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SubjectRe: [PATCH RFC PKS/PMEM 26/58] fs/zonefs: Utilize new kmap_thread()
Date
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>

--
Damien Le Moal
Western Digital Research

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