diff mbox series

[RFC,PKS/PMEM,26/58] fs/zonefs: Utilize new kmap_thread()

Message ID 20201009195033.3208459-27-ira.weiny@intel.com
State New, archived
Headers show
Series PMEM: Introduce stray write protection for PMEM | expand

Commit Message

Ira Weiny Oct. 9, 2020, 7:50 p.m. UTC
From: Ira Weiny <ira.weiny@intel.com>

The kmap() calls in this FS are localized to a single thread.  To avoid
the over head of global PKRS updates use the new kmap_thread() call.

Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 fs/zonefs/super.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Damien Le Moal Oct. 12, 2020, 2:30 a.m. UTC | #1
On 2020/10/10 4:52, ira.weiny@intel.com wrote:
> From: Ira Weiny <ira.weiny@intel.com>
> 
> The kmap() calls in this FS are localized to a single thread.  To avoid
> the over head of global PKRS updates use the new kmap_thread() call.
> 
> Cc: Damien Le Moal <damien.lemoal@wdc.com>
> Cc: Naohiro Aota <naohiro.aota@wdc.com>
> Signed-off-by: Ira Weiny <ira.weiny@intel.com>
> ---
>  fs/zonefs/super.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
> index 8ec7c8f109d7..2fd6c86beee1 100644
> --- a/fs/zonefs/super.c
> +++ b/fs/zonefs/super.c
> @@ -1297,7 +1297,7 @@ static int zonefs_read_super(struct super_block *sb)
>  	if (ret)
>  		goto free_page;
>  
> -	super = kmap(page);
> +	super = kmap_thread(page);
>  
>  	ret = -EINVAL;
>  	if (le32_to_cpu(super->s_magic) != ZONEFS_MAGIC)
> @@ -1349,7 +1349,7 @@ static int zonefs_read_super(struct super_block *sb)
>  	ret = 0;
>  
>  unmap:
> -	kunmap(page);
> +	kunmap_thread(page);
>  free_page:
>  	__free_page(page);
>  
> 

acked-by: Damien Le Moal <damien.lemoal@wdc.com>
diff mbox series

Patch

diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index 8ec7c8f109d7..2fd6c86beee1 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -1297,7 +1297,7 @@  static int zonefs_read_super(struct super_block *sb)
 	if (ret)
 		goto free_page;
 
-	super = kmap(page);
+	super = kmap_thread(page);
 
 	ret = -EINVAL;
 	if (le32_to_cpu(super->s_magic) != ZONEFS_MAGIC)
@@ -1349,7 +1349,7 @@  static int zonefs_read_super(struct super_block *sb)
 	ret = 0;
 
 unmap:
-	kunmap(page);
+	kunmap_thread(page);
 free_page:
 	__free_page(page);