lkml.org 
[lkml]   [2013]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [f2fs-dev] [PATCH 2/5] f2fs: add unlikely macro for compiler optimization
From
Date
Hi,

Could you make a patch to add *unlikely* as many as possible across the
whole source files at once?
It is wasteful to add it with a bunch of patches at multiple times.

And please write descriptions for all the patches even if nothing is
special.
In this case, why should we set *unlikely* for checking this condition?

Thanks,

2013-11-28 (목), 15:42 +0800, Chao Yu:
> Signed-off-by: Chao Yu <chao2.yu@samsung.com>
> ---
> fs/f2fs/node.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> index 0fe9a97..954155b 100644
> --- a/fs/f2fs/node.c
> +++ b/fs/f2fs/node.c
> @@ -1160,7 +1160,7 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
> struct page *page = pvec.pages[i];
>
> /* until radix tree lookup accepts end_index */
> - if (page->index > end)
> + if (unlikely(page->index > end))
> continue;
>
> if (ino && ino_of_node(page) == ino) {

--
Jaegeuk Kim
Samsung

--
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: 2013-11-29 11:41    [W:0.056 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site