lkml.org 
[lkml]   [2020]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 02/30] dax: Add missing annotations ofr dax_read_lock() and dax_read_unlock()
From
Date


On 2/24/20 7:16 AM, Jules Irenge wrote:
> Sparse reports warning at dax_read_lock() and at dax_read_unlock()
>
> warning: context imbalance in dax_read_lock() - wrong count at exit
> warning: context imbalance in dax_read_unlock() - unexpected unlock
>
> The root cause is the mnissing annotations at dax_read_lock()
> and dax_read_unlock()
s/mnissing/missing
> Add the missing __acquires(&dax_srcu) notations to dax_read_lock()
> Add the missing __releases(&dax_srcu) annotation to dax_read_unlock()
>
> Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
> ---
> drivers/dax/super.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/dax/super.c b/drivers/dax/super.c
> index 26a654dbc69a..f872a2fb98d4 100644
> --- a/drivers/dax/super.c
> +++ b/drivers/dax/super.c
> @@ -28,13 +28,13 @@ static struct super_block *dax_superblock __read_mostly;
> static struct hlist_head dax_host_list[DAX_HASH_SIZE];
> static DEFINE_SPINLOCK(dax_host_lock);
>
> -int dax_read_lock(void)
> +int dax_read_lock(void) __acquires(&dax_srcu)
> {
> return srcu_read_lock(&dax_srcu);
> }
> EXPORT_SYMBOL_GPL(dax_read_lock);
>
> -void dax_read_unlock(int id)
> +void dax_read_unlock(int id) __releases(&dax_srcu)
> {
> srcu_read_unlock(&dax_srcu, id);
> }

\
 
 \ /
  Last update: 2020-02-24 02:25    [W:0.181 / U:0.312 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site