Btrfs: retrurn void from clear_state_bit
Currently it returns a set of bits that were cleared, but this return
value is not used at all.
Moreover it doesn't seem to be useful, because we may clear the bits
of a few extent_states, but only the cleared bits of last one is
returned.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 4789770..05951bd 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -404,18 +404,16 @@
/*
* utility function to clear some bits in an extent state struct.
- * it will optionally wake up any one waiting on this state (wake == 1), or
- * forcibly remove the state from the tree (delete == 1).
+ * it will optionally wake up any one waiting on this state (wake == 1)
*
* If no bits are set on the state struct after clearing things, the
* struct is freed and removed from the tree
*/
-static int clear_state_bit(struct extent_io_tree *tree,
+static void clear_state_bit(struct extent_io_tree *tree,
struct extent_state *state,
int *bits, int wake)
{
int bits_to_clear = *bits & ~EXTENT_CTLBITS;
- int ret = state->state & bits_to_clear;
if ((bits_to_clear & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) {
u64 range = state->end - state->start + 1;
@@ -437,7 +435,6 @@
} else {
merge_state(tree, state);
}
- return ret;
}
static struct extent_state *