Re: [PATCH 13/15] parallel lookups machinery, part 3

2016-04-18 Thread J. Bruce Fields
On Sat, Apr 16, 2016 at 01:55:25AM +0100, Al Viro wrote: > From: Al Viro > > We will need to be able to check if there is an in-lookup > dentry with matching parent/name. Right now it's impossible, > but as soon as start locking directories shared such beasts > will appear. > > Add a secondary

[PATCH 13/15] parallel lookups machinery, part 3

2016-04-15 Thread Al Viro
From: Al Viro We will need to be able to check if there is an in-lookup dentry with matching parent/name. Right now it's impossible, but as soon as start locking directories shared such beasts will appear. Add a secondary hash for locating those. Hash chains go through the same space where d_a