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Date: Thu, 6 Apr 2017 06:31:03 -0700 From: Matthew Wilcox <willy@...radead.org> To: NeilBrown <neilb@...e.com> Cc: Jeff Layton <jlayton@...hat.com>, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org, akpm@...ux-foundation.org, tytso@....edu, jack@...e.cz Subject: Re: [RFC PATCH 0/4] fs: introduce new writeback error tracking infrastructure and convert ext4 to use it On Thu, Apr 06, 2017 at 03:12:42PM +1000, NeilBrown wrote: > On Wed, Apr 05 2017, Matthew Wilcox wrote: > > > On Thu, Apr 06, 2017 at 10:02:48AM +1000, NeilBrown wrote: > >> If you are concerned about space in 'struct address_space', just prune > >> some wastage. > > > > I'm trying to (via wlists). still buggy though. > > Cool. > (I wonder what a wlist is.... weighted list?) A homonym ;-) Waitlists. Yet Another Variation of a doubly linked list. This variation has only a single head pointer (like the hlist), allows O(1) deletion from any point in the list (but requires that you know the head of the list). The tail of the list is pointed to by head->prev. http://git.infradead.org/users/willy/linux-dax.git/shortlog/refs/heads/wlist It also needs updating to the latest tree; WW locks got revamped.
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