iov_iter: remove iov_iter_get_pages and iov_iter_get_pages_alloc

Now that the direct I/O helpers have switched to use
iov_iter_extract_pages, these helpers are unused.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20230614140341.521331-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 60c342b..8e7d2c4 100644 (file)
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -277,14 +277,8 @@ void iov_iter_bvec(struct iov_iter *i, unsigned int direction, const struct bio_
 void iov_iter_discard(struct iov_iter *i, unsigned int direction, size_t count);
 void iov_iter_xarray(struct iov_iter *i, unsigned int direction, struct xarray *xarray,
                     loff_t start, size_t count);
-ssize_t iov_iter_get_pages(struct iov_iter *i, struct page **pages,
-               size_t maxsize, unsigned maxpages, size_t *start,
-               iov_iter_extraction_t extraction_flags);
 ssize_t iov_iter_get_pages2(struct iov_iter *i, struct page **pages,
                        size_t maxsize, unsigned maxpages, size_t *start);
-ssize_t iov_iter_get_pages_alloc(struct iov_iter *i,
-               struct page ***pages, size_t maxsize, size_t *start,
-               iov_iter_extraction_t extraction_flags);
 ssize_t iov_iter_get_pages_alloc2(struct iov_iter *i, struct page ***pages,
                        size_t maxsize, size_t *start);
 int iov_iter_npages(const struct iov_iter *i, int maxpages);

diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index f18138e..b667b1e 100644 (file)
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1082,8 +1082,7 @@ static struct page *first_bvec_segment(const struct iov_iter *i,
 
 static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i,
                   struct page ***pages, size_t maxsize,
-                  unsigned int maxpages, size_t *start,
-                  iov_iter_extraction_t extraction_flags)
+                  unsigned int maxpages, size_t *start)
 {
        unsigned int n, gup_flags = 0;
 
@@ -1093,8 +1092,6 @@ static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i,
                return 0;
        if (maxsize > MAX_RW_COUNT)
                maxsize = MAX_RW_COUNT;
-       if (extraction_flags & ITER_ALLOW_P2PDMA)
-               gup_flags |= FOLL_PCI_P2PDMA;
 
        if (likely(user_backed_iter(i))) {
                unsigned long addr;
@@ -1144,49 +1141,31 @@ static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i,
        return -EFAULT;
 }
 
-ssize_t iov_iter_get_pages(struct iov_iter *i,
-                  struct page **pages, size_t maxsize, unsigned maxpages,
-                  size_t *start, iov_iter_extraction_t extraction_flags)
+ssize_t iov_iter_get_pages2(struct iov_iter *i, struct page **pages,
+               size_t maxsize, unsigned maxpages, size_t *start)
 {
        if (!maxpages)
                return 0;
        BUG_ON(!pages);
 
-       return __iov_iter_get_pages_alloc(i, &pages, maxsize, maxpages,
-                                         start, extraction_flags);
-}
-EXPORT_SYMBOL_GPL(iov_iter_get_pages);
-
-ssize_t iov_iter_get_pages2(struct iov_iter *i, struct page **pages,
-               size_t maxsize, unsigned maxpages, size_t *start)
-{
-       return iov_iter_get_pages(i, pages, maxsize, maxpages, start, 0);
+       return __iov_iter_get_pages_alloc(i, &pages, maxsize, maxpages, start);
 }
 EXPORT_SYMBOL(iov_iter_get_pages2);
 
-ssize_t iov_iter_get_pages_alloc(struct iov_iter *i,
-                  struct page ***pages, size_t maxsize,
-                  size_t *start, iov_iter_extraction_t extraction_flags)
+ssize_t iov_iter_get_pages_alloc2(struct iov_iter *i,
+               struct page ***pages, size_t maxsize, size_t *start)
 {
        ssize_t len;
 
        *pages = NULL;
 
-       len = __iov_iter_get_pages_alloc(i, pages, maxsize, ~0U, start,
-                                        extraction_flags);
+       len = __iov_iter_get_pages_alloc(i, pages, maxsize, ~0U, start);
        if (len <= 0) {
                kvfree(*pages);
                *pages = NULL;
        }
        return len;
 }
-EXPORT_SYMBOL_GPL(iov_iter_get_pages_alloc);
-
-ssize_t iov_iter_get_pages_alloc2(struct iov_iter *i,
-               struct page ***pages, size_t maxsize, size_t *start)
-{
-       return iov_iter_get_pages_alloc(i, pages, maxsize, start, 0);
-}
 EXPORT_SYMBOL(iov_iter_get_pages_alloc2);
 
 size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum,