Btrfs: noinline the cluster searching functions

When profiling the find cluster code it's hard to tell where we are spending our
time because the bitmap and non-bitmap functions get inlined by the compiler, so
make that not happen.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 930c07f..f56caac 100644 (file)
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2142,10 +2142,11 @@ again:
 /*
  * This searches the block group for just extents to fill the cluster with.
  */
-static int setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
-                                  struct btrfs_free_cluster *cluster,
-                                  struct list_head *bitmaps,
-                                  u64 offset, u64 bytes, u64 min_bytes)
+static noinline int
+setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
+                       struct btrfs_free_cluster *cluster,
+                       struct list_head *bitmaps, u64 offset, u64 bytes,
+                       u64 min_bytes)
 {
        struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
        struct btrfs_free_space *first = NULL;
@@ -2245,10 +2246,11 @@ static int setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
  * This specifically looks for bitmaps that may work in the cluster, we assume
  * that we have already failed to find extents that will work.
  */
-static int setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
-                               struct btrfs_free_cluster *cluster,
-                               struct list_head *bitmaps,
-                               u64 offset, u64 bytes, u64 min_bytes)
+static noinline int
+setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
+                    struct btrfs_free_cluster *cluster,
+                    struct list_head *bitmaps, u64 offset, u64 bytes,
+                    u64 min_bytes)
 {
        struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
        struct btrfs_free_space *entry;