btrfs: remove unused btrfs_cond_migrate_bytes

The last user of this was removed in 7f9fe6144076 ("btrfs: improve
global reserve stealing logic"), drop this code as it's no longer called
by anybody.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/block-rsv.c b/fs/btrfs/block-rsv.c
index 069ea9d..2970525 100644 (file)
--- a/fs/btrfs/block-rsv.c
+++ b/fs/btrfs/block-rsv.c
@@ -325,31 +325,6 @@ void btrfs_block_rsv_add_bytes(struct btrfs_block_rsv *block_rsv,
        spin_unlock(&block_rsv->lock);
 }
 
-int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
-                            struct btrfs_block_rsv *dest, u64 num_bytes,
-                            int min_factor)
-{
-       struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
-       u64 min_bytes;
-
-       if (global_rsv->space_info != dest->space_info)
-               return -ENOSPC;
-
-       spin_lock(&global_rsv->lock);
-       min_bytes = div_factor(global_rsv->size, min_factor);
-       if (global_rsv->reserved < min_bytes + num_bytes) {
-               spin_unlock(&global_rsv->lock);
-               return -ENOSPC;
-       }
-       global_rsv->reserved -= num_bytes;
-       if (global_rsv->reserved < global_rsv->size)
-               global_rsv->full = false;
-       spin_unlock(&global_rsv->lock);
-
-       btrfs_block_rsv_add_bytes(dest, num_bytes, true);
-       return 0;
-}
-
 void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
 {
        struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;

diff --git a/fs/btrfs/block-rsv.h b/fs/btrfs/block-rsv.h
index 578c349..7e9016a 100644 (file)
--- a/fs/btrfs/block-rsv.h
+++ b/fs/btrfs/block-rsv.h
@@ -70,9 +70,6 @@ int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
                            struct btrfs_block_rsv *dst_rsv, u64 num_bytes,
                            bool update_size);
 int btrfs_block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes);
-int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
-                            struct btrfs_block_rsv *dest, u64 num_bytes,
-                            int min_factor);
 void btrfs_block_rsv_add_bytes(struct btrfs_block_rsv *block_rsv,
                               u64 num_bytes, bool update_size);
 u64 btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,