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Message-ID: <20171226165440.tv6inwa2fgk3bfy6@node.shutemov.name> Date: Tue, 26 Dec 2017 19:54:40 +0300 From: "Kirill A. Shutemov" <kirill@...temov.name> To: Matthew Wilcox <willy@...radead.org> Cc: linux-kernel@...r.kernel.org, Matthew Wilcox <mawilcox@...rosoft.com>, Ross Zwisler <ross.zwisler@...ux.intel.com>, David Howells <dhowells@...hat.com>, Shaohua Li <shli@...nel.org>, Jens Axboe <axboe@...nel.dk>, Rehas Sachdeva <aquannie@...il.com>, Marc Zyngier <marc.zyngier@....com>, linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, linux-nilfs@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-xfs@...r.kernel.org, linux-usb@...r.kernel.org, linux-raid@...r.kernel.org Subject: Re: [PATCH v5 03/78] xarray: Add the xa_lock to the radix_tree_root On Fri, Dec 15, 2017 at 02:03:35PM -0800, Matthew Wilcox wrote: > From: Matthew Wilcox <mawilcox@...rosoft.com> > > This results in no change in structure size on 64-bit x86 as it fits in > the padding between the gfp_t and the void *. The patch does more than described in the subject and commit message. At first I was confused why do you need to touch idr here. It took few minutes to figure it out. Could you please add more into commit message about lockname and xa_ locking interface since you introduce it here? -- Kirill A. Shutemov
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