From: Filipe Manana fdmanana@suse.com
commit ad3fc7946b1829213bbdbb2b9ad0d124b31ae4a7 upstream.
After commit 92082d40976ed0 ("btrfs: integrate page status update for data read path into begin/end_page_read"), the 'nr' counter at btrfs_do_readpage() is no longer used, we increment it but we never read from it. So just remove it.
Reviewed-by: Johannes Thumshirn johannes.thumshirn@wdc.com Signed-off-by: Filipe Manana fdmanana@suse.com Signed-off-by: David Sterba dsterba@suse.com Cc: Nathan Chancellor nathan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/btrfs/extent_io.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
--- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3562,7 +3562,6 @@ int btrfs_do_readpage(struct page *page, u64 cur_end; struct extent_map *em; int ret = 0; - int nr = 0; size_t pg_offset = 0; size_t iosize; size_t blocksize = inode->i_sb->s_blocksize; @@ -3720,9 +3719,7 @@ int btrfs_do_readpage(struct page *page, end_bio_extent_readpage, 0, this_bio_flag, force_bio_submit); - if (!ret) { - nr++; - } else { + if (ret) { unlock_extent(tree, cur, cur + iosize - 1); end_page_read(page, false, cur, iosize); goto out;