}
 
-static int submit_extent_page(int op, int op_flags, struct extent_io_tree *tree,
+static int submit_extent_page(unsigned int op, unsigned int op_flags,
+                             struct extent_io_tree *tree,
                              struct writeback_control *wbc,
                              struct page *page, sector_t sector,
                              size_t size, unsigned long offset,
                         get_extent_t *get_extent,
                         struct extent_map **em_cached,
                         struct bio **bio, int mirror_num,
-                        unsigned long *bio_flags, int read_flags,
+                        unsigned long *bio_flags, unsigned int read_flags,
                         u64 *prev_em_start)
 {
        struct inode *inode = page->mapping->host;
                                   struct page *page,
                                   get_extent_t *get_extent,
                                   struct bio **bio, int mirror_num,
-                                  unsigned long *bio_flags, int read_flags)
+                                  unsigned long *bio_flags,
+                                  unsigned int read_flags)
 {
        struct inode *inode = page->mapping->host;
        struct btrfs_ordered_extent *ordered;
                                 struct extent_page_data *epd,
                                 loff_t i_size,
                                 unsigned long nr_written,
-                                int write_flags, int *nr_ret)
+                                unsigned int write_flags, int *nr_ret)
 {
        struct extent_io_tree *tree = epd->tree;
        u64 start = page_offset(page);
        size_t pg_offset = 0;
        loff_t i_size = i_size_read(inode);
        unsigned long end_index = i_size >> PAGE_SHIFT;
-       int write_flags = 0;
+       unsigned int write_flags = 0;
        unsigned long nr_written = 0;
 
        if (wbc->sync_mode == WB_SYNC_ALL)
        unsigned long i, num_pages;
        unsigned long bio_flags = 0;
        unsigned long start, end;
-       int write_flags = (epd->sync_io ? REQ_SYNC : 0) | REQ_META;
+       unsigned int write_flags = (epd->sync_io ? REQ_SYNC : 0) | REQ_META;
        int ret = 0;
 
        clear_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags);