6 files changed, 52 insertions, 22 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 84d4c052fcd9..fceddbdfdd3d 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2990,15 +2990,6 @@ BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
 BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
                    other_encoding, 16);
 
-/* this returns the number of file bytes represented by the inline item.
- * If an item is compressed, this is the uncompressed size
- */
-static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
-                                               struct btrfs_file_extent_item *e)
-{
-        return btrfs_file_extent_ram_bytes(eb, e);
-}
-
 /*
  * this returns the number of bytes used by the item on disk, minus the
  * size of any extent headers.  If a file is compressed on disk, this is
@@ -3012,6 +3003,32 @@ static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb,
         return btrfs_item_size(eb, e) - offset;
 }
 
+/* this returns the number of file bytes represented by the inline item.
+ * If an item is compressed, this is the uncompressed size
+ */
+static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb,
+                                               int slot,
+                                               struct btrfs_file_extent_item *fi)
+{
+        struct btrfs_map_token token;
+
+        btrfs_init_map_token(&token);
+        /*
+         * return the space used on disk if this item isn't
+         * compressed or encoded
+         */
+        if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 &&
+            btrfs_token_file_extent_encryption(eb, fi, &token) == 0 &&
+            btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) {
+                return btrfs_file_extent_inline_item_len(eb,
+                                                         btrfs_item_nr(slot));
+        }
+
+        /* otherwise use the ram bytes field */
+        return btrfs_token_file_extent_ram_bytes(eb, fi, &token);
+}
+
+
 /* btrfs_dev_stats_item */
 static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb,
                                         struct btrfs_dev_stats_item *ptr,
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 3dfd8db0e243..0165b8672f09 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -772,7 +772,8 @@ next_slot:
                                 btrfs_file_extent_num_bytes(leaf, fi);
                 } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
                         extent_end = key.offset +
-                                btrfs_file_extent_inline_len(leaf, fi);
+                                btrfs_file_extent_inline_len(leaf,
+                                                     path->slots[0], fi);
                 } else {
                         WARN_ON(1);
                         extent_end = search_start;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3b6598783be9..ad961a598c99 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1281,7 +1281,8 @@ next_slot:
                         nocow = 1;
                 } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
                         extent_end = found_key.offset +
-                                btrfs_file_extent_inline_len(leaf, fi);
+                                btrfs_file_extent_inline_len(leaf,
+                                                     path->slots[0], fi);
                         extent_end = ALIGN(extent_end, root->sectorsize);
                 } else {
                         BUG_ON(1);
@@ -4023,7 +4024,7 @@ search_again:
                                     btrfs_file_extent_num_bytes(leaf, fi);
                         } else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
                                 item_end += btrfs_file_extent_inline_len(leaf,
-                                                                         fi);
+                                                         path->slots[0], fi);
                         }
                         item_end--;
                 }
@@ -4093,6 +4094,12 @@ search_again:
                                         inode_sub_bytes(inode, item_end + 1 -
                                                         new_size);
                                 }
+
+                                /*
+                                 * update the ram bytes to properly reflect
+                                 * the new size of our item
+                                 */
+                                btrfs_set_file_extent_ram_bytes(leaf, fi, size);
                                 size =
                                     btrfs_file_extent_calc_inline_size(size);
                                 btrfs_truncate_item(root, path, size, 1);
@@ -6162,7 +6169,7 @@ again:
                        btrfs_file_extent_num_bytes(leaf, item);
         } else if (found_type == BTRFS_FILE_EXTENT_INLINE) {
                 size_t size;
-                size = btrfs_file_extent_inline_len(leaf, item);
+                size = btrfs_file_extent_inline_len(leaf, path->slots[0], item);
                 extent_end = ALIGN(extent_start + size, root->sectorsize);
         }
 next:
@@ -6231,7 +6238,7 @@ next:
                         goto out;
                 }
 
