From: Dan Carpenter <dan.carpenter@oracle.com>
To: Monam Agarwal <monamagarwal123@gmail.com>
Cc: gregkh@linuxfoundation.org, andreas.dilger@intel.com,
peter.p.waskiewicz.jr@intel.com, tao.peng@emc.com,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] Staging: lustre: Use of fls to find last set bit
Date: Mon, 13 Jan 2014 11:21:24 +0300 [thread overview]
Message-ID: <20140113082124.GC7444@mwanda> (raw)
In-Reply-To: <1389471351-31782-1-git-send-email-monamagarwal123@gmail.com>
On Sun, Jan 12, 2014 at 01:45:51AM +0530, Monam Agarwal wrote:
> This introduces fls in lustre/ldlm/ldlm_extent.c
> to find the last set bit.
>
> Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
> ---
> Changes since v1:
> * Incorrect commit message
> * Use of fls function
> Changes since v2:
> * Removal of extra variable
>
> drivers/staging/lustre/lustre/ldlm/ldlm_extent.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c b/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c
> index ac5d66a..a4f382d 100644
> --- a/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c
> +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_extent.c
> @@ -153,7 +153,7 @@ static inline int lock_mode_to_index(ldlm_mode_t mode)
>
> LASSERT(mode != 0);
> LASSERT(IS_PO2(mode));
> - for (index = -1; mode; index++, mode >>= 1) ;
> + index = fls(mode)-1;
Put spaces around math operations. Just cut and paste what Joe wrote.
regards,
dan carpenter
prev parent reply other threads:[~2014-01-13 8:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-11 11:41 [PATCH 1/2] Staging: lustre: Removal of Unnecessary white spaces Monam Agarwal
2014-01-11 17:23 ` Joe Perches
2014-01-11 19:32 ` [PATCH v2] Staging: lustre: Use of fls to find last set bit Monam Agarwal
2014-01-11 20:02 ` Joe Perches
2014-01-11 20:15 ` [PATCH v3] " Monam Agarwal
2014-01-13 8:21 ` Dan Carpenter [this message]
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