On 2018/8/23 上午3:14, Liu Bo wrote:
> As next_state() is already defined to get the next state, update us to use
> the helper.
>
> No functional changes.
>
> Signed-off-by: Liu Bo <bo.liu@xxxxxxxxxxxxxxxxx>
Reviewed-by: Qu Wenruo <wqu@xxxxxxxx>
Thanks,
Qu
> ---
> fs/btrfs/extent_io.c | 7 +------
> 1 file changed, 1 insertion(+), 6 deletions(-)
>
> diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
> index 628f1aef34b0..44397fa909c2 100644
> --- a/fs/btrfs/extent_io.c
> +++ b/fs/btrfs/extent_io.c
> @@ -1424,20 +1424,15 @@ int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
> struct extent_state **cached_state)
> {
> struct extent_state *state;
> - struct rb_node *n;
> int ret = 1;
>
> spin_lock(&tree->lock);
> if (cached_state && *cached_state) {
> state = *cached_state;
> if (state->end == start - 1 && extent_state_in_tree(state)) {
> - n = rb_next(&state->rb_node);
> - while (n) {
> - state = rb_entry(n, struct extent_state,
> - rb_node);
> + while ((state = next_state(state)) != NULL) {
> if (state->state & bits)
> goto got_it;
> - n = rb_next(n);
> }
> free_extent_state(*cached_state);
> *cached_state = NULL;
>
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