btrfs: remove unused parameter nr_pages in add_ra_bio_pages()

Variable @nr_pages only gets increased but never used.  Remove it.

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

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 2a86a2a..b509277 100644 (file)
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -551,7 +551,6 @@ static noinline int add_ra_bio_pages(struct inode *inode,
        u64 isize = i_size_read(inode);
        int ret;
        struct page *page;
-       unsigned long nr_pages = 0;
        struct extent_map *em;
        struct address_space *mapping = inode->i_mapping;
        struct extent_map_tree *em_tree;
@@ -647,7 +646,6 @@ static noinline int add_ra_bio_pages(struct inode *inode,
                                   PAGE_SIZE, 0);
 
                if (ret == PAGE_SIZE) {
-                       nr_pages++;
                        put_page(page);
                } else {
                        unlock_extent(tree, last_offset, end);