hen selecting GC victims. This was
achieved by reducing the migration of the node blocks by 69.4%
(253,131,743 blks -> 77,463,278 blks). It is possible to achieve low WAF
performance with the GC victim selection method in environments where the
section size is relatively small.
Signed-off-by: Yonggi
hen selecting GC victims. This was
achieved by reducing the migration of the node blocks by 69.4%
(253,131,743 blks -> 77,463,278 blks). It is possible to achieve low WAF
performance with the GC victim selection method in environments where the
section size is relatively small.
Signed-off-by: Y
Fix typo in f2fs.h
Detected by Jaeyoon Choi
Signed-off-by: Yonggil Song
---
fs/f2fs/f2fs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index eddfd35eadb6..661096be59d1 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -274,7 +274,7
Fix typo in f2fs.h
Detected by Jaeyoon Choi
Signed-off-by: Yonggil Song
---
fs/f2fs/f2fs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index eddfd35eadb6..661096be59d1 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -274,7 +274,7
reed. In this case, when f2fs
chooses a victim for the next GC round, the last segment of previous victim
section is chosen as a victim.
Initialize next_victim_seg[gc_type] to NULL_SEGNO for the last segment in
large section.
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 5 +++--
1 file change
")
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 4546e01b2ee0..10677d53ef0e 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1744,8 +1744,9 @@ static int do_garbage_collect(struct f2f
Hi Chao,
Thanks for your review.
I'll fix this and resend a mail.
Thanks
>Hi Yonggil,
>
>I guess your email client forces converting tab and space characters of
>patch, please check that.
>
>On 2022/11/22 10:36, Yonggil Song wrote:
>> When f2fs chooses GC victim in
")
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 0f967b1e98f2..f1b68eda2235 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1749,8 +1749,9 @@ static int do_garbage_collect(struct f2f
reed. In this case, when f2fs
chooses a victim for the next GC round, the last segment of previous victim
section is chosen as a victim.
Initialize next_victim_seg[gc_type] to NULL_SEGNO for the last segment in
large section.
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 5 +++--
1 file change
>On 03/14, Yonggil Song wrote:
>> When f2fs tries to checkpoint during foreground gc in LFS mode, system
>> crash occurs due to lack of free space if the amount of dirty node and
>> dentry pages generated by data migration exceeds free space.
>> The reproduc
higher.
In other words, a user can configure more reserved segments for lower GC
latency or allocate less reserved segments for lower WAF on the same number
of OP segments.
Signed-off-by: Yonggil Song
---
include/f2fs_fs.h | 22 --
lib/libf2fs.c | 22
6/0x70
f2fs_balance_fs+0x16f/0x180 [f2fs]
This patch adds checking whether free sections are enough before checkpoint
during gc.
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 7 ++-
fs/f2fs/segment.h | 26 +-
2 files changed, 27 insertions(+), 6 deletions(-)
diff
6/0x70
f2fs_balance_fs+0x16f/0x180 [f2fs]
This patch adds checking whether free sections are enough before checkpoint
during gc.
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 10 --
fs/f2fs/gc.h | 2 ++
fs/f2fs/segment.h | 27 ++-
3 files changed, 32 inse
for zoned block devices when setting the discard range. This leads to
invalid reset commands and write pointer mismatches.
This patch fixes the zoned block device with 2MiB zone size to reset one
zone at a time.
Signed-off-by: Yonggil Song
---
fs/f2fs/segment.c | 3 ++-
1 file changed, 2 insertions
is lower for
>small writes after this patch, but this should be expected
>with direct IO and in line with how f2fs behaves on top of
>conventional block devices.
>
>Another open question is if the flushing should be done for
>all cases where buffered writes are forced.
>
>Signed-off-by:
hange the current atomic write way")
Signed-off-by: Yonggil Song
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b22f49a6f128..81d326abaac1 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1786,8 +1786,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct
f2fs_gc_control *
hange the current atomic write way")
Signed-off-by: Yonggil Song
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b22f49a6f128..81d326abaac1 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1786,8 +1786,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct
f2fs_gc_control *
hange the current atomic write way")
Cc: sta...@vger.kernel.org
Signed-off-by: Yonggil Song
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b22f49a6f128..81d326abaac1 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1786,8 +1786,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct
f2fs_gc_control *
On 04/17, Yonggil Song wrote:
>> >Fixed a xfstests failure.
>> >
>> >From 400c722c2117660b83190c88e5442d63fbbffe6e Mon Sep 17 00:00:00 2001
>> >From: Jaegeuk Kim
>> >Date: Mon, 10 Apr 2023 14:48:50 -0700
>> >Subject: [PATCH] f2fs: refact
>Fixed a xfstests failure.
