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authorLi Zefan <lizf@cn.fujitsu.com>2012-03-12 16:39:28 +0800
committerDavid Sterba <dsterba@suse.cz>2012-04-18 19:22:16 +0200
commit8e52acf70459020d7e9e9fda25066be4da520943 (patch)
treef6c63a909414958b3a8155fa83b17ea1c3c10525
parent871383be592ba7e819d27556591e315a0df38cee (diff)
downloadlinux-linaro-stable-8e52acf70459020d7e9e9fda25066be4da520943.tar.gz
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>
-rw-r--r--fs/btrfs/extent_io.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 4789770f8eaf..05951bdf72cc 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -404,18 +404,16 @@ static int split_state(struct extent_io_tree *tree, struct extent_state *orig,
/*
* 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 @@ static int clear_state_bit(struct extent_io_tree *tree,
} else {
merge_state(tree, state);
}
- return ret;
}
static struct extent_state *