agroup);
if (ret)
return ret;
} else
- sysfs_unmerge_group(&fs_info->super_kobj,
+ sysfs_unmerge_group(&fs_info->fs_devices->super_kobj,
&agroup);
}
@@ -507,18 +515,17 @@ static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add)
return 0;
}
-static void btrfs_sysfs_remove_fsid(struct btrfs_fs_info *fs_info)
+static void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs)
{
- if (fs_info->device_dir_kobj) {
- btrfs_kobj_rm_device(fs_info, NULL);
- kobject_del(fs_info->device_dir_kobj);
- kobject_put(fs_info->device_dir_kobj);
- fs_info->device_dir_kobj = NULL;
+ if (fs_devs->device_dir_kobj) {
+ kobject_del(fs_devs->device_dir_kobj);
+ kobject_put(fs_devs->device_dir_kobj);
+ fs_devs->device_dir_kobj = NULL;
}
- kobject_del(&fs_info->super_kobj);
- kobject_put(&fs_info->super_kobj);
- wait_for_completion(&fs_info->kobj_unregister);
+ kobject_del(&fs_devs->super_kobj);
+ kobject_put(&fs_devs->super_kobj);
+ wait_for_completion(&fs_devs->kobj_unregister);
}
void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info)
@@ -529,9 +536,10 @@ void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info)
kobject_put(fs_info->space_info_kobj);
}
addrm_unknown_feature_attrs(fs_info, false);
- sysfs_remove_group(&fs_info->super_kobj, &btrfs_feature_attr_group);
- sysfs_remove_files(&fs_info->super_kobj, btrfs_attrs);
- btrfs_sysfs_remove_fsid(fs_info);
+ sysfs_remove_group(&fs_info->fs_devices->super_kobj, &btrfs_feature_attr_group);
+ sysfs_remove_files(&fs_info->fs_devices->super_kobj, btrfs_attrs);
+ btrfs_kobj_rm_device(fs_info, NULL);
+ btrfs_sysfs_remove_fsid(fs_info->fs_devices);
}
const char * const btrfs_feature_set_names[3] = {
@@ -617,14 +625,14 @@ int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info,
struct hd_struct *disk;
struct kobject *disk_kobj;
- if (!fs_info->device_dir_kobj)
+ if (!fs_info->fs_devices->device_dir_kobj)
return -EINVAL;
if (one_device && one_device->bdev) {
disk = one_device->bdev->bd_part;
disk_kobj = &part_to_dev(disk)->kobj;
- sysfs_remove_link(fs_info->device_dir_kobj,
+ sysfs_remove_link(fs_info->fs_devices->device_dir_kobj,
disk_kobj->name);
}
@@ -638,20 +646,20 @@ int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info,
disk = one_device->bdev->bd_part;
disk_kobj = &part_to_dev(disk)->kobj;
- sysfs_remove_link(fs_info->device_dir_kobj,
+ sysfs_remove_link(fs_info->fs_devices->device_dir_kobj,
disk_kobj->name);
}
return 0;
}
-int btrfs_sysfs_add_device(struct btrfs_fs_info *fs_info)
+int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs)
{
- if (!fs_info->device_dir_kobj)
- fs_info->device_dir_kobj = kobject_create_and_add("devices",
- &fs_info->super_kobj);
+ if (!fs_devs->device_dir_kobj)
+ fs_devs->device_dir_kobj = kobject_create_and_add("devices",
+ &fs_devs->super_kobj);
- if (!fs_info->device_dir_kobj)
+ if (!fs_devs->device_dir_kobj)
return -ENOMEM;
return 0;
@@ -664,7 +672,7 @@ int btrfs_kobj_add_device(struct btrfs_fs_info *fs_info,
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *dev;
- error = btrfs_sysfs_add_device(fs_info);
+ error = btrfs_sysfs_add_device(fs_devices);
if (error)
return error;
@@ -681,7 +689,7 @@ int btrfs_kobj_add_device(struct btrfs_fs_info *fs_info,
disk = dev->bdev->bd_part;
disk_kobj = &part_to_dev(disk)->kobj;
- error = sysfs_create_link(fs_info->device_dir_kobj,
+ error = sysfs_create_link(fs_devices->device_dir_kobj,
disk_kobj, disk_kobj->name);
if (error)
break;
@@ -703,39 +711,41 @@ u64 btrfs_debugfs_test;
* Can be called by the device discovery thread.
* And parent can be specified for seed device
*/
-int btrfs_sysfs_add_fsid(struct btrfs_fs_info *fs_info,
+static int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
struct kobject *parent)
{
int error;
- init_completion(&fs_info->kobj_unregister);
- fs_info->super_kobj.kset = btrfs_kset;
- error = kobject_init_and_add(&fs_info->super_kobj, &btrfs_ktype, NULL,
- "%pU", fs_info->fsid);
+ init_completion(&fs_devs->kobj_unregister);
+ fs_devs->super_kobj.kset = btrfs_kset;
+ error = kobject_init_and_add(&fs_devs->super_kobj, &btrfs_ktype, NULL,
+ "%pU", fs_devs->fsid);
return error;
}
int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info)
{
int error;
+ struct btrfs_fs_devices *fs_devs = fs_info->fs_devices;
+ struct kobject *super_kobj = &fs_devs->super_kobj;
- error = btrfs_sysfs_add_fsid(fs_info, NULL);
+ error = btrfs_sysfs_add_fsid(fs_devs, NULL);
if (error)
return error;
error = btrfs_kobj_add_device(fs_info, NULL);
if (error) {
- btrfs_sysfs_remove_fsid(fs_info);
+ btrfs_sysfs_remove_fsid(fs_devs);
return error;
}
- error = sysfs_create_files(&fs_info->super_kobj, btrfs_attrs);
+ error = sysfs_create_files(super_kobj, btrfs_attrs);
if (error) {
- btrfs_sysfs_remove_fsid(fs_info);
+ btrfs_sysfs_remove_fsid(fs_devs);
return error;
}
- error = sysfs_create_group(&fs_info->super_kobj,
+ error = sysfs_create_group(super_kobj,
&btrfs_feature_attr_group);
if (error)
goto failure;
@@ -745,7 +755,7 @@ int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info)
goto failure;
fs_info->space_info_kobj = kobject_create_and_add("allocation",
- &fs_info->super_kobj);
+ super_kobj);
if (!fs_info->space_info_kobj) {
error = -ENOMEM;
goto failure;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 174f5e1e00ab..39ff99e4b5a6 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2252,7 +2252,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
*/
snprintf(fsid_buf, BTRFS_UUID_UNPARSED_SIZE, "%pU",
root->fs_info->fsid);
- if (kobject_rename(&root->fs_info->super_kobj, fsid_buf))
+ if (kobject_rename(&root->fs_info->fs_devices->super_kobj,
+ fsid_buf))
goto error_trans;
}
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index ebc31331a837..e9780e9e6d97 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -253,6 +253,11 @@ struct btrfs_fs_devices {
* nonrot flag set
*/
int rotating;
+
+ /* sysfs kobjects */
+ struct kobject super_kobj;
+ struct kobject *device_dir_kobj;
+ struct completion kobj_unregister;
};
#define BTRFS_BIO_INLINE_CSUM_SIZE 64
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-20 23:11:54 +0000