[PATCH] f2fs: avoid swapon failure by giving a warning first

[PATCH] f2fs: avoid swapon failure by giving a warning first

[Jaegeuk Kim]

The final solution can be migrating blocks to form a section-aligned file
internally. Meanwhile, let's ask users to do that when preparing the swap
file initially like:
1) create()
2) ioctl(F2FS_IOC_SET_PIN_FILE)
3) fallocate()

Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/data.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 33e56ae84e35..041f2d9ec972 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3833,9 +3833,13 @@ static int f2fs_is_file_aligned(struct inode *inode)
 
 		if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
 			nr_pblocks & (blocks_per_sec - 1)) {
-			f2fs_err(sbi, "Swapfile does not align to section");
-			ret = -EINVAL;
-			goto out;
+			if (f2fs_is_pinned_file(inode)) {
+				f2fs_err(sbi, "Swapfile does not align to section");
+				ret = -EINVAL;
+				goto out;
+			}
+			f2fs_warn(sbi, "Swapfile does not align to section: \n"
+				"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()");
 		}
 
 		cur_lblock += nr_pblocks;
-- 
2.31.1.607.g51e8a6a459-goog

[f2fs-dev] [PATCH] f2fs: avoid swapon failure by giving a warning first

[Jaegeuk Kim]

The final solution can be migrating blocks to form a section-aligned file
internally. Meanwhile, let's ask users to do that when preparing the swap
file initially like:
1) create()
2) ioctl(F2FS_IOC_SET_PIN_FILE)
3) fallocate()

Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/data.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 33e56ae84e35..041f2d9ec972 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3833,9 +3833,13 @@ static int f2fs_is_file_aligned(struct inode *inode)
 
 		if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
 			nr_pblocks & (blocks_per_sec - 1)) {
-			f2fs_err(sbi, "Swapfile does not align to section");
-			ret = -EINVAL;
-			goto out;
+			if (f2fs_is_pinned_file(inode)) {
+				f2fs_err(sbi, "Swapfile does not align to section");
+				ret = -EINVAL;
+				goto out;
+			}
+			f2fs_warn(sbi, "Swapfile does not align to section: \n"
+				"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()");
 		}
 
 		cur_lblock += nr_pblocks;
-- 
2.31.1.607.g51e8a6a459-goog



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Re: [f2fs-dev] [PATCH] f2fs: avoid swapon failure by giving a warning first

[Chao Yu]

On 2021/5/12 5:43, Jaegeuk Kim wrote:
> The final solution can be migrating blocks to form a section-aligned file
> internally. Meanwhile, let's ask users to do that when preparing the swap
> file initially like:
> 1) create()
> 2) ioctl(F2FS_IOC_SET_PIN_FILE)
> 3) fallocate()

Let me take a look how to migrate unaligned swapfile during swapon(). :)

> 
> Reported-by: kernel test robot <oliver.sang@intel.com>
> Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <yuchao0@huawei.com>

Thanks,

Re: [f2fs-dev] [PATCH] f2fs: avoid swapon failure by giving a warning first

[Chao Yu]

On 2021/5/12 5:43, Jaegeuk Kim wrote:
> The final solution can be migrating blocks to form a section-aligned file
> internally. Meanwhile, let's ask users to do that when preparing the swap
> file initially like:
> 1) create()
> 2) ioctl(F2FS_IOC_SET_PIN_FILE)
> 3) fallocate()

Let me take a look how to migrate unaligned swapfile during swapon(). :)

> 
> Reported-by: kernel test robot <oliver.sang@intel.com>
> Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <yuchao0@huawei.com>

Thanks,


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Re: [f2fs-dev] [PATCH] f2fs: avoid swapon failure by giving a warning first

[Chao Yu]

On 2021/5/12 9:28, Chao Yu wrote:
> On 2021/5/12 5:43, Jaegeuk Kim wrote:
>> The final solution can be migrating blocks to form a section-aligned file
>> internally. Meanwhile, let's ask users to do that when preparing the swap
>> file initially like:
>> 1) create()
>> 2) ioctl(F2FS_IOC_SET_PIN_FILE)
>> 3) fallocate()
> 
> Let me take a look how to migrate unaligned swapfile during swapon(). :)
> 
>>
>> Reported-by: kernel test robot <oliver.sang@intel.com>
>> Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
>> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> 
> Reviewed-by: Chao Yu <yuchao0@huawei.com>

Wait, shouldn't this cover check_swap_activate_fast() as well?

