Messages in this thread | | | Subject | Re: [PATCH 31/34] nfs: convert put_page() to put_user_page*() | From | Calum Mackay <> | Date | Sat, 3 Aug 2019 02:27:55 +0100 |
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On 02/08/2019 3:20 am, john.hubbard@gmail.com wrote: > From: John Hubbard <jhubbard@nvidia.com> > > For pages that were retained via get_user_pages*(), release those pages > via the new put_user_page*() routines, instead of via put_page() or > release_pages(). > > This is part a tree-wide conversion, as described in commit fc1d8e7cca2d > ("mm: introduce put_user_page*(), placeholder versions"). > > Cc: Trond Myklebust <trond.myklebust@hammerspace.com> > Cc: Anna Schumaker <anna.schumaker@netapp.com> > Cc: linux-nfs@vger.kernel.org > Signed-off-by: John Hubbard <jhubbard@nvidia.com> > --- > fs/nfs/direct.c | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c > index 0cb442406168..b00b89dda3c5 100644 > --- a/fs/nfs/direct.c > +++ b/fs/nfs/direct.c > @@ -278,9 +278,7 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) > > static void nfs_direct_release_pages(struct page **pages, unsigned int npages) > { > - unsigned int i; > - for (i = 0; i < npages; i++) > - put_page(pages[i]); > + put_user_pages(pages, npages); > }
Since it's static, and only called twice, might it be better to change its two callers [nfs_direct_{read,write}_schedule_iovec()] to call put_user_pages() directly, and remove nfs_direct_release_pages() entirely?
thanks, calum.
> > void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, >
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