diff mbox series

[5/6] NFS: direct-io: convert to FOLL_PIN pages

Message ID 20220227093434.2889464-6-jhubbard@nvidia.com (mailing list archive)
State New
Headers show
Series block, fs: convert most Direct IO cases to FOLL_PIN | expand

Commit Message

jhubbard.send.patches@gmail.com Feb. 27, 2022, 9:34 a.m. UTC 
From: John Hubbard <jhubbard@nvidia.com>

Convert nfs-direct to use pin_user_pages_fast(), and unpin_user_pages(),
in place of get_user_pages_fast() and put_page().

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 fs/nfs/direct.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)
diff mbox series

Patch

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index eabfdab543c8..42111a75c0f7 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -177,13 +177,6 @@  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)
-{
-	unsigned int i;
-	for (i = 0; i < npages; i++)
-		put_page(pages[i]);
-}
-
 void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
 			      struct nfs_direct_req *dreq)
 {
@@ -367,7 +360,7 @@  static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
 		size_t pgbase;
 		unsigned npages, i;
 
-		result = iov_iter_get_pages_alloc(iter, &pagevec, 
+		result = iov_iter_pin_pages_alloc(iter, &pagevec,
 						  rsize, &pgbase);
 		if (result < 0)
 			break;
@@ -398,7 +391,7 @@  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);
+		unpin_user_pages(pagevec, npages);
 		kvfree(pagevec);
 		if (result < 0)
 			break;
@@ -811,7 +804,7 @@  static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
 		size_t pgbase;
 		unsigned npages, i;
 
-		result = iov_iter_get_pages_alloc(iter, &pagevec, 
+		result = iov_iter_pin_pages_alloc(iter, &pagevec,
 						  wsize, &pgbase);
 		if (result < 0)
 			break;
@@ -850,7 +843,7 @@  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);
+		unpin_user_pages(pagevec, npages);
 		kvfree(pagevec);
 		if (result < 0)
 			break;