f2fs: expose features to sysfs entry
This patch exposes what features are supported by current f2fs build to sysfs entry via: /sys/fs/f2fs/features/ /sys/fs/f2fs/dev/features Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
parent
704956ecf5
commit
bf9e697ecd
1 changed files with 130 additions and 26 deletions
156
fs/f2fs/sysfs.c
156
fs/f2fs/sysfs.c
|
|
@ -18,7 +18,6 @@
|
|||
#include "gc.h"
|
||||
|
||||
static struct proc_dir_entry *f2fs_proc_root;
|
||||
static struct kset *f2fs_kset;
|
||||
|
||||
/* Sysfs support for f2fs */
|
||||
enum {
|
||||
|
|
@ -41,6 +40,7 @@ struct f2fs_attr {
|
|||
const char *, size_t);
|
||||
int struct_type;
|
||||
int offset;
|
||||
int id;
|
||||
};
|
||||
|
||||
static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
|
||||
|
|
@ -76,6 +76,34 @@ static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
|
|||
BD_PART_WRITTEN(sbi)));
|
||||
}
|
||||
|
||||
static ssize_t features_show(struct f2fs_attr *a,
|
||||
struct f2fs_sb_info *sbi, char *buf)
|
||||
{
|
||||
struct super_block *sb = sbi->sb;
|
||||
int len = 0;
|
||||
|
||||
if (!sb->s_bdev->bd_part)
|
||||
return snprintf(buf, PAGE_SIZE, "0\n");
|
||||
|
||||
if (f2fs_sb_has_crypto(sb))
|
||||
len += snprintf(buf, PAGE_SIZE - len, "%s",
|
||||
"encryption");
|
||||
if (f2fs_sb_mounted_blkzoned(sb))
|
||||
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
|
||||
len ? ", " : "", "blkzoned");
|
||||
if (f2fs_sb_has_extra_attr(sb))
|
||||
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
|
||||
len ? ", " : "", "extra_attr");
|
||||
if (f2fs_sb_has_project_quota(sb))
|
||||
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
|
||||
len ? ", " : "", "projquota");
|
||||
if (f2fs_sb_has_inode_chksum(sb))
|
||||
len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
|
||||
len ? ", " : "", "inode_checksum");
|
||||
len += snprintf(buf + len, PAGE_SIZE - len, "\n");
|
||||
return len;
|
||||
}
|
||||
|
||||
static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
|
||||
struct f2fs_sb_info *sbi, char *buf)
|
||||
{
|
||||
|
|
@ -155,6 +183,30 @@ 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,
|
||||
};
|
||||
|
||||
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:
|
||||
return snprintf(buf, PAGE_SIZE, "supported\n");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
|
||||
static struct f2fs_attr f2fs_attr_##_name = { \
|
||||
.attr = {.name = __stringify(_name), .mode = _mode }, \
|
||||
|
|
@ -172,6 +224,13 @@ 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, \
|
||||
}
|
||||
|
||||
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
|
||||
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
|
||||
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
|
||||
|
|
@ -196,6 +255,18 @@ F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
|
|||
F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
|
||||
#endif
|
||||
F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
|
||||
F2FS_GENERAL_RO_ATTR(features);
|
||||
|
||||
#ifdef CONFIG_F2FS_FS_ENCRYPTION
|
||||
F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
|
||||
#endif
|
||||
#ifdef CONFIG_BLK_DEV_ZONED
|
||||
F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
|
||||
#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);
|
||||
|
||||
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
|
||||
static struct attribute *f2fs_attrs[] = {
|
||||
|
|
@ -222,21 +293,53 @@ static struct attribute *f2fs_attrs[] = {
|
|||
ATTR_LIST(inject_type),
|
||||
#endif
|
||||
ATTR_LIST(lifetime_write_kbytes),
|
||||
ATTR_LIST(features),
|
||||
ATTR_LIST(reserved_blocks),
|
||||
NULL,
|
||||
};
|
||||
|
||||
static struct attribute *f2fs_feat_attrs[] = {
|
||||
#ifdef CONFIG_F2FS_FS_ENCRYPTION
|
||||
ATTR_LIST(encryption),
|
||||
#endif
