Btrfs: remove search_start and search_end from find_free_extent and callers

We have been passing nothing but (u64)-1 to find_free_extent for search_end in
all of the callers, so it's completely useless, and we've always been passing 0
in as search_start, so just remove them as function arguments and move
search_start into find_free_extent.  Thanks,

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

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 80b6486..edccc94 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2466,8 +2466,7 @@ int btrfs_reserve_extent(struct btrfs_trans_handle *trans,
                                  struct btrfs_root *root,
                                  u64 num_bytes, u64 min_alloc_size,
                                  u64 empty_size, u64 hint_byte,
-                                 u64 search_end, struct btrfs_key *ins,
-                                 u64 data);
+                                 struct btrfs_key *ins, u64 data);
 int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
                  struct extent_buffer *buf, int full_backref, int for_cow);
 int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index eccef6c..9b7e768 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5277,7 +5277,6 @@ enum btrfs_loop_type {
 static noinline int find_free_extent(struct btrfs_trans_handle *trans,
                                     struct btrfs_root *orig_root,
                                     u64 num_bytes, u64 empty_size,
-                                    u64 search_start, u64 search_end,
                                     u64 hint_byte, struct btrfs_key *ins,
                                     u64 data)
 {
@@ -5286,6 +5285,7 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
        struct btrfs_free_cluster *last_ptr = NULL;
        struct btrfs_block_group_cache *block_group = NULL;
        struct btrfs_block_group_cache *used_block_group;
+       u64 search_start = 0;
        int empty_cluster = 2 * 1024 * 1024;
        int allowed_chunk_alloc = 0;
        int done_chunk_alloc = 0;
@@ -5569,11 +5569,6 @@ unclustered_alloc:
                }
 checks:
                search_start = stripe_align(root, offset);
-               /* move on to the next group */
-               if (search_start + num_bytes >= search_end) {
-                       btrfs_add_free_space(used_block_group, offset, num_bytes);
-                       goto loop;
-               }
 
                /* move on to the next group */
                if (search_start + num_bytes >
@@ -5721,12 +5716,10 @@ int btrfs_reserve_extent(struct btrfs_trans_handle *trans,
                         struct btrfs_root *root,
                         u64 num_bytes, u64 min_alloc_size,
                         u64 empty_size, u64 hint_byte,
-                        u64 search_end, struct btrfs_key *ins,
-                        u64 data)
+                        struct btrfs_key *ins, u64 data)
 {
        bool final_tried = false;
        int ret;
-       u64 search_start = 0;
 
        data = btrfs_get_alloc_profile(root, data);
 again:
@@ -5741,8 +5734,7 @@ again:
 
        WARN_ON(num_bytes < root->sectorsize);
        ret = find_free_extent(trans, root, num_bytes, empty_size,
-                              search_start, search_end, hint_byte,
-                              ins, data);
+                              hint_byte, ins, data);
 
        if (ret == -ENOSPC) {
                if (!final_tried) {
@@ -6137,7 +6129,7 @@ struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
                return ERR_CAST(block_rsv);
 
        ret = btrfs_reserve_extent(trans, root, blocksize, blocksize,
-                                  empty_size, hint, (u64)-1, &ins, 0);
+                                  empty_size, hint, &ins, 0);
        if (ret) {
                unuse_block_rsv(root->fs_info, block_rsv, blocksize);
                return ERR_PTR(ret);

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 892b347..bb26819 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -634,8 +634,7 @@ retry:
                ret = btrfs_reserve_extent(trans, root,
                                           async_extent->compressed_size,
                                           async_extent->compressed_size,
-                                          0, alloc_hint,
-                                          (u64)-1, &ins, 1);
+                                          0, alloc_hint, &ins, 1);
                btrfs_end_transaction(trans, root);
 
                if (ret) {
@@ -838,7 +837,7 @@ static noinline int cow_file_range(struct inode *inode,
                cur_alloc_size = disk_num_bytes;
                ret = btrfs_reserve_extent(trans, root, cur_alloc_size,
                                           root->sectorsize, 0, alloc_hint,
-                                          (u64)-1, &ins, 1);
+                                          &ins, 1);
                BUG_ON(ret);
 
                em = alloc_extent_map();
@@ -5414,7 +5413,7 @@ static struct extent_map *btrfs_new_extent_direct(struct inode *inode,
 
        alloc_hint = get_extent_allocation_hint(inode, start, len);
        ret = btrfs_reserve_extent(trans, root, len, root->sectorsize, 0,
-                                  alloc_hint, (u64)-1, &ins, 1);
+                                  alloc_hint, &ins, 1);
        if (ret) {
                em = ERR_PTR(ret);
                goto out;
@@ -7315,7 +7314,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
                }
 
                ret = btrfs_reserve_extent(trans, root, num_bytes, min_size,
-                                          0, *alloc_hint, (u64)-1, &ins, 1);
+                                          0, *alloc_hint, &ins, 1);
                if (ret) {
                        if (own_trans)
                                btrfs_end_transaction(trans, root);