Re: [PATCH 31/34] nfs: convert put_page() to put_user_page*()
From: John Hubbard <jhubbard@nvidia.com>
Date: 2019-08-03 01:41:52
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Subsystem:
filesystems (vfs and infrastructure), nfs, sunrpc, and lockd clients, the rest · Maintainers:
Alexander Viro, Christian Brauner, Trond Myklebust, Anna Schumaker, Linus Torvalds
On 8/2/19 6:27 PM, Calum Mackay wrote:
On 02/08/2019 3:20 am, john.hubbard@gmail.com wrote:
...
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.quoted
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
Hi Calum, Absolutely! Is it OK to add your reviewed-by, with the following incremental patch made to this one?
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index b00b89dda3c5..c0c1b9f2c069 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c@@ -276,11 +276,6 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) return nfs_file_direct_write(iocb, iter); } -static void nfs_direct_release_pages(struct page **pages, unsigned int npages) -{ - put_user_pages(pages, npages); -} - void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, struct nfs_direct_req *dreq) {
@@ -510,7 +505,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq, pos += req_len; dreq->bytes_left -= req_len; } - nfs_direct_release_pages(pagevec, npages); + put_user_pages(pagevec, npages); kvfree(pagevec); if (result < 0) break;
@@ -933,7 +928,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, pos += req_len; dreq->bytes_left -= req_len; } - nfs_direct_release_pages(pagevec, npages); + put_user_pages(pagevec, npages); kvfree(pagevec); if (result < 0) break;
thanks, -- John Hubbard NVIDIA