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Diffstat (limited to 'fs/f2fs/super.c')
-rw-r--r--fs/f2fs/super.c143
1 files changed, 101 insertions, 42 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 13d0a0fe49dd..bafff72de8e8 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -43,7 +43,9 @@ enum {
Opt_disable_roll_forward,
Opt_discard,
Opt_noheap,
+ Opt_user_xattr,
Opt_nouser_xattr,
+ Opt_acl,
Opt_noacl,
Opt_active_logs,
Opt_disable_ext_identify,
@@ -56,7 +58,9 @@ static match_table_t f2fs_tokens = {
{Opt_disable_roll_forward, "disable_roll_forward"},
{Opt_discard, "discard"},
{Opt_noheap, "no_heap"},
+ {Opt_user_xattr, "user_xattr"},
{Opt_nouser_xattr, "nouser_xattr"},
+ {Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_active_logs, "active_logs=%u"},
{Opt_disable_ext_identify, "disable_ext_identify"},
@@ -65,24 +69,40 @@ static match_table_t f2fs_tokens = {
};
/* Sysfs support for f2fs */
+enum {
+ GC_THREAD, /* struct f2fs_gc_thread */
+ SM_INFO, /* struct f2fs_sm_info */
+};
+
struct f2fs_attr {
struct attribute attr;
ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
const char *, size_t);
+ int struct_type;
int offset;
};
+static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
+{
+ if (struct_type == GC_THREAD)
+ return (unsigned char *)sbi->gc_thread;
+ else if (struct_type == SM_INFO)
+ return (unsigned char *)SM_I(sbi);
+ return NULL;
+}
+
static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
- struct f2fs_gc_kthread *gc_kth = sbi->gc_thread;
+ unsigned char *ptr = NULL;
unsigned int *ui;
- if (!gc_kth)
+ ptr = __struct_ptr(sbi, a->struct_type);
+ if (!ptr)
return -EINVAL;
- ui = (unsigned int *)(((char *)gc_kth) + a->offset);
+ ui = (unsigned int *)(ptr + a->offset);
return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
}
@@ -91,15 +111,16 @@ static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
struct f2fs_sb_info *sbi,
const char *buf, size_t count)
{
- struct f2fs_gc_kthread *gc_kth = sbi->gc_thread;
+ unsigned char *ptr;
unsigned long t;
unsigned int *ui;
ssize_t ret;
- if (!gc_kth)
+ ptr = __struct_ptr(sbi, a->struct_type);
+ if (!ptr)
return -EINVAL;
- ui = (unsigned int *)(((char *)gc_kth) + a->offset);
+ ui = (unsigned int *)(ptr + a->offset);
ret = kstrtoul(skip_spaces(buf), 0, &t);
if (ret < 0)
@@ -135,21 +156,25 @@ static void f2fs_sb_release(struct kobject *kobj)
complete(&sbi->s_kobj_unregister);
}
-#define F2FS_ATTR_OFFSET(_name, _mode, _show, _store, _elname) \
+#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
static struct f2fs_attr f2fs_attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
- .offset = offsetof(struct f2fs_gc_kthread, _elname), \
+ .struct_type = _struct_type, \
+ .offset = _offset \
}
-#define F2FS_RW_ATTR(name, elname) \
- F2FS_ATTR_OFFSET(name, 0644, f2fs_sbi_show, f2fs_sbi_store, elname)
+#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
+ F2FS_ATTR_OFFSET(struct_type, name, 0644, \
+ f2fs_sbi_show, f2fs_sbi_store, \
+ offsetof(struct struct_name, elname))
-F2FS_RW_ATTR(gc_min_sleep_time, min_sleep_time);
-F2FS_RW_ATTR(gc_max_sleep_time, max_sleep_time);
-F2FS_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
-F2FS_RW_ATTR(gc_idle, gc_idle);
+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);
+F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle);
+F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@@ -157,6 +182,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(gc_max_sleep_time),
ATTR_LIST(gc_no_gc_sleep_time),
ATTR_LIST(gc_idle),
+ ATTR_LIST(reclaim_segments),
NULL,
};
@@ -237,6 +263,9 @@ static int parse_options(struct super_block *sb, char *options)
set_opt(sbi, NOHEAP);
break;
#ifdef CONFIG_F2FS_FS_XATTR
+ case Opt_user_xattr:
+ set_opt(sbi, XATTR_USER);
+ break;
case Opt_nouser_xattr:
clear_opt(sbi, XATTR_USER);
break;
@@ -244,6 +273,10 @@ static int parse_options(struct super_block *sb, char *options)
set_opt(sbi, INLINE_XATTR);
break;
#else
+ case Opt_user_xattr:
+ f2fs_msg(sb, KERN_INFO,
+ "user_xattr options not supported");
+ break;
case Opt_nouser_xattr:
f2fs_msg(sb, KERN_INFO,
"nouser_xattr options not supported");
@@ -254,10 +287,16 @@ static int parse_options(struct super_block *sb, char *options)
break;
#endif
#ifdef CONFIG_F2FS_FS_POSIX_ACL
+ case Opt_acl:
+ set_opt(sbi, POSIX_ACL);
+ break;
case Opt_noacl:
clear_opt(sbi, POSIX_ACL);
break;
#else
+ case Opt_acl:
+ f2fs_msg(sb, KERN_INFO, "acl options not supported");
+ break;
case Opt_noacl:
f2fs_msg(sb, KERN_INFO, "noacl options not supported");
break;
@@ -355,7 +394,9 @@ static void f2fs_put_super(struct super_block *sb)
f2fs_destroy_stats(sbi);
stop_gc_thread(sbi);
- write_checkpoint(sbi, true);
+ /* We don't need to do checkpoint when it's clean */
+ if (sbi->s_dirty && get_pages(sbi, F2FS_DIRTY_NODES))
+ write_checkpoint(sbi, true);
iput(sbi->node_inode);
iput(sbi->meta_inode);
@@ -727,30 +768,47 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
atomic_set(&sbi->nr_pages[i], 0);
}
-static int validate_superblock(struct super_block *sb,
- struct f2fs_super_block **raw_super,
- struct buffer_head **raw_super_buf, sector_t block)
+/*
+ * Read f2fs raw super block.
