diff options
Diffstat (limited to 'fs/btrfs/file.c')
| -rw-r--r-- | fs/btrfs/file.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 566e526b60ff..83836fb3d4e9 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -112,7 +112,7 @@ static int dirty_and_release_pages(struct btrfs_trans_handle *trans, if (buffer_mapped(bh) && bh->b_blocknr == 0) { struct btrfs_key key; struct btrfs_path *path; - char *ptr; + char *ptr, *kaddr; u32 datasize; /* create an inline extent, and copy the data in */ @@ -135,8 +135,11 @@ static int dirty_and_release_pages(struct btrfs_trans_handle *trans, btrfs_set_file_extent_type(ei, BTRFS_FILE_EXTENT_INLINE); ptr = btrfs_file_extent_inline_start(ei); + kaddr = kmap_atomic(bh->b_page, KM_USER0); btrfs_memcpy(root, path->nodes[0]->b_data, - ptr, bh->b_data, offset + write_bytes); + ptr, kaddr + bh_offset(bh), + offset + write_bytes); + kunmap_atomic(kaddr, KM_USER0); mark_buffer_dirty(path->nodes[0]); btrfs_free_path(path); } else if (buffer_mapped(bh)) { |