3 files changed, 5 insertions, 4 deletions

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index b8cbc8d5c7f7..85ae2b6fe03b 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -266,9 +266,9 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
         em->mod_start = em->start;
         em->mod_len = em->len;
 
-        if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags)) {
+        if (test_bit(EXTENT_FLAG_FILLING, &em->flags)) {
                 prealloc = true;
-                clear_bit(EXTENT_FLAG_PREALLOC, &em->flags);
+                clear_bit(EXTENT_FLAG_FILLING, &em->flags);
         }
 
         try_merge_map(tree, em);
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h
index 99a0dcb5ba2f..922943ce29e8 100644
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -14,6 +14,7 @@
 #define EXTENT_FLAG_VACANCY 2 /* no file extent item found */
 #define EXTENT_FLAG_PREALLOC 3 /* pre-allocated extent */
 #define EXTENT_FLAG_LOGGING 4 /* Logging this extent */
+#define EXTENT_FLAG_FILLING 5 /* Filling in a preallocated extent */
 
 struct extent_map {
         struct rb_node rb_node;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index bfd59bcc50d7..73e6833dcc21 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1327,7 +1327,7 @@ out_check:
                         em->orig_block_len = disk_num_bytes;
                         em->bdev = root->fs_info->fs_devices->latest_bdev;
                         set_bit(EXTENT_FLAG_PINNED, &em->flags);
-                        set_bit(EXTENT_FLAG_PREALLOC, &em->flags);
+                        set_bit(EXTENT_FLAG_FILLING, &em->flags);
                         while (1) {
                                 write_lock(&em_tree->lock);
                                 ret = add_extent_mapping(em_tree, em);
@@ -5945,7 +5945,7 @@ static struct extent_map *create_pinned_em(struct inode *inode, u64 start,
         em->orig_block_len = orig_block_len;
         set_bit(EXTENT_FLAG_PINNED, &em->flags);
         if (type == BTRFS_ORDERED_PREALLOC)
-                set_bit(EXTENT_FLAG_PREALLOC, &em->flags);
+                set_bit(EXTENT_FLAG_FILLING, &em->flags);
 
         do {
                 btrfs_drop_extent_cache(inode, em->start,