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Diffstat (limited to 'fs/f2fs/sysfs.c')
-rw-r--r--fs/f2fs/sysfs.c232
1 files changed, 174 insertions, 58 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 39b522ec73e7..6642246206bd 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -37,6 +37,7 @@ enum {
#endif
RESERVED_BLOCKS, /* struct f2fs_sb_info */
CPRC_INFO, /* struct ckpt_req_control */
+ ATGC_INFO, /* struct atgc_management */
};
struct f2fs_attr {
@@ -75,6 +76,8 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
#endif
else if (struct_type == CPRC_INFO)
return (unsigned char *)&sbi->cprc_info;
+ else if (struct_type == ATGC_INFO)
+ return (unsigned char *)&sbi->am;
return NULL;
}
@@ -155,6 +158,9 @@ static ssize_t features_show(struct f2fs_attr *a,
if (f2fs_sb_has_casefold(sbi))
len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "casefold");
+ if (f2fs_sb_has_readonly(sbi))
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
+ len ? ", " : "", "readonly");
if (f2fs_sb_has_compression(sbi))
len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
len ? ", " : "", "compression");
@@ -495,6 +501,20 @@ out:
}
#endif
+ if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
+ if (t > 100)
+ return -EINVAL;
+ sbi->am.candidate_ratio = t;
+ return count;
+ }
+
+ if (!strcmp(a->attr.name, "atgc_age_weight")) {
+ if (t > 100)
+ return -EINVAL;
+ sbi->am.age_weight = t;
+ return count;
+ }
+
*ui = (unsigned int)t;
return count;
@@ -546,46 +566,49 @@ static void f2fs_sb_release(struct kobject *kobj)
complete(&sbi->s_kobj_unregister);
}
-enum feat_id {
- FEAT_CRYPTO = 0,
- FEAT_BLKZONED,
- FEAT_ATOMIC_WRITE,
- FEAT_EXTRA_ATTR,
- FEAT_PROJECT_QUOTA,
- FEAT_INODE_CHECKSUM,
- FEAT_FLEXIBLE_INLINE_XATTR,
- FEAT_QUOTA_INO,
- FEAT_INODE_CRTIME,
- FEAT_LOST_FOUND,
- FEAT_VERITY,
- FEAT_SB_CHECKSUM,
- FEAT_CASEFOLD,
- FEAT_COMPRESSION,
- FEAT_TEST_DUMMY_ENCRYPTION_V2,
-};
-
+/*
+ * Note that there are three feature list entries:
+ * 1) /sys/fs/f2fs/features
+ * : shows runtime features supported by in-kernel f2fs along with Kconfig.
+ * - ref. F2FS_FEATURE_RO_ATTR()
+ *
+ * 2) /sys/fs/f2fs/$s_id/features <deprecated>
+ * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
+ * won't add new feature anymore, and thus, users should check entries in 3)
+ * instead of this 2).
+ *
+ * 3) /sys/fs/f2fs/$s_id/feature_list
+ * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
+ * sysfs entry rule where each entry should expose single value.
+ * This list covers old feature list provided by 2) and beyond. Therefore,
+ * please add new on-disk feature in this list only.