Thanks,

> 
> Thanks,
> 
> 
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
> .
> 

Re: [f2fs-dev] [PATCH] f2fs: avoid swapon failure by giving a warning first

[Chao Yu]

On 2021/5/12 9:28, Chao Yu wrote:
> On 2021/5/12 5:43, Jaegeuk Kim wrote:
>> The final solution can be migrating blocks to form a section-aligned file
>> internally. Meanwhile, let's ask users to do that when preparing the swap
>> file initially like:
>> 1) create()
>> 2) ioctl(F2FS_IOC_SET_PIN_FILE)
>> 3) fallocate()
> 
> Let me take a look how to migrate unaligned swapfile during swapon(). :)
> 
>>
>> Reported-by: kernel test robot <oliver.sang@intel.com>
>> Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
>> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> 
> Reviewed-by: Chao Yu <yuchao0@huawei.com>

Wait, shouldn't this cover check_swap_activate_fast() as well?

Thanks,

> 
> Thanks,
> 
> 
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
> .
> 


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Re: [PATCH v2] f2fs: avoid swapon failure by giving a warning first

[Jaegeuk Kim]

The final solution can be migrating blocks to form a section-aligned file
internally. Meanwhile, let's ask users to do that when preparing the swap
file initially like:
1) create()
2) ioctl(F2FS_IOC_SET_PIN_FILE)
3) fallocate()

Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
v2:
 - fix to warn out once
 - cover check_swap_activate_fast

 fs/f2fs/data.c | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 33e56ae84e35..41e260680b27 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3801,6 +3801,7 @@ static int f2fs_is_file_aligned(struct inode *inode)
 	block_t pblock;
 	unsigned long nr_pblocks;
 	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
+	unsigned int not_aligned = 0;
 	int ret = 0;
 
 	cur_lblock = 0;
@@ -3833,13 +3834,20 @@ static int f2fs_is_file_aligned(struct inode *inode)
 
 		if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
 			nr_pblocks & (blocks_per_sec - 1)) {
-			f2fs_err(sbi, "Swapfile does not align to section");
-			ret = -EINVAL;
-			goto out;
+			if (f2fs_is_pinned_file(inode)) {
+				f2fs_err(sbi, "Swapfile does not align to section");
+				ret = -EINVAL;
+				goto out;
+			}
+			not_aligned++;
 		}
 
 		cur_lblock += nr_pblocks;
 	}
+	if (not_aligned)
+		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
+			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
+			not_aligned);
 out:
 	return ret;
 }
@@ -3858,6 +3866,7 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
 	int nr_extents = 0;
 	unsigned long nr_pblocks;
 	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
+	unsigned int not_aligned = 0;
 	int ret = 0;
 
 	/*
@@ -3896,9 +3905,12 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
 
 		if ((pblock - SM_I(sbi)->main_blkaddr) & (blocks_per_sec - 1) ||
 				nr_pblocks & (blocks_per_sec - 1)) {
-			f2fs_err(sbi, "Swapfile does not align to section");
-			ret = -EINVAL;
-			goto out;
+			if (f2fs_is_pinned_file(inode)) {
+				f2fs_err(sbi, "Swapfile does not align to section");
+				ret = -EINVAL;
+				goto out;
+			}
+			not_aligned++;
 		}
 
 		if (cur_lblock + nr_pblocks >= sis->max)
@@ -3927,6 +3939,11 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
 	sis->max = cur_lblock;
 	sis->pages = cur_lblock - 1;
 	sis->highest_bit = cur_lblock - 1;
+
+	if (not_aligned)
+		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
+			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
+			not_aligned);
 out:
 	return ret;
 }
-- 
2.31.1.607.g51e8a6a459-goog

Re: [f2fs-dev] [PATCH v2] f2fs: avoid swapon failure by giving a warning first

[Jaegeuk Kim]

The final solution can be migrating blocks to form a section-aligned file
internally. Meanwhile, let's ask users to do that when preparing the swap
file initially like:
1) create()
2) ioctl(F2FS_IOC_SET_PIN_FILE)
3) fallocate()

Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
v2:
 - fix to warn out once
 - cover check_swap_activate_fast

 fs/f2fs/data.c | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 33e56ae84e35..41e260680b27 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -3801,6 +3801,7 @@ static int f2fs_is_file_aligned(struct inode *inode)
 	block_t pblock;
 	unsigned long nr_pblocks;
 	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
+	unsigned int not_aligned = 0;
 	int ret = 0;
 
 	cur_lblock = 0;
@@ -3833,13 +3834,20 @@ static int f2fs_is_file_aligned(struct inode *inode)
 
 		if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
 			nr_pblocks & (blocks_per_sec - 1)) {
-			f2fs_err(sbi, "Swapfile does not align to section");
-			ret = -EINVAL;
-			goto out;
+			if (f2fs_is_pinned_file(inode)) {
+				f2fs_err(sbi, "Swapfile does not align to section");
+				ret = -EINVAL;
+				goto out;
+			}
+			not_aligned++;
 		}
 
 		cur_lblock += nr_pblocks;
 	}
+	if (not_aligned)
+		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
+			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
+			not_aligned);
 out:
 	return ret;
 }
@@ -3858,6 +3866,7 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
 	int nr_extents = 0;
 	unsigned long nr_pblocks;
 	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
+	unsigned int not_aligned = 0;
 	int ret = 0;
 
 	/*
@@ -3896,9 +3905,12 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
 
 		if ((pblock - SM_I(sbi)->main_blkaddr) & (blocks_per_sec - 1) ||
 				nr_pblocks & (blocks_per_sec - 1)) {
-			f2fs_err(sbi, "Swapfile does not align to section");
-			ret = -EINVAL;
-			goto out;
+			if (f2fs_is_pinned_file(inode)) {
+				f2fs_err(sbi, "Swapfile does not align to section");
+				ret = -EINVAL;
+				goto out;
+			}
+			not_aligned++;
 		}
 
 		if (cur_lblock + nr_pblocks >= sis->max)
@@ -3927,6 +3939,11 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
 	sis->max = cur_lblock;
 	sis->pages = cur_lblock - 1;
 	sis->highest_bit = cur_lblock - 1;
+
+	if (not_aligned)
+		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
+			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
+			not_aligned);
 out:
 	return ret;
 }
-- 
2.31.1.607.g51e8a6a459-goog



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Re: [f2fs-dev] [PATCH v2] f2fs: avoid swapon failure by giving a warning first

[Chao Yu]

Jaegeuk,

On 2021/5/12 12:00, Jaegeuk Kim wrote:
> The final solution can be migrating blocks to form a section-aligned file
> internally. Meanwhile, let's ask users to do that when preparing the swap
> file initially like:
> 1) create()
> 2) ioctl(F2FS_IOC_SET_PIN_FILE)
> 3) fallocate()
> 
> Reported-by: kernel test robot <oliver.sang@intel.com>
> Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <yuchao0@huawei.com>

I've not tested yet though, any comments on below patch?

[PATCH RFC] f2fs: support migrating swapfile in aligned write mode

Thanks,

> ---
> v2:
>   - fix to warn out once
>   - cover check_swap_activate_fast
> 
>   fs/f2fs/data.c | 29 +++++++++++++++++++++++------
>   1 file changed, 23 insertions(+), 6 deletions(-)
> 
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 33e56ae84e35..41e260680b27 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -3801,6 +3801,7 @@ static int f2fs_is_file_aligned(struct inode *inode)
>   	block_t pblock;
>   	unsigned long nr_pblocks;
>   	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
> +	unsigned int not_aligned = 0;
>   	int ret = 0;
>   
>   	cur_lblock = 0;
> @@ -3833,13 +3834,20 @@ static int f2fs_is_file_aligned(struct inode *inode)
>   
>   		if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
>   			nr_pblocks & (blocks_per_sec - 1)) {
> -			f2fs_err(sbi, "Swapfile does not align to section");
> -			ret = -EINVAL;
> -			goto out;
> +			if (f2fs_is_pinned_file(inode)) {
> +				f2fs_err(sbi, "Swapfile does not align to section");
> +				ret = -EINVAL;
> +				goto out;
> +			}
> +			not_aligned++;
>   		}
>   
>   		cur_lblock += nr_pblocks;
>   	}
> +	if (not_aligned)
> +		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
> +			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
> +			not_aligned);
>   out:
>   	return ret;
>   }
> @@ -3858,6 +3866,7 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
>   	int nr_extents = 0;
>   	unsigned long nr_pblocks;
>   	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
> +	unsigned int not_aligned = 0;
>   	int ret = 0;
>   
>   	/*
> @@ -3896,9 +3905,12 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
>   
>   		if ((pblock - SM_I(sbi)->main_blkaddr) & (blocks_per_sec - 1) ||
>   				nr_pblocks & (blocks_per_sec - 1)) {
> -			f2fs_err(sbi, "Swapfile does not align to section");
> -			ret = -EINVAL;
> -			goto out;
> +			if (f2fs_is_pinned_file(inode)) {
> +				f2fs_err(sbi, "Swapfile does not align to section");
> +				ret = -EINVAL;
> +				goto out;
> +			}
> +			not_aligned++;
>   		}
>   
>   		if (cur_lblock + nr_pblocks >= sis->max)
> @@ -3927,6 +3939,11 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
>   	sis->max = cur_lblock;
>   	sis->pages = cur_lblock - 1;
>   	sis->highest_bit = cur_lblock - 1;
> +
> +	if (not_aligned)
> +		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
> +			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
> +			not_aligned);
>   out:
>   	return ret;
>   }
> 

