On 2019/5/31 0:06, Jaegeuk Kim wrote:
> On 05/24, sunqiuyang wrote:
>> From: Qiuyang Sun <sunqiuyang@xxxxxxxxxx>
>>
>> This ioctl shrinks a given length (aligned to sections) from end of the
>> main area. Any cursegs and valid blocks will be moved out before
>> invalidating the range.
>>
>> This feature can be used for adjusting partition sizes online.
>> --
>> Changlog v1 ==> v2:
>>
>> Sahitya Tummala:
>> - Add this ioctl for f2fs_compat_ioctl() as well.
>> - Fix debugfs status to reflect the online resize changes.
>> - Fix potential race between online resize path and allocate new data
>> block path or gc path.
>>
>> Others:
>> - Rename some identifiers.
>> - Add some error handling branches.
>> - Clear sbi->next_victim_seg[BG_GC/FG_GC] in shrinking range.
>> --
>> Changelog v2 ==> v3:
>> Implement this interface as ext4's, and change the parameter from shrunk
>> bytes to new block count of F2FS.
>> --
>> Changelog v3 ==> v4:
>> - During resizing, force to empty sit_journal and forbid adding new
>> entries to it, in order to avoid invalid segno in journal after resize.
>> - Reduce sbi->user_block_count before resize starts.
>> - Commit the updated superblock first, and then update in-memory metadata
>> only when the former succeeds.
>> - Target block count must align to sections.
>> --
>> Changelog v4 ==> v5:
>> Write checkpoint before and after committing the new superblock, w/o
>> CP_FSCK_FLAG respectively, so that the FS can be fixed by fsck even if
>> resize fails after the new superblock is committed.
>> --
>> Changelog v5 ==> v6:
>> - In free_segment_range(), reduce granularity of gc_mutex.
>> - Add protection on curseg migration.
>>
>> Signed-off-by: Qiuyang Sun <sunqiuyang@xxxxxxxxxx>
>> Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
>> Signed-off-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>
>> ---
>> fs/f2fs/checkpoint.c | 5 +-
>> fs/f2fs/debug.c | 7 +++
>> fs/f2fs/f2fs.h | 7 +++
>> fs/f2fs/file.c | 28 +++++++++++
>> fs/f2fs/gc.c | 134 ++++++++++++++++++++++++++++++++++++++++++++++++++-
>> fs/f2fs/segment.c | 54 +++++++++++++++++----
>> fs/f2fs/segment.h | 1 +
>> fs/f2fs/super.c | 4 ++
>> 8 files changed, 228 insertions(+), 12 deletions(-)
>>
>> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
>> index ed70b68..4706d0a 100644
>> --- a/fs/f2fs/checkpoint.c
>> +++ b/fs/f2fs/checkpoint.c
>> @@ -1313,8 +1313,11 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
>> else
>> __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
>>
>> - if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
>> + if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) ||
>> + is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
>> __set_ckpt_flags(ckpt, CP_FSCK_FLAG);
>> + else
>> + __clear_ckpt_flags(ckpt, CP_FSCK_FLAG);
>
> We don't need to clear this flag.
During resizefs, we may face inconsistent status of filesystem's on-disk data,
so I propose to use below flow, so once some thing breaks resizefs, fsck can
detect the corruption by the CP_FSCK_FLAG directly.
- resizefs()
- set SBI_IS_RESIZEFS
- do_checkpoint()
- if (is_resizing)
- set CP_FSCK_FLAG
- clear SBI_IS_RESIZEFS
- do_checkpoint()
- if (!is_resizing && not_need_fsck)
- clear CP_FSCK_FLAG
It's safe to clear CP_FSCK_FLAG if there is no resizing and corruption, as once
the inconsistency was detected we will keep SBI_NEED_FSCK in memory anyway, then
checkpoint can set CP_FSCK_FLAG again.
