From: Christoph Hellwig <hch@infradead.org>
To: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [PATCH 1/3] f2fs: add fast path for find_next_{zero}bit
Date: Fri, 21 Oct 2016 03:35:37 -0700 [thread overview]
Message-ID: <20161021103537.GA14327@infradead.org> (raw)
In-Reply-To: <20161021022847.55629-1-jaegeuk@kernel.org>
On Thu, Oct 20, 2016 at 07:28:45PM -0700, Jaegeuk Kim wrote:
> This patch adds checking the first two bits when searching zero or one bits to
> avoid costly find_next_{zero}bit operations.
Please fix this in the generic iplementations instead of adding your
local workarounds.
prev parent reply other threads:[~2016-10-21 10:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-21 2:28 [PATCH 1/3] f2fs: add fast path for find_next_{zero}bit Jaegeuk Kim
2016-10-21 2:28 ` Jaegeuk Kim
2016-10-21 2:28 ` [PATCH 2/3] f2fs: use __set_page_dirty_nobuffers directly Jaegeuk Kim
2016-10-21 2:28 ` Jaegeuk Kim
2016-11-02 7:34 ` [f2fs-dev] " Chao Yu
2016-11-02 7:34 ` Chao Yu
2016-11-02 17:23 ` Jaegeuk Kim
2016-11-02 17:23 ` [f2fs-dev] " Jaegeuk Kim
2016-11-03 9:50 ` Chao Yu
2016-11-03 9:50 ` Chao Yu
2016-11-03 17:57 ` Jaegeuk Kim
2016-11-04 15:51 ` Chao Yu
2016-11-04 15:51 ` [f2fs-dev] " Chao Yu
2016-10-21 2:28 ` [PATCH 3/3] f2fs: remove percpu_count due to performance regression Jaegeuk Kim
2016-10-21 10:35 ` Christoph Hellwig [this message]
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