+ * - ref. F2FS_SB_FEATURE_RO_ATTR()
+ */
static ssize_t f2fs_feature_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
- switch (a->id) {
- case FEAT_CRYPTO:
- case FEAT_BLKZONED:
- case FEAT_ATOMIC_WRITE:
- case FEAT_EXTRA_ATTR:
- case FEAT_PROJECT_QUOTA:
- case FEAT_INODE_CHECKSUM:
- case FEAT_FLEXIBLE_INLINE_XATTR:
- case FEAT_QUOTA_INO:
- case FEAT_INODE_CRTIME:
- case FEAT_LOST_FOUND:
- case FEAT_VERITY:
- case FEAT_SB_CHECKSUM:
- case FEAT_CASEFOLD:
- case FEAT_COMPRESSION:
- case FEAT_TEST_DUMMY_ENCRYPTION_V2:
+ return sprintf(buf, "supported\n");
+}
+
+#define F2FS_FEATURE_RO_ATTR(_name) \
+static struct f2fs_attr f2fs_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = 0444 }, \
+ .show = f2fs_feature_show, \
+}
+
+static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ if (F2FS_HAS_FEATURE(sbi, a->id))
return sprintf(buf, "supported\n");
- }
- return 0;
+ return sprintf(buf, "unsupported\n");
+}
+
+#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
+static struct f2fs_attr f2fs_attr_sb_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = 0444 }, \
+ .show = f2fs_sb_feature_show, \
+ .id = F2FS_FEATURE_##_feat, \
}
#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
@@ -605,13 +628,6 @@ static struct f2fs_attr f2fs_attr_##_name = { \
#define F2FS_GENERAL_RO_ATTR(name) \
static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
-#define F2FS_FEATURE_RO_ATTR(_name, _id) \
-static struct f2fs_attr f2fs_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = 0444 }, \
- .show = f2fs_feature_show, \
- .id = _id, \
-}
-
#define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \
static struct f2fs_attr f2fs_attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = 0444 }, \
@@ -685,31 +701,44 @@ F2FS_GENERAL_RO_ATTR(avg_vblocks);
#endif
#ifdef CONFIG_FS_ENCRYPTION
-F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
-F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2, FEAT_TEST_DUMMY_ENCRYPTION_V2);
+F2FS_FEATURE_RO_ATTR(encryption);
+F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
+#ifdef CONFIG_UNICODE
+F2FS_FEATURE_RO_ATTR(encrypted_casefold);
#endif
+#endif /* CONFIG_FS_ENCRYPTION */
#ifdef CONFIG_BLK_DEV_ZONED
-F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
+F2FS_FEATURE_RO_ATTR(block_zoned);
#endif
-F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
-F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
-F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
-F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
-F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
-F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
-F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
-F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
+F2FS_FEATURE_RO_ATTR(atomic_write);
+F2FS_FEATURE_RO_ATTR(extra_attr);
+F2FS_FEATURE_RO_ATTR(project_quota);
+F2FS_FEATURE_RO_ATTR(inode_checksum);
+F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
+F2FS_FEATURE_RO_ATTR(quota_ino);
+F2FS_FEATURE_RO_ATTR(inode_crtime);
+F2FS_FEATURE_RO_ATTR(lost_found);
#ifdef CONFIG_FS_VERITY
-F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
+F2FS_FEATURE_RO_ATTR(verity);
#endif
-F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
-F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
+F2FS_FEATURE_RO_ATTR(sb_checksum);
+#ifdef CONFIG_UNICODE
+F2FS_FEATURE_RO_ATTR(casefold);
+#endif
+F2FS_FEATURE_RO_ATTR(readonly);
#ifdef CONFIG_F2FS_FS_COMPRESSION
-F2FS_FEATURE_RO_ATTR(compression, FEAT_COMPRESSION);
+F2FS_FEATURE_RO_ATTR(compression);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_saved_block, compr_saved_block);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_new_inode, compr_new_inode);
#endif
+F2FS_FEATURE_RO_ATTR(pin_file);
+
+/* For ATGC */
+F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_ratio, candidate_ratio);
+F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_count, max_candidate_count);
+F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_weight, age_weight);
+F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_threshold, age_threshold);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@@ -778,6 +807,11 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(compr_saved_block),
ATTR_LIST(compr_new_inode),
#endif
+ /* For ATGC */
+ ATTR_LIST(atgc_candidate_ratio),
