btrfs: rename BTRFS_ROOT_REF_COWS to BTRFS_ROOT_SHAREABLE

[linux-block.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3ea694ee1c901f9136cd1c3e75ea4defbdcf57bb..08c02bd148a6961e440a98a649924d8773b0aa50 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4100,11 +4100,12 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
        BUG_ON(new_size > 0 && min_type != BTRFS_EXTENT_DATA_KEY);
 
        /*
-        * for non-free space inodes and ref cows, we want to back off from
-        * time to time
+        * For non-free space inodes and non-shareable roots, we want to back
+        * off from time to time.  This means all inodes in subvolume roots,
+        * reloc roots, and data reloc roots.
         */
        if (!btrfs_is_free_space_inode(BTRFS_I(inode)) &&
-           test_bit(BTRFS_ROOT_REF_COWS, &root->state))
+           test_bit(BTRFS_ROOT_SHAREABLE, &root->state))
                be_nice = true;
 
        path = btrfs_alloc_path();
@@ -4121,7 +4122,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
         * not block aligned since we will be keeping the last block of the
         * extent just the way it is.
         */
-       if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||
+       if (test_bit(BTRFS_ROOT_SHAREABLE, &root->state) ||
            root == fs_info->tree_root)
                btrfs_drop_extent_cache(BTRFS_I(inode), ALIGN(new_size,
                                        fs_info->sectorsize),
@@ -4233,7 +4234,7 @@ search_again:
                                                         extent_num_bytes);
                                num_dec = (orig_num_bytes -
                                           extent_num_bytes);
-                               if (test_bit(BTRFS_ROOT_REF_COWS,
+                               if (test_bit(BTRFS_ROOT_SHAREABLE,
                                             &root->state) &&
                                    extent_start != 0)
                                        inode_sub_bytes(inode, num_dec);
@@ -4249,7 +4250,7 @@ search_again:
                                num_dec = btrfs_file_extent_num_bytes(leaf, fi);
                                if (extent_start != 0) {
                                        found_extent = 1;
-                                       if (test_bit(BTRFS_ROOT_REF_COWS,
+                                       if (test_bit(BTRFS_ROOT_SHAREABLE,
                                                     &root->state))
                                                inode_sub_bytes(inode, num_dec);
                                }
@@ -4285,7 +4286,7 @@ search_again:
                                clear_len = fs_info->sectorsize;
                        }
 
-                       if (test_bit(BTRFS_ROOT_REF_COWS, &root->state))
+                       if (test_bit(BTRFS_ROOT_SHAREABLE, &root->state))
                                inode_sub_bytes(inode, item_end + 1 - new_size);
                }
 delete:
@@ -4326,7 +4327,7 @@ delete:
                should_throttle = false;
 
                if (found_extent &&
-                   (test_bit(BTRFS_ROOT_REF_COWS, &root->state) ||
+                   (test_bit(BTRFS_ROOT_SHAREABLE, &root->state) ||
                     root == fs_info->tree_root)) {
                        struct btrfs_ref ref = { 0 };