>
>>
>> if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
>> __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
>> diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
>> index 99e9a5c..7706049 100644
>> --- a/fs/f2fs/debug.c
>> +++ b/fs/f2fs/debug.c
>> @@ -27,8 +27,15 @@
>> static void update_general_status(struct f2fs_sb_info *sbi)
>> {
>> struct f2fs_stat_info *si = F2FS_STAT(sbi);
>> + struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
>> int i;
>>
>> + /* these will be changed if online resize is done */
>> + si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
>> + si->main_area_sections = le32_to_cpu(raw_super->section_count);
>> + si->main_area_zones = si->main_area_sections /
>> + le32_to_cpu(raw_super->secs_per_zone);
>> +
>> /* validation check of the segment numbers */
>> si->hit_largest = atomic64_read(&sbi->read_hit_largest);
>> si->hit_cached = atomic64_read(&sbi->read_hit_cached);
>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>> index a205d4d..345ccb0 100644
>> --- a/fs/f2fs/f2fs.h
>> +++ b/fs/f2fs/f2fs.h
>> @@ -423,6 +423,7 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal,
>> #define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
>> #define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
>> #define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15)
>> +#define F2FS_IOC_RESIZE_FS _IOW(F2FS_IOCTL_MAGIC, 16, __u64)
>>
>> #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
>> #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
>> @@ -1130,6 +1131,7 @@ enum {
>> SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */
>> SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */
>> SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */
>> + SBI_IS_RESIZEFS, /* resizefs is in process */
>> };
>>
>> enum {
>> @@ -1309,6 +1311,8 @@ struct f2fs_sb_info {
>> unsigned int segs_per_sec; /* segments per section */
>> unsigned int secs_per_zone; /* sections per zone */
>> unsigned int total_sections; /* total section count */
>> + unsigned int current_total_sections; /* for shrink resize */
>> + struct mutex resize_mutex; /* for resize exclusion */
>> unsigned int total_node_count; /* total node block count */
>> unsigned int total_valid_node_count; /* valid node block count */
>> loff_t max_file_blocks; /* max block index of file */
>> @@ -3175,6 +3179,8 @@ void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
>> int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
>> void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
>> int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
>> +void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
>> + unsigned int start, unsigned int end);
>> void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi);
>> int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
>> bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
>> @@ -3318,6 +3324,7 @@ int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
>> int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
>> unsigned int segno);
>> void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
>> +int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
>>
>> /*
>> * recovery.c
>> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
>> index d05ac21..6d00def 100644
>> --- a/fs/f2fs/file.c
>> +++ b/fs/f2fs/file.c
>> @@ -3013,6 +3013,31 @@ static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
>> return f2fs_precache_extents(file_inode(filp));
>> }
>>
>> +static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
>> +{
>> + struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
>> + __u64 block_count;
>> + int ret;
>> +
>> + if (!capable(CAP_SYS_ADMIN))
>> + return -EPERM;
>> +
>> + if (f2fs_readonly(sbi->sb))
>> + return -EROFS;
>> +
>> + if (get_user(block_count, (__u64 __user *)arg))
>> + return -EFAULT;
>> +
>> + ret = mnt_want_write_file(filp);
>> + if (ret)
>> + return ret;
>> +
