linux-ext4 - Re: [PATCH] ext4: Optimize case-insensitive lookups

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Message-ID: <20190620040156.GB15783@mit.edu>
Date:   Thu, 20 Jun 2019 00:01:56 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Gabriel Krisman Bertazi <krisman@...labora.com>
Cc:     linux-ext4@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH] ext4: Optimize case-insensitive lookups

On Mon, Jun 17, 2019 at 03:02:40PM -0400, Gabriel Krisman Bertazi wrote:
> Temporarily cache a casefolded version of the file name under lookup in
> ext4_filename, to avoid repeatedly casefolding it.  I got up to 30%
> speedup on lookups of large directories (>100k entries), depending on
> the length of the string under lookup.
> 
> v2:
>   - Dinamically allocate space for the casefolded version.
> 
> Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com>

Thanks, applied.

						- Ted