summaryrefslogtreecommitdiff
path: root/fs/btrfs/sysfs.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/sysfs.c')
-rw-r--r--fs/btrfs/sysfs.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index f6d3c80f2e28..5ebbe8a5ee76 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -9,6 +9,7 @@
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/bug.h>
+#include <crypto/hash.h>
#include "ctree.h"
#include "disk-io.h"
@@ -258,6 +259,7 @@ BTRFS_FEAT_ATTR_INCOMPAT(skinny_metadata, SKINNY_METADATA);
BTRFS_FEAT_ATTR_INCOMPAT(no_holes, NO_HOLES);
BTRFS_FEAT_ATTR_INCOMPAT(metadata_uuid, METADATA_UUID);
BTRFS_FEAT_ATTR_COMPAT_RO(free_space_tree, FREE_SPACE_TREE);
+BTRFS_FEAT_ATTR_INCOMPAT(raid1c34, RAID1C34);
static struct attribute *btrfs_supported_feature_attrs[] = {
BTRFS_FEAT_ATTR_PTR(mixed_backref),
@@ -272,6 +274,7 @@ static struct attribute *btrfs_supported_feature_attrs[] = {
BTRFS_FEAT_ATTR_PTR(no_holes),
BTRFS_FEAT_ATTR_PTR(metadata_uuid),
BTRFS_FEAT_ATTR_PTR(free_space_tree),
+ BTRFS_FEAT_ATTR_PTR(raid1c34),
NULL
};
@@ -295,8 +298,30 @@ static ssize_t rmdir_subvol_show(struct kobject *kobj,
}
BTRFS_ATTR(static_feature, rmdir_subvol, rmdir_subvol_show);
+static ssize_t supported_checksums_show(struct kobject *kobj,
+ struct kobj_attribute *a, char *buf)
+{
+ ssize_t ret = 0;
+ int i;
+
+ for (i = 0; i < btrfs_get_num_csums(); i++) {
+ /*
+ * This "trick" only works as long as 'enum btrfs_csum_type' has
+ * no holes in it
+ */
+ ret += snprintf(buf + ret, PAGE_SIZE - ret, "%s%s",
+ (i == 0 ? "" : " "), btrfs_super_csum_name(i));
+
+ }
+
+ ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
+ return ret;
+}
+BTRFS_ATTR(static_feature, supported_checksums, supported_checksums_show);
+
static struct attribute *btrfs_supported_static_feature_attrs[] = {
BTRFS_ATTR_PTR(static_feature, rmdir_subvol),
+ BTRFS_ATTR_PTR(static_feature, supported_checksums),
NULL
};
@@ -372,16 +397,16 @@ static ssize_t raid_bytes_show(struct kobject *kobj,
{
struct btrfs_space_info *sinfo = to_space_info(kobj->parent);
- struct btrfs_block_group_cache *block_group;
+ struct btrfs_block_group *block_group;
int index = btrfs_bg_flags_to_raid_index(to_raid_kobj(kobj)->flags);
u64 val = 0;
down_read(&sinfo->groups_sem);
list_for_each_entry(block_group, &sinfo->block_groups[index], list) {
if (&attr->attr == BTRFS_ATTR_PTR(raid, total_bytes))
- val += block_group->key.offset;
+ val += block_group->length;
else
- val += btrfs_block_group_used(&block_group->item);
+ val += block_group->used;
}
up_read(&sinfo->groups_sem);
return snprintf(buf, PAGE_SIZE, "%llu\n", val);
@@ -604,6 +629,19 @@ static ssize_t btrfs_metadata_uuid_show(struct kobject *kobj,
BTRFS_ATTR(, metadata_uuid, btrfs_metadata_uuid_show);
+static ssize_t btrfs_checksum_show(struct kobject *kobj,
+ struct kobj_attribute *a, char *buf)
+{
+ struct btrfs_fs_info *fs_info = to_fs_info(kobj);
+ u16 csum_type = btrfs_super_csum_type(fs_info->super_copy);
+
+ return snprintf(buf, PAGE_SIZE, "%s (%s)\n",
+ btrfs_super_csum_name(csum_type),
+ crypto_shash_driver_name(fs_info->csum_shash));
+}
+
+BTRFS_ATTR(, checksum, btrfs_checksum_show);
+
static const struct attribute *btrfs_attrs[] = {
BTRFS_ATTR_PTR(, label),
BTRFS_ATTR_PTR(, nodesize),
@@ -611,6 +649,7 @@ static const struct attribute *btrfs_attrs[] = {
BTRFS_ATTR_PTR(, clone_alignment),
BTRFS_ATTR_PTR(, quota_override),
BTRFS_ATTR_PTR(, metadata_uuid),
+ BTRFS_ATTR_PTR(, checksum),
NULL,
};
@@ -822,7 +861,7 @@ static void init_feature_attrs(void)
* Create a sysfs entry for a given block group type at path
* /sys/fs/btrfs/UUID/allocation/data/TYPE
*/
-void btrfs_sysfs_add_block_group_type(struct btrfs_block_group_cache *cache)
+void btrfs_sysfs_add_block_group_type(struct btrfs_block_group *cache)
{
struct btrfs_fs_info *fs_info = cache->fs_info;
struct btrfs_space_info *space_info = cache->space_info;