>> + ret = f2fs_resize_fs(sbi, block_count);
>> + mnt_drop_write_file(filp);
>> +
>> + return ret;
>> +}
>> +
>> long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
>> {
>> if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
>> @@ -3069,6 +3094,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
>> return f2fs_ioc_set_pin_file(filp, arg);
>> case F2FS_IOC_PRECACHE_EXTENTS:
>> return f2fs_ioc_precache_extents(filp, arg);
>> + case F2FS_IOC_RESIZE_FS:
>> + return f2fs_ioc_resize_fs(filp, arg);
>> default:
>> return -ENOTTY;
>> }
>> @@ -3182,6 +3209,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
>> case F2FS_IOC_GET_PIN_FILE:
>> case F2FS_IOC_SET_PIN_FILE:
>> case F2FS_IOC_PRECACHE_EXTENTS:
>> + case F2FS_IOC_RESIZE_FS:
>> break;
>> default:
>> return -ENOIOCTLCMD;
>> diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
>> index 963fb45..9b3af4d 100644
>> --- a/fs/f2fs/gc.c
>> +++ b/fs/f2fs/gc.c
>> @@ -311,10 +311,11 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
>> struct sit_info *sm = SIT_I(sbi);
>> struct victim_sel_policy p;
>> unsigned int secno, last_victim;
>> - unsigned int last_segment = MAIN_SEGS(sbi);
>> + unsigned int last_segment;
>> unsigned int nsearched = 0;
>>
>> mutex_lock(&dirty_i->seglist_lock);
>> + last_segment = CUR_MAIN_SECS(sbi) * sbi->segs_per_sec;
>>
>> p.alloc_mode = alloc_mode;
>> select_policy(sbi, gc_type, type, &p);
>> @@ -404,7 +405,8 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
>> sm->last_victim[p.gc_mode] = last_victim + 1;
>> else
>> sm->last_victim[p.gc_mode] = segno + 1;
>> - sm->last_victim[p.gc_mode] %= MAIN_SEGS(sbi);
>> + sm->last_victim[p.gc_mode] %=
>> + (CUR_MAIN_SECS(sbi) * sbi->segs_per_sec);
>> break;
>> }
>> }
>> @@ -1360,3 +1362,131 @@ void f2fs_build_gc_manager(struct f2fs_sb_info *sbi)
>> SIT_I(sbi)->last_victim[ALLOC_NEXT] =
>> GET_SEGNO(sbi, FDEV(0).end_blk) + 1;
>> }
>> +
>> +static int free_segment_range(struct f2fs_sb_info *sbi, unsigned int start,
>> + unsigned int end)
>> +{
>> + int type;
>> + unsigned int segno, next_inuse;
>> + int err = 0;
>> +
>> + /* Move out cursegs from the target range */
>> + for (type = CURSEG_HOT_DATA; type < NR_CURSEG_TYPE; type++)
>> + allocate_segment_for_resize(sbi, type, start, end);
>> +
>> + /* do GC to move out valid blocks in the range */
>> + for (segno = start; segno <= end; segno += sbi->segs_per_sec) {
>> + struct gc_inode_list gc_list = {
>> + .ilist = LIST_HEAD_INIT(gc_list.ilist),
>> + .iroot = RADIX_TREE_INIT(gc_list.iroot, GFP_NOFS),
>> + };
>> +
>> + mutex_lock(&sbi->gc_mutex);
>> + do_garbage_collect(sbi, segno, &gc_list, FG_GC);
>> + mutex_unlock(&sbi->gc_mutex);
>> + put_gc_inode(&gc_list);
>> +
>> + if (get_valid_blocks(sbi, segno, true))
>> + return -EAGAIN;
>> + }
>> +
>> + err = f2fs_sync_fs(sbi->sb, 1);
>> + if (err)
>> + return err;
>> +
>> + next_inuse = find_next_inuse(FREE_I(sbi), end + 1, start);
>> + if (next_inuse <= end) {
>> + f2fs_msg(sbi->sb, KERN_ERR,
>> + "segno %u should be free but still inuse!", next_inuse);
>> + f2fs_bug_on(sbi, 1);
>> + }
>> + return err;
>> +}
>> +
>> +int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
>> +{
>> + __u64 old_block_count, shrunk_blocks;
>> + unsigned int secs;
>> + int gc_mode, gc_type;
>> + int err = 0;
>> +
>> + old_block_count = le64_to_cpu(F2FS_RAW_SUPER(sbi)->block_count);
>> + if (block_count > old_block_count)
>> + return -EINVAL;
>> +
>> + /* new fs size should align to section size */
>> + if (block_count % BLKS_PER_SEC(sbi))
>> + return -EINVAL;
>> +
>> + if (block_count == old_block_count)
>> + return 0;
>
> if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
> f2fs_msg(sbi->sb, KERN_ERR,
> "Should run fsck to repair first.");
> return -EINVAL;
> }
>
> if (test_opt(sbi, DISABLE_CHECKPOINT)) {
> f2fs_msg(sbi->sb, KERN_ERR,
> "Checkpoint should be enabled.");
> return -EINVAL;
> }
>
> Do we need to freeze_bdev and thaw_bdev for this?
Agreed.