+ ATTR_LIST(atgc_candidate_count),
+ ATTR_LIST(atgc_age_weight),
+ ATTR_LIST(atgc_age_threshold),
NULL,
};
ATTRIBUTE_GROUPS(f2fs);
@@ -786,7 +820,10 @@ static struct attribute *f2fs_feat_attrs[] = {
#ifdef CONFIG_FS_ENCRYPTION
ATTR_LIST(encryption),
ATTR_LIST(test_dummy_encryption_v2),
+#ifdef CONFIG_UNICODE
+ ATTR_LIST(encrypted_casefold),
#endif
+#endif /* CONFIG_FS_ENCRYPTION */
#ifdef CONFIG_BLK_DEV_ZONED
ATTR_LIST(block_zoned),
#endif
@@ -802,10 +839,14 @@ static struct attribute *f2fs_feat_attrs[] = {
ATTR_LIST(verity),
#endif
ATTR_LIST(sb_checksum),
+#ifdef CONFIG_UNICODE
ATTR_LIST(casefold),
+#endif
+ ATTR_LIST(readonly),
#ifdef CONFIG_F2FS_FS_COMPRESSION
ATTR_LIST(compression),
#endif
+ ATTR_LIST(pin_file),
NULL,
};
ATTRIBUTE_GROUPS(f2fs_feat);
@@ -817,6 +858,40 @@ static struct attribute *f2fs_stat_attrs[] = {
};
ATTRIBUTE_GROUPS(f2fs_stat);
+F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
+F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
+F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
+F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
+F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
+F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
+F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
+F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
+F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
+F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
+F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
+F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
+F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
+F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
+
+static struct attribute *f2fs_sb_feat_attrs[] = {
+ ATTR_LIST(sb_encryption),
+ ATTR_LIST(sb_block_zoned),
+ ATTR_LIST(sb_extra_attr),
+ ATTR_LIST(sb_project_quota),
+ ATTR_LIST(sb_inode_checksum),
+ ATTR_LIST(sb_flexible_inline_xattr),
+ ATTR_LIST(sb_quota_ino),
+ ATTR_LIST(sb_inode_crtime),
+ ATTR_LIST(sb_lost_found),
+ ATTR_LIST(sb_verity),
+ ATTR_LIST(sb_sb_checksum),
+ ATTR_LIST(sb_casefold),
+ ATTR_LIST(sb_compression),
+ ATTR_LIST(sb_readonly),
+ NULL,
+};
+ATTRIBUTE_GROUPS(f2fs_sb_feat);
+
static const struct sysfs_ops f2fs_attr_ops = {
.show = f2fs_attr_show,
.store = f2fs_attr_store,
@@ -883,6 +958,33 @@ static struct kobj_type f2fs_stat_ktype = {
.release = f2fs_stat_kobj_release,
};
+static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
+ s_feature_list_kobj);
+ struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
+
+ return a->show ? a->show(a, sbi, buf) : 0;
+}
+
+static void f2fs_feature_list_kobj_release(struct kobject *kobj)
+{
+ struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
+ s_feature_list_kobj);
+ complete(&sbi->s_feature_list_kobj_unregister);
+}
+
+static const struct sysfs_ops f2fs_feature_list_attr_ops = {
+ .show = f2fs_sb_feat_attr_show,
+};
+
+static struct kobj_type f2fs_feature_list_ktype = {
+ .default_groups = f2fs_sb_feat_groups,
+ .sysfs_ops = &f2fs_feature_list_attr_ops,
+ .release = f2fs_feature_list_kobj_release,
+};
+
static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
void *offset)
{
@@ -1099,6 +1201,14 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
if (err)
goto put_stat_kobj;
+ sbi->s_feature_list_kobj.kset = &f2fs_kset;
+ init_completion(&sbi->s_feature_list_kobj_unregister);
+ err = kobject_init_and_add(&sbi->s_feature_list_kobj,
+ &f2fs_feature_list_ktype,
+ &sbi->s_kobj, "feature_list");
+ if (err)
+ goto put_feature_list_kobj;
+
if (f2fs_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
@@ -1113,6 +1223,9 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
victim_bits_seq_show, sb);
}
return 0;
+put_feature_list_kobj:
+ kobject_put(&sbi->s_feature_list_kobj);
+ wait_for_completion(&sbi->s_feature_list_kobj_unregister);
put_stat_kobj:
kobject_put(&sbi->s_stat_kobj);
wait_for_completion(&sbi->s_stat_kobj_unregister);
@@ -1135,6 +1248,9 @@ void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
kobject_del(&sbi->s_stat_kobj);
kobject_put(&sbi->s_stat_kobj);
wait_for_completion(&sbi->s_stat_kobj_unregister);
+ kobject_del(&sbi->s_feature_list_kobj);
+ kobject_put(&sbi->s_feature_list_kobj);
+ wait_for_completion(&sbi->s_feature_list_kobj_unregister);
kobject_del(&sbi->s_kobj);
kobject_put(&sbi->s_kobj);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.