lkml.org 
[lkml]   [2010]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [patch 15/28] fs: scale inode alias list
From
On Tue, Nov 16, 2010 at 6:09 AM, Nick Piggin <npiggin@kernel.dk> wrote:

> @@ -290,13 +300,18 @@ void dput(struct dentry *dentry)
>                         * want to reduce dcache_lock anyway so this will
>                         * get improved.
>                         */
> +drop1:
>                        spin_unlock(&dentry->d_lock);
>                        goto repeat;
>                }
> -               if (parent && !spin_trylock(&parent->d_lock)) {
> -                       spin_unlock(&dentry->d_lock);
> +               if (!spin_trylock(&dcache_inode_lock)) {
> +drop2:
>                        spin_unlock(&dcache_lock);
> -                       goto repeat;
> +                       goto drop1;
> +               }
> +               if (parent && !spin_trylock(&parent->d_lock)) {
> +                       spin_unlock(&dcache_inode_lock);
> +                       goto drop2;
>                }
>        }
>        dentry->d_count--;

Another ugh moment. But it gets better in patches 18 and 20.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2010-11-19 20:45    [W:0.842 / U:0.152 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site