btrfs: remove the extra_gfp parameter from btrfs_alloc_folio_array()

The function btrfs_alloc_folio_array() is only utilized in
btrfs_submit_compressed_read() and no other location, and the only
caller is not utilizing the @extra_gfp parameter.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/compression.c

@@ -609,7 +609,7 @@ void btrfs_submit_compressed_read(struct btrfs_bio *bbio)
 		goto out_free_bio;
 	}
 
-	ret2 = btrfs_alloc_folio_array(cb->nr_folios, cb->compressed_folios, 0);
+	ret2 = btrfs_alloc_folio_array(cb->nr_folios, cb->compressed_folios);
 	if (ret2) {
 		ret = BLK_STS_RESOURCE;
 		goto out_free_compressed_pages;

fs/btrfs/extent_io.c

@@ -667,24 +667,22 @@ static void end_bbio_data_read(struct btrfs_bio *bbio)
 }
 
 /*
- * Populate every free slot in a provided array with folios.
+ * Populate every free slot in a provided array with folios using GFP_NOFS.
  *
  * @nr_folios:   number of folios to allocate
  * @folio_array: the array to fill with folios; any existing non-NULL entries in
  *		 the array will be skipped
- * @extra_gfp:	 the extra GFP flags for the allocation
  *
  * Return: 0        if all folios were able to be allocated;
  *         -ENOMEM  otherwise, the partially allocated folios would be freed and
  *                  the array slots zeroed
  */
-int btrfs_alloc_folio_array(unsigned int nr_folios, struct folio **folio_array,
-			    gfp_t extra_gfp)
+int btrfs_alloc_folio_array(unsigned int nr_folios, struct folio **folio_array)
 {
 	for (int i = 0; i < nr_folios; i++) {
 		if (folio_array[i])
 			continue;
-		folio_array[i] = folio_alloc(GFP_NOFS | extra_gfp, 0);
+		folio_array[i] = folio_alloc(GFP_NOFS, 0);
 		if (!folio_array[i])
 			goto error;
 	}

fs/btrfs/extent_io.h

@@ -365,8 +365,7 @@ void btrfs_clear_buffer_dirty(struct btrfs_trans_handle *trans,
 
 int btrfs_alloc_page_array(unsigned int nr_pages, struct page **page_array,
 			   gfp_t extra_gfp);
-int btrfs_alloc_folio_array(unsigned int nr_folios, struct folio **folio_array,
-			    gfp_t extra_gfp);
+int btrfs_alloc_folio_array(unsigned int nr_folios, struct folio **folio_array);
 
 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
 bool find_lock_delalloc_range(struct inode *inode,