>
>From 400c722c2117660b83190c88e5442d63fbbffe6e Mon Sep 17 00:00:00 2001
>From: Jaegeuk Kim
>Date: Mon, 10 Apr 2023 14:48:50 -0700
>Subject: [PATCH] f2fs: refactor f2fs_gc to call checkpoint in urgent condition
>
>The major change is to call checkpoint, if there's not
much higher.
In other words, a user can configure more reserved segments for lower GC
latency or allocate less reserved segments for lower WAF on the same number
of OP segments.
Signed-off-by: Yonggil Song
---
include/f2fs_fs.h | 22 --
lib/libf2fs.c | 18
On 03/17, Yonggil Song wrote:
>> Overview
>>
>>
>> This option allows zoned block device users to configure GC reserved and
>> overprovision area manually according to their demands on performance of
>> sustained write latency and WAF.
>>
>
oduce f2fs_gc_control to consolidate f2fs_gc
parameters")
Signed-off-by: Yonggil Song
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b22f49a6f128..81d326abaac1 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1786,8 +1786,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct
f2fs_gc_control *
On 2023/2/15 10:48, Yonggil Song wrote:
>> When f2fs skipped a gc round during victim migration, there was a bug which
>> would skip all upcoming gc rounds unconditionally because skipped_gc_rwsem
>> was not initialized. It fixes the bug by correctly initializing the
>>
hange the current atomic write way")
Signed-off-by: Yonggil Song
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b22f49a6f128..81d326abaac1 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1786,8 +1786,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct
f2fs_gc_control *
There was a bug that finishing FG GC unconditionally because free sections
are over-estimated after checkpoint in FG GC.
This patch initializes sec_freed by every checkpoint in FG GC.
Signed-off-by: Yonggil Song
---
fs/f2fs/gc.c | 16 +++-
1 file changed, 11 insertions(+), 5
victim selection method in environments where the
section size is relatively small.
Signed-off-by: Yonggil Song
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/gc.c | 96 +++---
fs/f2fs/gc.h | 6
3 files changed, 82 insertions(+), 21 deletions(-)
diff --git a/f
victim selection method in environments where the
section size is relatively small.
Signed-off-by: Yonggil Song
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/gc.c | 96 +++---
fs/f2fs/gc.h | 6
3 files changed, 82 insertions(+), 21 deletions(-)
diff --gi
> On Tue, Feb 13, 2024 at 5:36 PM Yonggil Song wrote:
> >
> >
> > Overview
> >
> >
> > This patch introduces a new way to preference data sections when selecting
> > GC victims. Migration of data blocks causes invalidation of node blocks.
>
> On 12/08, Yonggil Song wrote:
> > Overview
> >
> >
> > This patch introduces a new way to preference data sections when selecting
> > GC victims. Migration of data blocks causes invalidation of node blocks.
> > Therefore, in situations wher
> On 12/21, Yonggil Song wrote:
> > Overview
> >
> >
> > This patch introduces a new way to preference data sections when selecting
> > GC victims. Migration of data blocks causes invalidation of node blocks.
> > Therefore, in situations wher
victim selection method in environments where the
section size is relatively small.
Signed-off-by: Yonggil Song
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/gc.c | 102 +++--
fs/f2fs/gc.h | 6 +++
3 files changed, 88 insertions(+), 21 deletions(-)
diff --git a/f
> On 12/28, Yonggil Song wrote:
> > >From d08b97183bc830779c82b83d94f8b75ad11cb29a Mon Sep 17 00:00:00 2001
> > From: Yonggil Song
> > Date: Thu, 7 Dec 2023 16:34:38 +0900
> > Subject: [PATCH v4] f2fs: New victim selection for GC
> >
> > Overview
> &g
>From d08b97183bc830779c82b83d94f8b75ad11cb29a Mon Sep 17 00:00:00 2001
From: Yonggil Song
Date: Thu, 7 Dec 2023 16:34:38 +0900
Subject: [PATCH v4] f2fs: New victim selection for GC
Overview
This patch introduces a new way to preference data sections when selecting
GC vict
On 11/20, Yonggil Song wrote:
> > >Hi Yonggil,
> > >
> > >On 10/26, Yonggil Song wrote:
> > >> Overview
> > >>
> > >>
> > >> Introduce a new way to select the data section first when selectin
>Hi Yonggil,
>
>On 2023/10/26 17:18, Yonggil Song wrote:
>> Overview
>>
>>
>> Introduce a new way to select the data section first when selecting a
>> victim in foreground GC. This victim selection method works when the
>> prefer_data_vic
victim selection method in environments where the
section size is relatively small.
Signed-off-by: Yonggil Song
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/gc.c | 98 ++
2 files changed, 77 insertions(+), 22 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/
>Hi Yonggil,
>
>On 10/26, Yonggil Song wrote:
>> Overview
>>
>>
>> Introduce a new way to select the data section first when selecting a
>> victim in foreground GC. This victim selection method works when the
>> prefer_data_victim mount opti
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