Subject: Rework btrfs_file_write to only allocate while page locks are held

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 1fa705683008..e66acd4e2745 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -31,6 +31,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
         struct btrfs_dir_item *di;
         struct btrfs_inode_item *ii;
         struct btrfs_block_group_item *bi;
+        struct btrfs_file_extent_item *fi;
         u32 type;
 
         printk("leaf %llu total ptrs %d free space %d\n",
@@ -75,6 +76,23 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
                         printk("\t\textent data refs %u\n",
                                 btrfs_extent_refs(ei));
                         break;
+
+                case BTRFS_EXTENT_DATA_KEY:
+                        fi = btrfs_item_ptr(l, i,
+                                            struct btrfs_file_extent_item);
+                        if (btrfs_file_extent_type(fi) ==
+                            BTRFS_FILE_EXTENT_INLINE) {
+                                printk("\t\tinline extent data size %u\n",
+                                   btrfs_file_extent_inline_len(l->items + i));
+                                break;
+                        }
+                        printk("\t\textent data disk block %llu nr %llu\n",
+                               (unsigned long long)btrfs_file_extent_disk_blocknr(fi),
+                               (unsigned long long)btrfs_file_extent_disk_num_blocks(fi));
+                        printk("\t\textent data offset %llu nr %llu\n",
+                          (unsigned long long)btrfs_file_extent_offset(fi),
+                          (unsigned long long)btrfs_file_extent_num_blocks(fi));
+                        break;
                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
                         bi = btrfs_item_ptr(l, i,
                                             struct btrfs_block_group_item);