Re: [f2fs-dev] [PATCH RFC 1/5] f2fs: introduce inmem curseg

From: Chao Yu
Date: Mon Aug 03 2020 - 22:53:42 EST

On 2020/8/4 10:44, Jaegeuk Kim wrote:
On 08/04, Chao Yu wrote:
On 2020/7/25 16:42, Chao Yu wrote:
On 2020/7/16 9:24, Chao Yu wrote:
On 2020/7/16 3:07, Jaegeuk Kim wrote:
On 07/15, Chao Yu wrote:
On 2020/7/7 11:51, Jaegeuk Kim wrote:
On 07/07, Chao Yu wrote:
On 2020/7/7 11:21, Jaegeuk Kim wrote:
Hi Chao,

Do you have any brief design doc to present the idea?

Hi Jaegeuk,

You mean this whole patchset, right?

I can add a brief design description in patch 0/5.

Yeah, it's a bit hard to understand the whole flow.

Jaegeuk,

Do you have time to take a look at this idea summarized in
[PATCH 0/5]'s cover letter?

Sorry, I couldn't afford to sitting down to review the design.
Let me give it a try soon.

Alright, let me know if you have any question about the idea.

Ping,

Jaegeuk, still be too busy...? :P

Ping again...

Any thoughts about left patches in patchset?

Ah, I was waiting for your another patch-set.

Oops, I thought that you have not finished reviewing all patches...

Anyway, let me send v2 w/ changes mentioned by you.

BTW, we can discuss about how to enable such feature, options can be:
- enable when sb feature F2FS_FEATURE_ATGC was set
- enable via mount option
- enable via sysfs




Thanks,





Thanks,



Thanks,

On 06/30, Chao Yu wrote:
Previous implementation of aligned pinfile allocation will:
- allocate new segment on cold data log no matter whether last used
segment is partially used or not, it makes IOs more random;
- force concurrent cold data/GCed IO going into warm data area, it
can make a bad effect on hot/cold data separation;

In this patch, we introduce a new type of log named 'inmem curseg',
the differents from normal curseg is:
- it reuses existed segment type (CURSEG_XXX_NODE/DATA);
- it only exists in memory, its segno, blkofs, summary will not b
persisted into checkpoint area;

With this new feature, we can enhance scalability of log, special
allocators can be created for purposes:
- pure lfs allocator for aligned pinfile allocation or file
defragmentation
- pure ssr allocator for later feature

So that, let's update aligned pinfile allocation to use this new
inmem curseg fwk.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
fs/f2fs/checkpoint.c | 7 ++-
fs/f2fs/debug.c | 6 ++-
fs/f2fs/f2fs.h | 12 +++--
fs/f2fs/file.c | 3 +-
fs/f2fs/gc.c | 2 +-
fs/f2fs/segment.c | 107 ++++++++++++++++++++++++++++++-------------
fs/f2fs/segment.h | 17 ++++---
fs/f2fs/super.c | 9 ++--
8 files changed, 112 insertions(+), 51 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 1bb8278a1c4a..644a914af25a 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1623,11 +1623,16 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_flush_sit_entries(sbi, cpc);
+ /* save inmem log status */
+ f2fs_save_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
+
err = do_checkpoint(sbi, cpc);
if (err)
f2fs_release_discard_addrs(sbi);
else
f2fs_clear_prefree_segments(sbi, cpc);
+
+ f2fs_restore_inmem_curseg(sbi, CURSEG_COLD_DATA_PINNED);
stop:
unblock_operations(sbi);
stat_inc_cp_count(sbi->stat_info);
@@ -1658,7 +1663,7 @@ void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
}
sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
- NR_CURSEG_TYPE - __cp_payload(sbi)) *
+ NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
F2FS_ORPHANS_PER_BLOCK;
}
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 4276c0f79beb..41a91aa8c262 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -164,7 +164,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
* 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
/ 2;
si->util_invalid = 50 - si->util_free - si->util_valid;
- for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
+ for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
struct curseg_info *curseg = CURSEG_I(sbi, i);
si->curseg[i] = curseg->segno;
si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
@@ -393,6 +393,10 @@ static int stat_show(struct seq_file *s, void *v)
si->dirty_seg[CURSEG_COLD_NODE],
si->full_seg[CURSEG_COLD_NODE],
si->valid_blks[CURSEG_COLD_NODE]);
+ seq_printf(s, " - Pinned file: %8d %8d %8d\n",
+ si->curseg[CURSEG_COLD_DATA_PINNED],
+ si->cursec[CURSEG_COLD_DATA_PINNED],
+ si->curzone[CURSEG_COLD_DATA_PINNED]);
seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
si->main_area_segs - si->dirty_count -
si->prefree_count - si->free_segs,
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 7d6c5f8ce16b..f06c77066284 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -996,7 +996,9 @@ static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
*/
#define NR_CURSEG_DATA_TYPE (3)
#define NR_CURSEG_NODE_TYPE (3)
-#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
+#define NR_CURSEG_INMEM_TYPE (1)
+#define NR_CURSEG_PERSIST_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
+#define NR_CURSEG_TYPE (NR_CURSEG_INMEM_TYPE + NR_CURSEG_PERSIST_TYPE)
enum {
CURSEG_HOT_DATA = 0, /* directory entry blocks */
@@ -1005,8 +1007,10 @@ enum {
CURSEG_HOT_NODE, /* direct node blocks of directory files */
CURSEG_WARM_NODE, /* direct node blocks of normal files */
CURSEG_COLD_NODE, /* indirect node blocks */
- NO_CHECK_TYPE,
- CURSEG_COLD_DATA_PINNED,/* cold data for pinned file */
+ NR_PERSISTENT_LOG, /* number of persistent log */
+ CURSEG_COLD_DATA_PINNED = NR_PERSISTENT_LOG,
+ /* pinned file that needs consecutive block address */
+ NO_CHECK_TYPE, /* number of persistent & inmem log */
};
struct flush_cmd {
@@ -3359,6 +3363,8 @@ block_t f2fs_get_unusable_blocks(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 f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi, int type);
+void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi, int type);
void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
unsigned int start, unsigned int end);
void f2fs_allocate_new_segment(struct f2fs_sb_info *sbi, int type);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c10e82806c2a..8611ade06018 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1656,13 +1656,14 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
}
down_write(&sbi->pin_sem);
- map.m_seg_type = CURSEG_COLD_DATA_PINNED;
f2fs_lock_op(sbi);
f2fs_allocate_new_segment(sbi, CURSEG_COLD_DATA);
f2fs_unlock_op(sbi);
+ map.m_seg_type = CURSEG_COLD_DATA_PINNED;
err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
+
up_write(&sbi->pin_sem);
done += map.m_len;
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 3b718da69910..84807abe4e00 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1448,7 +1448,7 @@ static int free_segment_range(struct f2fs_sb_info *sbi,
mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
/* Move out cursegs from the target range */
- for (type = CURSEG_HOT_DATA; type < NR_CURSEG_TYPE; type++)
+ for (type = CURSEG_HOT_DATA; type < NR_CURSEG_PERSIST_TYPE; type++)
f2fs_allocate_segment_for_resize(sbi, type, start, end);
/* do GC to move out valid blocks in the range */
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 5924b3965ae4..863ec6f1fb87 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1958,7 +1958,7 @@ static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
mutex_lock(&dirty_i->seglist_lock);
for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi))
- __set_test_and_free(sbi, segno);
+ __set_test_and_free(sbi, segno, false);
mutex_unlock(&dirty_i->seglist_lock);
}
@@ -2496,6 +2496,7 @@ static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
struct curseg_info *curseg = CURSEG_I(sbi, type);
struct summary_footer *sum_footer;
+ curseg->inited = true;
curseg->segno = curseg->next_segno;
curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
curseg->next_blkoff = 0;
@@ -2503,24 +2504,31 @@ static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
sum_footer = &(curseg->sum_blk->footer);
memset(sum_footer, 0, sizeof(struct summary_footer));
- if (IS_DATASEG(type))
+ if (IS_DATASEG(curseg->seg_type))
SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA);
- if (IS_NODESEG(type))
+ if (IS_NODESEG(curseg->seg_type))
SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE);
- __set_sit_entry_type(sbi, type, curseg->segno, modified);
+ __set_sit_entry_type(sbi, curseg->seg_type, curseg->segno, modified);
}
static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
{
+ struct curseg_info *curseg = CURSEG_I(sbi, type);
+
/* if segs_per_sec is large than 1, we need to keep original policy. */
if (__is_large_section(sbi))
- return CURSEG_I(sbi, type)->segno;
+ return curseg->segno;
+
+ /* inmem log may not locate on any segment after mount */
+ if (!curseg->inited)
+ return 0;
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
return 0;
if (test_opt(sbi, NOHEAP) &&
- (type == CURSEG_HOT_DATA || IS_NODESEG(type)))
+ (curseg->seg_type == CURSEG_HOT_DATA ||
+ IS_NODESEG(curseg->seg_type)))
return 0;
if (SIT_I(sbi)->last_victim[ALLOC_NEXT])
@@ -2530,7 +2538,7 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
return 0;
- return CURSEG_I(sbi, type)->segno;
+ return curseg->segno;
}
/*
@@ -2540,12 +2548,14 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
{
struct curseg_info *curseg = CURSEG_I(sbi, type);
+ unsigned short seg_type = curseg->seg_type;
unsigned int segno = curseg->segno;
int dir = ALLOC_LEFT;
- write_sum_page(sbi, curseg->sum_blk,
+ if (curseg->inited)
+ write_sum_page(sbi, curseg->sum_blk,
GET_SUM_BLOCK(sbi, segno));
- if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA)
+ if (seg_type == CURSEG_WARM_DATA || seg_type == CURSEG_COLD_DATA)
dir = ALLOC_RIGHT;
if (test_opt(sbi, NOHEAP))
@@ -2622,6 +2632,43 @@ static void change_curseg(struct f2fs_sb_info *sbi, int type)
f2fs_put_page(sum_page, 1);
}
+void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi, int type)
+{
+ struct curseg_info *curseg = CURSEG_I(sbi, type);
+
+ mutex_lock(&curseg->curseg_mutex);
+ if (!curseg->inited)
+ goto out;
+
+ if (get_valid_blocks(sbi, curseg->segno, false)) {
+ write_sum_page(sbi, curseg->sum_blk,
+ GET_SUM_BLOCK(sbi, curseg->segno));
+ } else {
+ mutex_lock(&DIRTY_I(sbi)->seglist_lock);
+ __set_test_and_free(sbi, curseg->segno, true);
+ mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
+ }
+out:
+ mutex_unlock(&curseg->curseg_mutex);
+}
+
+void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi, int type)
+{
+ struct curseg_info *curseg = CURSEG_I(sbi, type);
+
+ mutex_lock(&curseg->curseg_mutex);
+ if (!curseg->inited)
+ goto out;
+ if (get_valid_blocks(sbi, curseg->segno, false))