-                size = btrfs_file_extent_inline_len(leaf, item);
+                size = btrfs_file_extent_inline_len(leaf, path->slots[0], item);
                 extent_offset = page_offset(page) + pg_offset - extent_start;
                 copy_size = min_t(u64, PAGE_CACHE_SIZE - pg_offset,
                                 size - extent_offset);
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 4eed002b7cf6..6efd70d3b64f 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -249,7 +249,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
                             BTRFS_FILE_EXTENT_INLINE) {
                                 printk(KERN_INFO "\t\tinline extent data "
                                        "size %u\n",
-                                       btrfs_file_extent_inline_len(l, fi));
+                                       btrfs_file_extent_inline_len(l, i, fi));
                                 break;
                         }
                         printk(KERN_INFO "\t\textent data disk bytenr %llu "
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 85259cba784a..730dce395858 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -1377,7 +1377,7 @@ static int read_symlink(struct btrfs_root *root,
         BUG_ON(compression);
 
         off = btrfs_file_extent_inline_start(ei);
-        len = btrfs_file_extent_inline_len(path->nodes[0], ei);
+        len = btrfs_file_extent_inline_len(path->nodes[0], path->slots[0], ei);
 
         ret = fs_path_add_from_extent_buffer(dest, path->nodes[0], off, len);
 
@@ -4207,7 +4207,8 @@ static int send_write_or_clone(struct send_ctx *sctx,
                         struct btrfs_file_extent_item);
         type = btrfs_file_extent_type(path->nodes[0], ei);
         if (type == BTRFS_FILE_EXTENT_INLINE) {
-                len = btrfs_file_extent_inline_len(path->nodes[0], ei);
+                len = btrfs_file_extent_inline_len(path->nodes[0],
+                                                   path->slots[0], ei);
                 /*
                  * it is possible the inline item won't cover the whole page,
                  * but there may be items after this page.  Make
@@ -4448,7 +4449,8 @@ static int get_last_extent(struct send_ctx *sctx, u64 offset)
                             struct btrfs_file_extent_item);
         type = btrfs_file_extent_type(path->nodes[0], fi);
         if (type == BTRFS_FILE_EXTENT_INLINE) {
-                u64 size = btrfs_file_extent_inline_len(path->nodes[0], fi);
+                u64 size = btrfs_file_extent_inline_len(path->nodes[0],
+                                                        path->slots[0], fi);
                 extent_end = ALIGN(key.offset + size,
                                    sctx->send_root->sectorsize);
         } else {
@@ -4482,7 +4484,8 @@ static int maybe_send_hole(struct send_ctx *sctx, struct btrfs_path *path,
                             struct btrfs_file_extent_item);
         type = btrfs_file_extent_type(path->nodes[0], fi);
         if (type == BTRFS_FILE_EXTENT_INLINE) {
-                u64 size = btrfs_file_extent_inline_len(path->nodes[0], fi);
+                u64 size = btrfs_file_extent_inline_len(path->nodes[0],
+                                                        path->slots[0], fi);
                 extent_end = ALIGN(key->offset + size,
                                    sctx->send_root->sectorsize);
         } else {
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index b142b6dc96c3..39d83da03e03 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -570,7 +570,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
                 if (btrfs_file_extent_disk_bytenr(eb, item) == 0)
                         nbytes = 0;
         } else if (found_type == BTRFS_FILE_EXTENT_INLINE) {
-                size = btrfs_file_extent_inline_len(eb, item);
+                size = btrfs_file_extent_inline_len(eb, slot, item);
                 nbytes = btrfs_file_extent_ram_bytes(eb, item);
                 extent_end = ALIGN(start + size, root->sectorsize);
         } else {
@@ -3367,7 +3367,9 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
                                         struct btrfs_file_extent_item);
                 if (btrfs_file_extent_type(src, extent) ==
                     BTRFS_FILE_EXTENT_INLINE) {
-                        len = btrfs_file_extent_inline_len(src, extent);
+                        len = btrfs_file_extent_inline_len(src,
+                                                           src_path->slots[0],
+                                                           extent);
                         *last_extent = ALIGN(key.offset + len,
                                              log->sectorsize);
                 } else {
@@ -3431,7 +3433,7 @@ fill_holes:
                 extent = btrfs_item_ptr(src, i, struct btrfs_file_extent_item);
                 if (btrfs_file_extent_type(src, extent) ==
                     BTRFS_FILE_EXTENT_INLINE) {
-                        len = btrfs_file_extent_inline_len(src, extent);
+                        len = btrfs_file_extent_inline_len(src, i, extent);
                         extent_end = ALIGN(key.offset + len, log->sectorsize);
                 } else {
                         len = btrfs_file_extent_num_bytes(src, extent);