>
>> +
>> + shrunk_blocks = old_block_count - block_count;
>> + secs = shrunk_blocks / BLKS_PER_SEC(sbi);
>> + spin_lock(&sbi->stat_lock);
>> + if (shrunk_blocks + valid_user_blocks(sbi) +
>> + sbi->current_reserved_blocks + sbi->unusable_block_count +
>> + F2FS_OPTION(sbi).root_reserved_blocks > sbi->user_block_count)
>> + err = -ENOSPC;
>> + else
>> + sbi->user_block_count -= shrunk_blocks;
>> + spin_unlock(&sbi->stat_lock);
>> + if (err)
>> + return err;
>> +
>> + mutex_lock(&sbi->resize_mutex);
>> + set_sbi_flag(sbi, SBI_IS_RESIZEFS);
>> + mutex_lock(&DIRTY_I(sbi)->seglist_lock);
>> + CUR_MAIN_SECS(sbi) = MAIN_SECS(sbi) - secs;
>
> OLD_MAIN_SECS(sbi) = MAIN_SECS(sbi);
> MAIN_SECS(sbi) -= secs;
>
>> + for (gc_mode = 0; gc_mode < MAX_GC_POLICY; gc_mode++)
>> + if (SIT_I(sbi)->last_victim[gc_mode] >=
>> + CUR_MAIN_SECS(sbi) * sbi->segs_per_sec)
>> + SIT_I(sbi)->last_victim[gc_mode] = 0;
>> + for (gc_type = BG_GC; gc_type <= FG_GC; gc_type++)
>> + if (sbi->next_victim_seg[gc_type] >=
>> + CUR_MAIN_SECS(sbi) * sbi->segs_per_sec)
>> + sbi->next_victim_seg[gc_type] = NULL_SEGNO;
>> + mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
>> +
>> + err = free_segment_range(sbi, CUR_MAIN_SECS(sbi) * sbi->segs_per_sec,
>> + MAIN_SEGS(sbi) - 1);
>> + if (err)
>> + goto out;
>> +
>> + /* Update superblock */
>> + F2FS_RAW_SUPER(sbi)->section_count = cpu_to_le32(CUR_MAIN_SECS(sbi));
>> + F2FS_RAW_SUPER(sbi)->segment_count = cpu_to_le32(le32_to_cpu(
>> + F2FS_RAW_SUPER(sbi)->segment_count) - secs * sbi->segs_per_sec);
>> + F2FS_RAW_SUPER(sbi)->segment_count_main = cpu_to_le32(
>> + CUR_MAIN_SECS(sbi) * sbi->segs_per_sec);
>> + F2FS_RAW_SUPER(sbi)->block_count = cpu_to_le64(block_count);
>> +
>> + err = f2fs_commit_super(sbi, false);
>> + if (err)
>> + goto out;
>> +
>> + /* Update FS metadata */
>> + SM_I(sbi)->segment_count -= secs * sbi->segs_per_sec;
>> + MAIN_SECS(sbi) = CUR_MAIN_SECS(sbi);
>> + MAIN_SEGS(sbi) = MAIN_SECS(sbi) * sbi->segs_per_sec;
>> + F2FS_CKPT(sbi)->user_block_count = cpu_to_le64(sbi->user_block_count);
>> + FREE_I(sbi)->free_sections -= secs;
>> + FREE_I(sbi)->free_segments -= secs * sbi->segs_per_sec;
>> +
>> + clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
>> + err = f2fs_sync_fs(sbi->sb, 1);
>> +out:
>> + if (err) {
>> + set_sbi_flag(sbi, SBI_NEED_FSCK);
>> + f2fs_msg(sbi->sb, KERN_ERR,
>> + "resize_fs failed, should run fsck to repair!");
>> +
>> + CUR_MAIN_SECS(sbi) = MAIN_SECS(sbi);
>
> MAIN_SECS(sbi) = OLD_MAIN_SECS(sbi);
>
>> + spin_lock(&sbi->stat_lock);
>> + sbi->user_block_count += shrunk_blocks;
>> + spin_unlock(&sbi->stat_lock);
>
> Should we recover super_block and FS metadata?
Correct.
>
>> + }
>
> if (!err)
> Need to shrink bitmaps?
You mean sit_nat_ver_bitmap?
>
>> + clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
>> + mutex_unlock(&sbi->resize_mutex);
>> + return err;
>> +}
>> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
>> index 07e9235..c70daa5 100644
>> --- a/fs/f2fs/segment.c
>> +++ b/fs/f2fs/segment.c
>> @@ -2360,7 +2360,7 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
>> {
>> struct free_segmap_info *free_i = FREE_I(sbi);
>> unsigned int segno, secno, zoneno;
>> - unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone;
>> + unsigned int total_zones = CUR_MAIN_SECS(sbi) / sbi->secs_per_zone;
>
> These are unnecessary changes. Please remain MAIN_SECS() and modify resize_fs
> to use that.
>
>> unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg);
>> unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
>> unsigned int left_start = hint;
>> @@ -2377,12 +2377,13 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
>> goto got_it;
>> }
>> find_other_zone:
>> - secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint);
>> - if (secno >= MAIN_SECS(sbi)) {
>> + secno = find_next_zero_bit(free_i->free_secmap, CUR_MAIN_SECS(sbi),
>> + hint);
>> + if (secno >= CUR_MAIN_SECS(sbi)) {
>> if (dir == ALLOC_RIGHT) {
>> secno = find_next_zero_bit(free_i->free_secmap,
>> - MAIN_SECS(sbi), 0);
>> - f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi));
>> + CUR_MAIN_SECS(sbi), 0);
>> + f2fs_bug_on(sbi, secno >= CUR_MAIN_SECS(sbi));
>> } else {
>> go_left = 1;
>> left_start = hint - 1;
>> @@ -2397,8 +2398,8 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
>> continue;
>> }
>> left_start = find_next_zero_bit(free_i->free_secmap,
>> - MAIN_SECS(sbi), 0);
>> - f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi));
>> + CUR_MAIN_SECS(sbi), 0);
>> + f2fs_bug_on(sbi, left_start >= CUR_MAIN_SECS(sbi));
>> break;
>> }
>> secno = left_start;
>> @@ -2651,6 +2652,40 @@ static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
>> stat_inc_seg_type(sbi, curseg);
>> }
>>
>> +void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
>> + unsigned int start, unsigned int end)
>> +{
>> + struct curseg_info *curseg = CURSEG_I(sbi, type);
>> + unsigned int segno;
>> +
>> + down_read(&SM_I(sbi)->curseg_lock);
>> + mutex_lock(&curseg->curseg_mutex);
>> + down_write(&SIT_I(sbi)->sentry_lock);
>> +
>> + segno = CURSEG_I(sbi, type)->segno;
>> + if (segno < start || segno > end)
>> + goto unlock;
>> +
>> + if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type))
>> + change_curseg(sbi, type);
>> + else
>> + new_curseg(sbi, type, true);
>> +
>> + stat_inc_seg_type(sbi, curseg);
>> +
>> + locate_dirty_segment(sbi, segno);
>> +unlock:
>> + up_write(&SIT_I(sbi)->sentry_lock);
>> +
>> + if (segno != curseg->segno)
>> + f2fs_msg(sbi->sb, KERN_NOTICE,
>> + "For resize: curseg of type %d: %u ==> %u",
>> + type, segno, curseg->segno);
>> +
>> + mutex_unlock(&curseg->curseg_mutex);
>> + up_read(&SM_I(sbi)->curseg_lock);
>> +}
>> +
>> void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
>> {
>> struct curseg_info *curseg;
>> @@ -3774,7 +3809,7 @@ void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
>> struct f2fs_journal *journal = curseg->journal;
>> struct sit_entry_set *ses, *tmp;
>> struct list_head *head = &SM_I(sbi)->sit_entry_set;
>> - bool to_journal = true;
>> + bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS);
>> struct seg_entry *se;
>>
>> down_write(&sit_i->sentry_lock);
>> @@ -3793,7 +3828,8 @@ void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
>> * entries, remove all entries from journal and add and account
>> * them in sit entry set.
>> */
>> - if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL))
>> + if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) ||
>> + !to_journal)
>> remove_sits_in_journal(sbi);
>>
>> /*
>> diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
>> index 429007b..eaa9782 100644
>> --- a/fs/f2fs/segment.h
>> +++ b/fs/f2fs/segment.h
>> @@ -59,6 +59,7 @@
>>
>> #define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments)
>> #define MAIN_SECS(sbi) ((sbi)->total_sections)
>> +#define CUR_MAIN_SECS(sbi) ((sbi)->current_total_sections)
>>
>> #define TOTAL_SEGS(sbi) \
>> (SM_I(sbi) ? SM_I(sbi)->segment_count : \
>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
>> index 1f581f0..166a97e 100644
>> --- a/fs/f2fs/super.c
>> +++ b/fs/f2fs/super.c
>> @@ -2843,6 +2843,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
>> sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec);
>> sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone);
>> sbi->total_sections = le32_to_cpu(raw_super->section_count);
>> + sbi->current_total_sections = sbi->total_sections;
>> sbi->total_node_count =
>> (le32_to_cpu(raw_super->segment_count_nat) / 2)
>> * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK;
>> @@ -3296,6 +3297,7 @@ 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);
>> + mutex_init(&sbi->resize_mutex);
>> init_rwsem(&sbi->node_write);
>> init_rwsem(&sbi->node_change);
>>
>> @@ -3367,6 +3369,8 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
>> set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
>> sbi->interval_time[DISABLE_TIME] = DEF_DISABLE_QUICK_INTERVAL;
>> }
>> + if (__is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FSCK_FLAG))
>> + set_sbi_flag(sbi, SBI_NEED_FSCK);
>>
>
> Then, we don't need to remove this in init_sb_info().
init_sb_info() removes the flag due to fill_super retrying flow, I think it's
okay to remain that removal, as above code will execute later than init_sb_info().
Thanks,
>
>> /* Initialize device list */
>> err = f2fs_scan_devices(sbi);
>> --
>> 1.8.3.1
> .
>