|
||||
#ifdef CONFIG_BLK_DEV_ZONED
|
||||
ATTR_LIST(block_zoned),
|
||||
#endif
|
||||
ATTR_LIST(atomic_write),
|
||||
ATTR_LIST(extra_attr),
|
||||
ATTR_LIST(project_quota),
|
||||
ATTR_LIST(inode_checksum),
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct sysfs_ops f2fs_attr_ops = {
|
||||
.show = f2fs_attr_show,
|
||||
.store = f2fs_attr_store,
|
||||
};
|
||||
|
||||
static struct kobj_type f2fs_ktype = {
|
||||
static struct kobj_type f2fs_sb_ktype = {
|
||||
.default_attrs = f2fs_attrs,
|
||||
.sysfs_ops = &f2fs_attr_ops,
|
||||
.release = f2fs_sb_release,
|
||||
};
|
||||
|
||||
static struct kobj_type f2fs_ktype = {
|
||||
.sysfs_ops = &f2fs_attr_ops,
|
||||
};
|
||||
|
||||
static struct kset f2fs_kset = {
|
||||
.kobj = {.ktype = &f2fs_ktype},
|
||||
};
|
||||
|
||||
static struct kobj_type f2fs_feat_ktype = {
|
||||
.default_attrs = f2fs_feat_attrs,
|
||||
.sysfs_ops = &f2fs_attr_ops,
|
||||
};
|
||||
|
||||
static struct kobject f2fs_feat = {
|
||||
.kset = &f2fs_kset,
|
||||
};
|
||||
|
||||
static int segment_info_seq_show(struct seq_file *seq, void *offset)
|
||||
{
|
||||
struct super_block *sb = seq->private;
|
||||
|
|
@ -306,18 +409,29 @@ F2FS_PROC_FILE_DEF(segment_bits);
|
|||
|
||||
int __init f2fs_init_sysfs(void)
|
||||
{
|
||||
f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
|
||||
int ret;
|
||||
|
||||
f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj);
|
||||
if (!f2fs_kset)
|
||||
return -ENOMEM;
|
||||
return 0;
|
||||
kobject_set_name(&f2fs_kset.kobj, "f2fs");
|
||||
f2fs_kset.kobj.parent = fs_kobj;
|
||||
ret = kset_register(&f2fs_kset);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
|
||||
NULL, "features");
|
||||
if (ret)
|
||||
kset_unregister(&f2fs_kset);
|
||||
else
|
||||
f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
|
||||
return ret;
|
||||
}
|
||||
|
||||
void f2fs_exit_sysfs(void)
|
||||
{
|
||||
kset_unregister(f2fs_kset);
|
||||
kobject_put(&f2fs_feat);
|
||||
kset_unregister(&f2fs_kset);
|
||||
remove_proc_entry("fs/f2fs", NULL);
|
||||
f2fs_proc_root = NULL;
|
||||
}
|
||||
|
||||
int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
|
||||
|
|
@ -325,6 +439,13 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
|
|||
struct super_block *sb = sbi->sb;
|
||||
int err;
|
||||
|
||||
sbi->s_kobj.kset = &f2fs_kset;
|
||||
init_completion(&sbi->s_kobj_unregister);
|
||||
err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
|
||||
"%s", sb->s_id);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (f2fs_proc_root)
|
||||
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
|
||||
|
||||
|
|
@ -334,32 +455,15 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
|
|||
proc_create_data("segment_bits", S_IRUGO, sbi->s_proc,
|
||||
&f2fs_seq_segment_bits_fops, sb);
|
||||
}
|
||||
|
||||
sbi->s_kobj.kset = f2fs_kset;
|
||||
init_completion(&sbi->s_kobj_unregister);
|
||||
err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL,
|
||||
"%s", sb->s_id);
|
||||
if (err)
|
||||
goto err_out;
|
||||
return 0;
|
||||
err_out:
|
||||
if (sbi->s_proc) {
|
||||
remove_proc_entry("segment_info", sbi->s_proc);
|
||||
remove_proc_entry("segment_bits", sbi->s_proc);
|
||||
remove_proc_entry(sb->s_id, f2fs_proc_root);
|
||||
}
|
||||
return err;
|
||||
}
|
||||
|
||||
void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
|
||||
{
|
||||
kobject_del(&sbi->s_kobj);
|
||||
kobject_put(&sbi->s_kobj);
|
||||
wait_for_completion(&sbi->s_kobj_unregister);
|
||||
|
||||
if (sbi->s_proc) {
|
||||
remove_proc_entry("segment_info", sbi->s_proc);
|
||||
remove_proc_entry("segment_bits", sbi->s_proc);
|
||||
remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
|
||||
}
|
||||
kobject_del(&sbi->s_kobj);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue