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From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Theodore Ts'o" <tytso@mit.edu>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: [GIT PULL] ext4 bug fixes for 3.18
Date: Fri, 31 Oct 2014 16:26:16 -0700	[thread overview]
Message-ID: <CA+55aFwiFx6ejtnEvZYJewHaskwjTr39bPstFvWYimqi6hMCsQ@mail.gmail.com> (raw)
In-Reply-To: <20141031214949.GA644@thunk.org>

On Fri, Oct 31, 2014 at 2:49 PM, Theodore Ts'o <tytso@mit.edu> wrote:
>
> Theodore Ts'o (1):
>       jbd2: use a better hash function for the revoke table

Does it really make sense to use hash_u64()? It can be quite expensive
(mainly on 32-bit targets), and since the low bits are where all the
information is anyway, I'd suggest using hash_32() here even if the
block number in theory can have a few bits above the 32-bit mark.

Anyway, pulled, but I just reacted to that small detail.

                      Linus

  reply	other threads:[~2014-10-31 23:26 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-31 21:49 [GIT PULL] ext4 bug fixes for 3.18 Theodore Ts'o
2014-10-31 23:26 ` Linus Torvalds [this message]
2014-11-01 13:38   ` Theodore Ts'o
2014-11-01 16:29     ` Linus Torvalds
2014-11-01 18:29       ` Theodore Ts'o
  -- strict thread matches above, loose matches on Subject: below --
2014-12-02  3:43 Theodore Ts'o

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