From: Ted Ts'o <tytso@mit.edu>
To: Tao Ma <tm@tao.ma>
Cc: linux-ext4@vger.kernel.org
Subject: Re: [PATCH] ext4: Use s_inodes_per_block directly in __ext4_get_inode_loc.
Date: Sun, 8 May 2011 21:56:57 -0400 [thread overview]
Message-ID: <20110509015657.GE4138@thunk.org> (raw)
In-Reply-To: <1301326873-9551-2-git-send-email-tm@tao.ma>
On Mon, Mar 28, 2011 at 11:41:13PM +0800, Tao Ma wrote:
> From: Tao Ma <boyu.mt@taobao.com>
>
> In __ext4_get_inode_loc, we calculate inodes_per_block every time
> by EXT4_BLOCK_SIZE(sb) / EXT4_INODE_SIZE(sb). AFAICS, this function
> is really a hot path for ext4, so we'd better use s_inodes_per_block
> directly instead of calculating every time.
>
> Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Added to the ext4 tree, thanks.
- Ted
next prev parent reply other threads:[~2011-05-09 1:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 15:41 [PATCH] ext4: Use EXT4FS_DEBUG instead of EXT4_DEBUG in fsync.c Tao Ma
2011-03-28 15:41 ` [PATCH] ext4: Use s_inodes_per_block directly in __ext4_get_inode_loc Tao Ma
2011-05-09 1:56 ` Ted Ts'o [this message]
2011-05-09 1:55 ` [PATCH] ext4: Use EXT4FS_DEBUG instead of EXT4_DEBUG in fsync.c Ted Ts'o
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