[PATCH] f2fs: let's keep writing IOs on SBI_NEED_FSCK

[PATCH] f2fs: let's keep writing IOs on SBI_NEED_FSCK

[Jaegeuk Kim]

SBI_NEED_FSCK is an indicator that fsck.f2fs needs to be triggered, so it
is not fully critical to stop any IO writes. So, let's allow to write data
instead of reporting EIO forever given SBI_NEED_FSCK.

Fixes: 955772787667 ("f2fs: drop inplace IO if fs status is abnormal")
Cc: <stable@kernel.org> # v5.13+
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/segment.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 15cc89eef28d..f9b7fb785e1d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3563,7 +3563,7 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
 		goto drop_bio;
 	}
 
-	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
+	if (f2fs_cp_error(sbi)) {
 		err = -EIO;
 		goto drop_bio;
 	}
-- 
2.32.0.93.g670b81a890-goog

Re: [f2fs-dev] [PATCH] f2fs: let's keep writing IOs on SBI_NEED_FSCK

[Chao Yu]

On 2021/7/15 7:18, Jaegeuk Kim wrote:
> SBI_NEED_FSCK is an indicator that fsck.f2fs needs to be triggered, so it
> is not fully critical to stop any IO writes. So, let's allow to write data
> instead of reporting EIO forever given SBI_NEED_FSCK.

Well, it looks we need to check why there is SBI_NEED_FSCK flag.

If this patch breaks something, how about forcing OPU if SBI_NEED_FSCK
was set?

> 
> Fixes: 955772787667 ("f2fs: drop inplace IO if fs status is abnormal")
> Cc: <stable@kernel.org> # v5.13+
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>   fs/f2fs/segment.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 15cc89eef28d..f9b7fb785e1d 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -3563,7 +3563,7 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
>   		goto drop_bio;
>   	}
>   
> -	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
> +	if (f2fs_cp_error(sbi)) {
>   		err = -EIO;
>   		goto drop_bio;
>   	}
> 

Re: [f2fs-dev] [PATCH] f2fs: let's keep writing IOs on SBI_NEED_FSCK

[Jaegeuk Kim]

On 07/19, Chao Yu wrote:
> On 2021/7/15 7:18, Jaegeuk Kim wrote:
> > SBI_NEED_FSCK is an indicator that fsck.f2fs needs to be triggered, so it
> > is not fully critical to stop any IO writes. So, let's allow to write data
> > instead of reporting EIO forever given SBI_NEED_FSCK.
> 
> Well, it looks we need to check why there is SBI_NEED_FSCK flag.
> 
> If this patch breaks something, how about forcing OPU if SBI_NEED_FSCK
> was set?

Yea, let me take that.

> 
> > 
> > Fixes: 955772787667 ("f2fs: drop inplace IO if fs status is abnormal")
> > Cc: <stable@kernel.org> # v5.13+
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > ---
> >   fs/f2fs/segment.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> > index 15cc89eef28d..f9b7fb785e1d 100644
> > --- a/fs/f2fs/segment.c
> > +++ b/fs/f2fs/segment.c
> > @@ -3563,7 +3563,7 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
> >   		goto drop_bio;
> >   	}
> > -	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
> > +	if (f2fs_cp_error(sbi)) {
> >   		err = -EIO;
> >   		goto drop_bio;
> >   	}
> > 

Re: [PATCH v2] f2fs: let's keep writing IOs on SBI_NEED_FSCK

[Jaegeuk Kim]

SBI_NEED_FSCK is an indicator that fsck.f2fs needs to be triggered, so it
is not fully critical to stop any IO writes. So, let's allow to write data
instead of reporting EIO forever given SBI_NEED_FSCK, but do keep OPU.

Fixes: 955772787667 ("f2fs: drop inplace IO if fs status is abnormal")
Cc: <stable@kernel.org> # v5.13+
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 v2 from v1:
  - use OPU in the NEED_FSCK case.

 fs/f2fs/data.c    | 2 ++
 fs/f2fs/segment.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index d2cf48c5a2e4..ba120d55e9b1 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2498,6 +2498,8 @@ bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio)
 		return true;
 	if (f2fs_is_atomic_file(inode))
 		return true;
+	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
+		return true;
 
 	/* swap file is migrating in aligned write mode */
 	if (is_inode_flag_set(inode, FI_ALIGNED_WRITE))
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 15cc89eef28d..f9b7fb785e1d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3563,7 +3563,7 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
 		goto drop_bio;
 	}
 
-	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
+	if (f2fs_cp_error(sbi)) {
 		err = -EIO;
 		goto drop_bio;
 	}
-- 
2.32.0.402.g57bb445576-goog

Re: [f2fs-dev] [PATCH v2] f2fs: let's keep writing IOs on SBI_NEED_FSCK

[Chao Yu]

On 2021/7/20 2:50, Jaegeuk Kim wrote:
> SBI_NEED_FSCK is an indicator that fsck.f2fs needs to be triggered, so it
> is not fully critical to stop any IO writes. So, let's allow to write data
> instead of reporting EIO forever given SBI_NEED_FSCK, but do keep OPU.
> 
> Fixes: 955772787667 ("f2fs: drop inplace IO if fs status is abnormal")
> Cc: <stable@kernel.org> # v5.13+
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,