btrfs: remove always true condition in btrfs_start_delalloc_roots

Following the rework in e076ab2a2ca7 ("btrfs: shrink delalloc pages
instead of full inodes") the nr variable is no longer passed by
reference to start_delalloc_inodes hence it cannot change. Additionally
we are always guaranteed for it to be positive number hence it's
redundant to have it as a condition in the loop. Simply remove that
usage.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 17418a7..4056fc3 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9510,7 +9510,7 @@ int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, long nr,
        mutex_lock(&fs_info->delalloc_root_mutex);
        spin_lock(&fs_info->delalloc_root_lock);
        list_splice_init(&fs_info->delalloc_roots, &splice);
-       while (!list_empty(&splice) && nr) {
+       while (!list_empty(&splice)) {
                /*
                 * Reset nr_to_write here so we know that we're doing a full
                 * flush.