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Date: Mon, 15 Dec 2014 11:19:41 -0800 From: "Darrick J. Wong" <darrick.wong@...cle.com> To: "Theodore Ts'o" <tytso@....edu> Cc: linux-ext4@...r.kernel.org Subject: Re: [PATCH 31/47] libext2fs/e2fsck: provide routines to read-ahead metadata On Mon, Dec 15, 2014 at 12:36:28PM -0500, Theodore Ts'o wrote: > On Fri, Nov 07, 2014 at 01:54:07PM -0800, Darrick J. Wong wrote: > > > > v2: Add an API to create a dblist with a given number of list elements > > pre-allocated. This enables us to save ~2ms per call to > > e2fsck_readahead() (assuming a 2MB RA buffer) by not having to > > repeatedly call ext2_resize_mem as we add blocks to the list. > > I don't see the API to create a dblist with a specified number of list > elements? It should be pretty trivial, given make_dblist() but I > don't see it in this patch? Ugh, part of the commit message came off. There should be after that: v3: Instead of creating dblists of arbitrary size, change the dblist iterator to allow iterating a sub-range. This eliminates a lot of unnecessary list copying during e2fsck part2. Sorry about that. :/ --D > > - Ted > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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