diff options
Diffstat (limited to 'fs/btrfs/relocation.c')
| -rw-r--r-- | fs/btrfs/relocation.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 21ba5f0bcc44..5c9ef6717f84 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1127,16 +1127,22 @@ int replace_file_extents(struct btrfs_trans_handle *trans, fs_info->sectorsize)); WARN_ON(!IS_ALIGNED(end, fs_info->sectorsize)); end--; + /* Take mmap lock to serialize with reflinks. */ + if (!down_read_trylock(&BTRFS_I(inode)->i_mmap_lock)) + continue; ret = try_lock_extent(&BTRFS_I(inode)->io_tree, key.offset, end, &cached_state); - if (!ret) + if (!ret) { + up_read(&BTRFS_I(inode)->i_mmap_lock); continue; + } btrfs_drop_extent_map_range(BTRFS_I(inode), key.offset, end, true); unlock_extent(&BTRFS_I(inode)->io_tree, key.offset, end, &cached_state); + up_read(&BTRFS_I(inode)->i_mmap_lock); } } |