btrfs: get fs_info from eb in lock_extent_buffer_for_io

We can read fs_info from extent buffer and can drop it from the
parameters.

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

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 66b4637..853a5fc 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3497,11 +3497,10 @@ void wait_on_extent_buffer_writeback(struct extent_buffer *eb)
  * Return >0 is same as 0, except bio is not submitted
  * Return <0 if something went wrong, no page is locked
  */
-static noinline_for_stack int
-lock_extent_buffer_for_io(struct extent_buffer *eb,
-                         struct btrfs_fs_info *fs_info,
+static noinline_for_stack int lock_extent_buffer_for_io(struct extent_buffer *eb,
                          struct extent_page_data *epd)
 {
+       struct btrfs_fs_info *fs_info = eb->fs_info;
        int i, num_pages, failed_page_nr;
        int flush = 0;
        int ret = 0;
@@ -3829,7 +3828,7 @@ retry:
                                continue;
 
                        prev_eb = eb;
-                       ret = lock_extent_buffer_for_io(eb, fs_info, &epd);
+                       ret = lock_extent_buffer_for_io(eb, &epd);
                        if (!ret) {
                                free_extent_buffer(eb);
                                continue;