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Commit 3de85bb9 authored by Josef Bacik's avatar Josef Bacik
Browse files

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: default avatarJosef Bacik <josef@redhat.com>
parent 86d4a77b

fs/btrfs/free-space-cache.c

+10 −8
Original line number Diff line number Diff line
@@ -2142,10 +2142,11 @@ static int btrfs_bitmap_cluster(struct btrfs_block_group_cache *block_group, 
/*

 * 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,

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 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,

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 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;