Hi Yunlei,

It's just one atomic operation.
Are there performance or race condition issues?

Thanks,

On Fri, May 13, 2016 at 02:57:43PM +0800, Yunlei He wrote:
> No need inc dirty pages under inode lock
> 
> Signed-off-by: Yunlei He <[email protected]>
> ---
>  fs/f2fs/checkpoint.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
> index 6402e93..3da6499 100644
> --- a/fs/f2fs/checkpoint.c
> +++ b/fs/f2fs/checkpoint.c
> @@ -787,9 +787,9 @@ void update_dirty_page(struct inode *inode, struct page 
> *page)
>  
>       spin_lock(&sbi->inode_lock[type]);
>       __add_dirty_inode(inode, type);
> -     inode_inc_dirty_pages(inode);
>       spin_unlock(&sbi->inode_lock[type]);
>  
> +     inode_inc_dirty_pages(inode);
>       SetPagePrivate(page);
>       f2fs_trace_pid(page);
>  }
> -- 
> 1.9.1

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