[RFC] jffs2: use cond_resched() instead of yield()
Artem Bityutskiy
dedekind1 at gmail.com
Wed Sep 1 14:35:51 EDT 2010
This 'yield()' was introduced by dwmw2, so he may have strong feelings
about it. CCed.
On Wed, 2010-09-01 at 18:03 +0200, Wolfram Sang wrote:
> yield() has different semantics meanwhile and even causes RT-kernels to
> BUG. Replace the only appearance left in jffs2.
>
> Signed-off-by: Wolfram Sang <w.sang at pengutronix.de>
> Cc: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
> Cc: Ingo Molnar <mingo at elte.hu>
> ---
>
> The aforementioned BUG() showed up in one of our customer's RT-projects. While
> this could be handled by rearranging his thread-priorities, I wondered if such
> a patch would be worthwhile, still. Reading through the material covering
> yield() and related replacements, I believe this patch should be appropriate.
> Please say if I missed some side-effects.
>
> fs/jffs2/erase.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
> index abac961..e513f19 100644
> --- a/fs/jffs2/erase.c
> +++ b/fs/jffs2/erase.c
> @@ -151,7 +151,7 @@ int jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
> }
>
> /* Be nice */
> - yield();
> + cond_resched();
> mutex_lock(&c->erase_free_sem);
> spin_lock(&c->erase_completion_lock);
> }
--
Best Regards,
Artem Bityutskiy (Битюцкий Артём)
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