+ * Because we have two copies of super block, so read the first one at first,
+ * if the first one is invalid, move to read the second one.
+ */
+static int read_raw_super_block(struct super_block *sb,
+ struct f2fs_super_block **raw_super,
+ struct buffer_head **raw_super_buf)
{
- const char *super = (block == 0 ? "first" : "second");
+ int block = 0;
- /* read f2fs raw super block */
+retry:
*raw_super_buf = sb_bread(sb, block);
if (!*raw_super_buf) {
- f2fs_msg(sb, KERN_ERR, "unable to read %s superblock",
- super);
- return -EIO;
+ f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock",
+ block + 1);
+ if (block == 0) {
+ block++;
+ goto retry;
+ } else {
+ return -EIO;
+ }
}
*raw_super = (struct f2fs_super_block *)
((char *)(*raw_super_buf)->b_data + F2FS_SUPER_OFFSET);
/* sanity checking of raw super */
- if (!sanity_check_raw_super(sb, *raw_super))
- return 0;
+ if (sanity_check_raw_super(sb, *raw_super)) {
+ brelse(*raw_super_buf);
+ f2fs_msg(sb, KERN_ERR, "Can't find a valid F2FS filesystem "
+ "in %dth superblock", block + 1);
+ if(block == 0) {
+ block++;
+ goto retry;
+ } else {
+ return -EINVAL;
+ }
+ }
- f2fs_msg(sb, KERN_ERR, "Can't find a valid F2FS filesystem "
- "in %s superblock", super);
- return -EINVAL;
+ return 0;
}
static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
@@ -760,7 +818,6 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
struct buffer_head *raw_super_buf;
struct inode *root;
long err = -EINVAL;
- int i;
/* allocate memory for f2fs-specific super block info */
sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL);
@@ -773,14 +830,10 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
- err = validate_superblock(sb, &raw_super, &raw_super_buf, 0);
- if (err) {
- brelse(raw_super_buf);
- /* check secondary superblock when primary failed */
- err = validate_superblock(sb, &raw_super, &raw_super_buf, 1);
- if (err)
- goto free_sb_buf;
- }
+ err = read_raw_super_block(sb, &raw_super, &raw_super_buf);
+ if (err)
+ goto free_sbi;
+
sb->s_fs_info = sbi;
/* init some FS parameters */
sbi->active_logs = NR_CURSEG_TYPE;
@@ -818,12 +871,12 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
mutex_init(&sbi->gc_mutex);
mutex_init(&sbi->writepages);
mutex_init(&sbi->cp_mutex);
- for (i = 0; i < NR_GLOBAL_LOCKS; i++)
- mutex_init(&sbi->fs_lock[i]);
mutex_init(&sbi->node_write);
- sbi->por_doing = 0;
+ sbi->por_doing = false;
spin_lock_init(&sbi->stat_lock);
init_rwsem(&sbi->bio_sem);
+ init_rwsem(&sbi->cp_rwsem);
+ init_waitqueue_head(&sbi->cp_wait);
init_sb_info(sbi);
/* get an inode for meta space */
@@ -922,12 +975,12 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
/* After POR, we can run background GC thread.*/
err = start_gc_thread(sbi);
if (err)
- goto fail;
+ goto free_gc;
}
err = f2fs_build_stats(sbi);
if (err)
- goto fail;
+ goto free_gc;
if (f2fs_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
@@ -953,6 +1006,12 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
return 0;
fail:
+ if (sbi->s_proc) {
+ remove_proc_entry("segment_info", sbi->s_proc);
+ remove_proc_entry(sb->s_id, f2fs_proc_root);
+ }
+ f2fs_destroy_stats(sbi);
+free_gc:
stop_gc_thread(sbi);
free_root_inode:
dput(sb->s_root);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.