linux-ext4 - Re: [PATCH] e2fsck: avoid unnecessary close/reopen for non-MMP filesystems

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Date:	Thu, 22 Mar 2012 18:03:30 -0600
From:	Andreas Dilger <adilger@...mcloud.com>
To:	Theodore Ts'o <tytso@....edu>
Cc:	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	Theodore Ts'o <tytso@....edu>
Subject: Re: [PATCH] e2fsck: avoid unnecessary close/reopen for non-MMP filesystems

On 2012-03-21, at 21:21, Theodore Ts'o <tytso@....edu> wrote:
> For file systems that do not use MMP, there's no reason to close the
> file system and then re-open the file system a second time, since
> EXT2_FLAG_SKIP_MMP has no meaning for non-MMP file systems anyway.
> 
> Signed-off-by: "Theodore Ts'o" <tytso@....edu>

Not sure how those two identical checks ended up next to each other. 

Acked-by: Andreas Dilger <adilger@...mcloud.com>

> ---
> e2fsck/unix.c |    8 +++-----
> 1 files changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/e2fsck/unix.c b/e2fsck/unix.c
> index 59c52ff..d0b10d4 100644
> --- a/e2fsck/unix.c
> +++ b/e2fsck/unix.c
> @@ -1398,12 +1398,10 @@ failure:
>        (flags & EXT2_FLAG_SKIP_MMP)) {
>        if (e2fsck_check_mmp(fs, ctx))
>            fatal_error(ctx, 0);
> -    }
> 
> -     /*
> -      * Restart in order to reopen fs but this time start mmp.
> -      */
> -    if (flags & EXT2_FLAG_SKIP_MMP) {
> +        /*
> +         * Restart in order to reopen fs but this time start mmp.
> +         */
>        ext2fs_close(fs);
>        ctx->fs = NULL;
>        flags &= ~EXT2_FLAG_SKIP_MMP;
> -- 
> 1.7.9.107.g97f9a
> 
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