Re: [f2fs-dev] [PATCH v2] f2fs: avoid swapon failure by giving a warning first

[Chao Yu]

Jaegeuk,

On 2021/5/12 12:00, Jaegeuk Kim wrote:
> The final solution can be migrating blocks to form a section-aligned file
> internally. Meanwhile, let's ask users to do that when preparing the swap
> file initially like:
> 1) create()
> 2) ioctl(F2FS_IOC_SET_PIN_FILE)
> 3) fallocate()
> 
> Reported-by: kernel test robot <oliver.sang@intel.com>
> Fixes: 36e4d95891ed ("f2fs: check if swapfile is section-alligned")
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <yuchao0@huawei.com>

I've not tested yet though, any comments on below patch?

[PATCH RFC] f2fs: support migrating swapfile in aligned write mode

Thanks,

> ---
> v2:
>   - fix to warn out once
>   - cover check_swap_activate_fast
> 
>   fs/f2fs/data.c | 29 +++++++++++++++++++++++------
>   1 file changed, 23 insertions(+), 6 deletions(-)
> 
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 33e56ae84e35..41e260680b27 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -3801,6 +3801,7 @@ static int f2fs_is_file_aligned(struct inode *inode)
>   	block_t pblock;
>   	unsigned long nr_pblocks;
>   	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
> +	unsigned int not_aligned = 0;
>   	int ret = 0;
>   
>   	cur_lblock = 0;
> @@ -3833,13 +3834,20 @@ static int f2fs_is_file_aligned(struct inode *inode)
>   
>   		if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
>   			nr_pblocks & (blocks_per_sec - 1)) {
> -			f2fs_err(sbi, "Swapfile does not align to section");
> -			ret = -EINVAL;
> -			goto out;
> +			if (f2fs_is_pinned_file(inode)) {
> +				f2fs_err(sbi, "Swapfile does not align to section");
> +				ret = -EINVAL;
> +				goto out;
> +			}
> +			not_aligned++;
>   		}
>   
>   		cur_lblock += nr_pblocks;
>   	}
> +	if (not_aligned)
> +		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
> +			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
> +			not_aligned);
>   out:
>   	return ret;
>   }
> @@ -3858,6 +3866,7 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
>   	int nr_extents = 0;
>   	unsigned long nr_pblocks;
>   	unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
> +	unsigned int not_aligned = 0;
>   	int ret = 0;
>   
>   	/*
> @@ -3896,9 +3905,12 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
>   
>   		if ((pblock - SM_I(sbi)->main_blkaddr) & (blocks_per_sec - 1) ||
>   				nr_pblocks & (blocks_per_sec - 1)) {
> -			f2fs_err(sbi, "Swapfile does not align to section");
> -			ret = -EINVAL;
> -			goto out;
> +			if (f2fs_is_pinned_file(inode)) {
> +				f2fs_err(sbi, "Swapfile does not align to section");
> +				ret = -EINVAL;
> +				goto out;
> +			}
> +			not_aligned++;
>   		}
>   
>   		if (cur_lblock + nr_pblocks >= sis->max)
> @@ -3927,6 +3939,11 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
>   	sis->max = cur_lblock;
>   	sis->pages = cur_lblock - 1;
>   	sis->highest_bit = cur_lblock - 1;
> +
> +	if (not_aligned)
> +		f2fs_warn(sbi, "Swapfile (%u) is not align to section: \n"
> +			"\t1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
> +			not_aligned);
>   out:
>   	return ret;
>   }
> 


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