netfs: Remove unnecessary references to pages

These places should all use folios instead of pages.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20241005182307.3190401-4-willy@infradead.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: Matthew Wilcox (Oracle)

fs/netfs/buffered_read.c

@@ -646,7 +646,7 @@ static bool netfs_skip_folio_read(struct folio *folio, loff_t pos, size_t len,
 	if (unlikely(always_fill)) {
 		if (pos - offset + len <= i_size)
 			return false; /* Page entirely before EOF */
-		zero_user_segment(&folio->page, 0, plen);
+		folio_zero_segment(folio, 0, plen);
 		folio_mark_uptodate(folio);
 		return true;
 	}
@@ -665,7 +665,7 @@ static bool netfs_skip_folio_read(struct folio *folio, loff_t pos, size_t len,
 
 	return false;
 zero_out:
-	zero_user_segments(&folio->page, 0, offset, offset + len, plen);
+	folio_zero_segments(folio, 0, offset, offset + len, plen);
 	return true;
 }
 
@@ -732,7 +732,7 @@ int netfs_write_begin(struct netfs_inode *ctx,
 	if (folio_test_uptodate(folio))
 		goto have_folio;
 
-	/* If the page is beyond the EOF, we want to clear it - unless it's
+	/* If the folio is beyond the EOF, we want to clear it - unless it's
 	 * within the cache granule containing the EOF, in which case we need
 	 * to preload the granule.
 	 */
@@ -792,7 +792,7 @@ int netfs_write_begin(struct netfs_inode *ctx,
 EXPORT_SYMBOL(netfs_write_begin);
 
 /*
- * Preload the data into a page we're proposing to write into.
+ * Preload the data into a folio we're proposing to write into.
  */
 int netfs_prefetch_for_write(struct file *file, struct folio *folio,
 			     size_t offset, size_t len)

fs/netfs/buffered_write.c

@@ -83,13 +83,13 @@ static void netfs_update_i_size(struct netfs_inode *ctx, struct inode *inode,
  * netfs_perform_write - Copy data into the pagecache.
  * @iocb: The operation parameters
  * @iter: The source buffer
- * @netfs_group: Grouping for dirty pages (eg. ceph snaps).
+ * @netfs_group: Grouping for dirty folios (eg. ceph snaps).
  *
- * Copy data into pagecache pages attached to the inode specified by @iocb.
+ * Copy data into pagecache folios attached to the inode specified by @iocb.
  * The caller must hold appropriate inode locks.
  *
- * Dirty pages are tagged with a netfs_folio struct if they're not up to date
- * to indicate the range modified.  Dirty pages may also be tagged with a
+ * Dirty folios are tagged with a netfs_folio struct if they're not up to date
+ * to indicate the range modified.  Dirty folios may also be tagged with a
  * netfs-specific grouping such that data from an old group gets flushed before
  * a new one is started.
  */
@@ -223,11 +223,11 @@ ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter,
 		 * we try to read it.
 		 */
 		if (fpos >= ctx->zero_point) {
-			zero_user_segment(&folio->page, 0, offset);
+			folio_zero_segment(folio, 0, offset);
 			copied = copy_folio_from_iter_atomic(folio, offset, part, iter);
 			if (unlikely(copied == 0))
 				goto copy_failed;
-			zero_user_segment(&folio->page, offset + copied, flen);
+			folio_zero_segment(folio, offset + copied, flen);
 			__netfs_set_group(folio, netfs_group);
 			folio_mark_uptodate(folio);
 			trace_netfs_folio(folio, netfs_modify_and_clear);
@@ -407,7 +407,7 @@ EXPORT_SYMBOL(netfs_perform_write);
  * netfs_buffered_write_iter_locked - write data to a file
  * @iocb:	IO state structure (file, offset, etc.)
  * @from:	iov_iter with data to write
- * @netfs_group: Grouping for dirty pages (eg. ceph snaps).
+ * @netfs_group: Grouping for dirty folios (eg. ceph snaps).
  *
  * This function does all the work needed for actually writing data to a
  * file. It does all basic checks, removes SUID from the file, updates