+ goto out;
+
+ mutex_lock(&DIRTY_I(sbi)->seglist_lock);
+ __set_test_and_inuse(sbi, curseg->segno);
+ mutex_unlock(&DIRTY_I(sbi)->seglist_lock);
+out:
+ mutex_unlock(&curseg->curseg_mutex);
+}
+
static int get_ssr_segment(struct f2fs_sb_info *sbi, int type)
{
struct curseg_info *curseg = CURSEG_I(sbi, type);
@@ -2738,11 +2785,15 @@ void __allocate_new_segment(struct f2fs_sb_info *sbi, int type)
struct curseg_info *curseg = CURSEG_I(sbi, type);
unsigned int old_segno;
+ if (!curseg->inited)
+ goto alloc;
+
if (!curseg->next_blkoff &&
!get_valid_blocks(sbi, curseg->segno, false) &&
!get_ckpt_valid_blocks(sbi, curseg->segno))
return;
+alloc:
old_segno = curseg->segno;
SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true);
locate_dirty_segment(sbi, old_segno);
@@ -3126,19 +3177,6 @@ void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
{
struct sit_info *sit_i = SIT_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, type);
- bool put_pin_sem = false;
-
- if (type == CURSEG_COLD_DATA) {
- /* GC during CURSEG_COLD_DATA_PINNED allocation */
- if (down_read_trylock(&sbi->pin_sem)) {
- put_pin_sem = true;
- } else {
- type = CURSEG_WARM_DATA;
- curseg = CURSEG_I(sbi, type);
- }
- } else if (type == CURSEG_COLD_DATA_PINNED) {
- type = CURSEG_COLD_DATA;
- }
down_read(&SM_I(sbi)->curseg_lock);
@@ -3204,9 +3242,6 @@ void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
mutex_unlock(&curseg->curseg_mutex);
up_read(&SM_I(sbi)->curseg_lock);
-
- if (put_pin_sem)
- up_read(&sbi->pin_sem);
}
static void update_device_state(struct f2fs_io_info *fio)
@@ -3574,7 +3609,7 @@ static int read_normal_summaries(struct f2fs_sb_info *sbi, int type)
blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type -
CURSEG_HOT_DATA]);
if (__exist_node_summaries(sbi))
- blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type);
+ blk_addr = sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type);
else
blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type);
} else {
@@ -3652,8 +3687,9 @@ static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
}
if (__exist_node_summaries(sbi))
- f2fs_ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type),
- NR_CURSEG_TYPE - type, META_CP, true);
+ f2fs_ra_meta_pages(sbi,
+ sum_blk_addr(sbi, NR_CURSEG_PERSIST_TYPE, type),
+ NR_CURSEG_PERSIST_TYPE - type, META_CP, true);
for (; type <= CURSEG_COLD_NODE; type++) {
err = read_normal_summaries(sbi, type);
@@ -4155,14 +4191,14 @@ static int build_curseg(struct f2fs_sb_info *sbi)
struct curseg_info *array;
int i;
- array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE, sizeof(*array)),
- GFP_KERNEL);
+ array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE,
+ sizeof(*array)), GFP_KERNEL);
if (!array)
return -ENOMEM;
SM_I(sbi)->curseg_array = array;
- for (i = 0; i < NR_CURSEG_TYPE; i++) {
+ for (i = 0; i < NO_CHECK_TYPE; i++) {
mutex_init(&array[i].curseg_mutex);
array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL);
if (!array[i].sum_blk)
@@ -4172,8 +4208,13 @@ static int build_curseg(struct f2fs_sb_info *sbi)
sizeof(struct f2fs_journal), GFP_KERNEL);
if (!array[i].journal)
return -ENOMEM;
+ if (i < NR_PERSISTENT_LOG)
+ array[i].seg_type = CURSEG_HOT_DATA + i;
+ else if (i == CURSEG_COLD_DATA_PINNED)
+ array[i].seg_type = CURSEG_COLD_DATA;
array[i].segno = NULL_SEGNO;
array[i].next_blkoff = 0;
+ array[i].inited = false;
}
return restore_curseg_summaries(sbi);
}
@@ -4408,7 +4449,7 @@ static int sanity_check_curseg(struct f2fs_sb_info *sbi)
* In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
* In LFS curseg, all blkaddr after .next_blkoff should be unused.
*/
- for (i = 0; i < NO_CHECK_TYPE; i++) {
+ for (i = 0; i < NR_PERSISTENT_LOG; i++) {
struct curseg_info *curseg = CURSEG_I(sbi, i);
struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
unsigned int blkofs = curseg->next_blkoff;
@@ -4637,7 +4678,7 @@ int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi)
{
int i, ret;
- for (i = 0; i < NO_CHECK_TYPE; i++) {
+ for (i = 0; i < NR_PERSISTENT_LOG; i++) {
ret = fix_curseg_write_pointer(sbi, i);
if (ret)
return ret;
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index f261e3e6a69b..8ff261550cbb 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -22,7 +22,7 @@
#define GET_R2L_SEGNO(free_i, segno) ((segno) + (free_i)->start_segno)
#define IS_DATASEG(t) ((t) <= CURSEG_COLD_DATA)
-#define IS_NODESEG(t) ((t) >= CURSEG_HOT_NODE)
+#define IS_NODESEG(t) ((t) >= CURSEG_HOT_NODE && (t) <= CURSEG_COLD_NODE)
#define IS_HOT(t) ((t) == CURSEG_HOT_NODE || (t) == CURSEG_HOT_DATA)
#define IS_WARM(t) ((t) == CURSEG_WARM_NODE || (t) == CURSEG_WARM_DATA)
@@ -34,7 +34,8 @@
((seg) == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno) || \
((seg) == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno) || \
((seg) == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno) || \
- ((seg) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno))
+ ((seg) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno) || \
+ ((seg) == CURSEG_I(sbi, CURSEG_COLD_DATA_PINNED)->segno))
#define IS_CURSEC(sbi, secno) \
(((secno) == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno / \
@@ -48,7 +49,9 @@
((secno) == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno / \
(sbi)->segs_per_sec) || \
((secno) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \
- (sbi)->segs_per_sec)) \
+ (sbi)->segs_per_sec) || \
+ ((secno) == CURSEG_I(sbi, CURSEG_COLD_DATA_PINNED)->segno / \
+ (sbi)->segs_per_sec))
#define MAIN_BLKADDR(sbi) \
(SM_I(sbi) ? SM_I(sbi)->main_blkaddr : \
@@ -288,10 +291,12 @@ struct curseg_info {
struct rw_semaphore journal_rwsem; /* protect journal area */
struct f2fs_journal *journal; /* cached journal info */
unsigned char alloc_type; /* current allocation type */
+ unsigned short seg_type; /* segment type like CURSEG_XXX_TYPE */
unsigned int segno; /* current segment number */
unsigned short next_blkoff; /* next block offset to write */
unsigned int zone; /* current zone number */
unsigned int next_segno; /* preallocated segment */
+ bool inited; /* indicate inmem log is inited */
};
struct sit_entry_set {
@@ -305,8 +310,6 @@ struct sit_entry_set {
*/
static inline struct curseg_info *CURSEG_I(struct f2fs_sb_info *sbi, int type)
{
- if (type == CURSEG_COLD_DATA_PINNED)
- type = CURSEG_COLD_DATA;
return (struct curseg_info *)(SM_I(sbi)->curseg_array + type);
}
@@ -438,7 +441,7 @@ static inline void __set_inuse(struct f2fs_sb_info *sbi,
}
static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
- unsigned int segno)
+ unsigned int segno, bool inmem)
{
struct free_segmap_info *free_i = FREE_I(sbi);
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
@@ -449,7 +452,7 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
if (test_and_clear_bit(segno, free_i->free_segmap)) {
free_i->free_segments++;
- if (IS_CURSEC(sbi, secno))
+ if (!inmem && IS_CURSEC(sbi, secno))
goto skip_free;
next = find_next_bit(free_i->free_segmap,
start_segno + sbi->segs_per_sec, start_segno);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 80cb7cd358f8..0fefa130585f 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -575,7 +575,8 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
case Opt_active_logs:
if (args->from && match_int(args, &arg))
return -EINVAL;
- if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
+ if (arg != 2 && arg != 4 &&
+ arg != NR_CURSEG_PERSIST_TYPE)
return -EINVAL;
F2FS_OPTION(sbi).active_logs = arg;
break;
@@ -981,7 +982,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
}
/* Not pass down write hints if the number of active logs is lesser
- * than NR_CURSEG_TYPE.
+ * than NR_CURSEG_PERSIST_TYPE.
*/
if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
@@ -1614,7 +1615,7 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
static void default_options(struct f2fs_sb_info *sbi)
{
/* init some FS parameters */
- F2FS_OPTION(sbi).active_logs = NR_CURSEG_TYPE;
+ F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
@@ -2946,7 +2947,7 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
cp_payload = __cp_payload(sbi);
if (cp_pack_start_sum < cp_payload + 1 ||
cp_pack_start_sum > blocks_per_seg - 1 -
- NR_CURSEG_TYPE) {
+ NR_CURSEG_PERSIST_TYPE) {
f2fs_err(sbi, "Wrong cp_pack_start_sum: %u",
cp_pack_start_sum);
return 1;
--
2.26.2
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