btrfs: drop constant param from btrfs_release_extent_buffer_page

All callers use the same value, simplify the function.

Signed-off-by: David Sterba <dsterba@suse.cz>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 7822900..638e1a5 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4450,19 +4450,16 @@ int extent_buffer_under_io(struct extent_buffer *eb)
 /*
  * Helper for releasing extent buffer page.
  */
-static void btrfs_release_extent_buffer_page(struct extent_buffer *eb,
-                                               unsigned long start_idx)
+static void btrfs_release_extent_buffer_page(struct extent_buffer *eb)
 {
        unsigned long index;
-       unsigned long num_pages;
        struct page *page;
        int mapped = !test_bit(EXTENT_BUFFER_DUMMY, &eb->bflags);
 
        BUG_ON(extent_buffer_under_io(eb));
 
-       num_pages = num_extent_pages(eb->start, eb->len);
-       index = start_idx + num_pages;
-       if (start_idx >= index)
+       index = num_extent_pages(eb->start, eb->len);
+       if (index == 0)
                return;
 
        do {
@@ -4498,7 +4495,7 @@ static void btrfs_release_extent_buffer_page(struct extent_buffer *eb,
                        /* One for when we alloced the page */
                        page_cache_release(page);
                }
-       } while (index != start_idx);
+       } while (index != 0);
 }
 
 /*
@@ -4506,7 +4503,7 @@ static void btrfs_release_extent_buffer_page(struct extent_buffer *eb,
  */
 static inline void btrfs_release_extent_buffer(struct extent_buffer *eb)
 {
-       btrfs_release_extent_buffer_page(eb, 0);
+       btrfs_release_extent_buffer_page(eb);
        __free_extent_buffer(eb);
 }
 
@@ -4863,7 +4860,7 @@ static int release_extent_buffer(struct extent_buffer *eb)
                }
 
                /* Should be safe to release our pages at this point */
-               btrfs_release_extent_buffer_page(eb, 0);
+               btrfs_release_extent_buffer_page(eb);
                call_rcu(&eb->rcu_head, btrfs_release_extent_buffer_rcu);
                return 1;
        }