[PATCH] btrfs/ulist: replace the magic number 128 with macro definition ULIST_SIZE_INCREMENT

Wang Sheng-Hui
2012-03-08T04:38:38Z

Remove the magic number 128 in btrfs/ulist.c.
Introduce the macro definition ULIST_SIZE_INCREMENT in btrfs/ulist.h.

Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
---
fs/btrfs/ulist.c | 2 +-
fs/btrfs/ulist.h | 5 +++++
2 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/fs/btrfs/ulist.c b/fs/btrfs/ulist.c
index 12f5147..b8a4506 100644
--- a/fs/btrfs/ulist.c
+++ b/fs/btrfs/ulist.c
@@ -154,7 +154,7 @@ int ulist_add(struct ulist *ulist, u64 val, unsigned long aux,
}

if (ulist->nnodes >= ulist->nodes_alloced) {
- u64 new_alloced = ulist->nodes_alloced + 128;
+ u64 new_alloced = ulist->nodes_alloced + ULIST_SIZE_INCREMENT;
struct ulist_node *new_nodes;
void *old = NULL;

diff --git a/fs/btrfs/ulist.h b/fs/btrfs/ulist.h
index 2e25dec..590e396 100644
--- a/fs/btrfs/ulist.h
+++ b/fs/btrfs/ulist.h
@@ -23,6 +23,11 @@
* number of elements statically allocated inside struct ulist
*/
#define ULIST_SIZE 16
+/*
+ * increment as dynamically allocated elements space grows
+ */
+#define ULIST_SIZE_INCREMENT 128
+

/*
* element of the list
--
1.7.1