diff options
| -rw-r--r-- | fs/btrfs/ctree.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 8 |
2 files changed, 6 insertions, 4 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index c0c95cccbb5b..f6f7a6af0357 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -2887,8 +2887,8 @@ int btrfs_split_item(struct btrfs_trans_handle *trans, path->keep_locks = 0; BUG_ON(ret); - BUG_ON(btrfs_leaf_free_space(root, leaf) < sizeof(struct btrfs_item)); leaf = path->nodes[0]; + BUG_ON(btrfs_leaf_free_space(root, leaf) < sizeof(struct btrfs_item)); split: item = btrfs_item_nr(leaf, path->slots[0]); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index e64a4fe19a60..5313a13a998d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -332,6 +332,7 @@ static noinline int compress_file_range(struct inode *inode, u64 disk_num_bytes; u64 blocksize = root->sectorsize; u64 actual_end; + u64 isize = i_size_read(inode); int ret = 0; struct page **pages = NULL; unsigned long nr_pages; @@ -345,12 +346,12 @@ static noinline int compress_file_range(struct inode *inode, orig_start = start; + actual_end = min_t(u64, isize, end + 1); again: will_compress = 0; nr_pages = (end >> PAGE_CACHE_SHIFT) - (start >> PAGE_CACHE_SHIFT) + 1; nr_pages = min(nr_pages, (128 * 1024UL) / PAGE_CACHE_SIZE); - actual_end = min_t(u64, i_size_read(inode), end + 1); total_compressed = actual_end - start; /* we want to make sure that amount of ram required to uncompress @@ -488,7 +489,7 @@ again: add_async_extent(async_cow, start, num_bytes, total_compressed, pages, nr_pages_ret); - if (start + num_bytes < end) { + if (start + num_bytes < end && start + num_bytes < actual_end) { start += num_bytes; pages = NULL; cond_resched(); @@ -696,6 +697,7 @@ static noinline int cow_file_range(struct inode *inode, u64 cur_alloc_size; u64 blocksize = root->sectorsize; u64 actual_end; + u64 isize = i_size_read(inode); struct btrfs_key ins; struct extent_map *em; struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; @@ -705,7 +707,7 @@ static noinline int cow_file_range(struct inode *inode, BUG_ON(!trans); btrfs_set_trans_block_group(trans, inode); - actual_end = min_t(u64, i_size_read(inode), end + 1); + actual_end = min_t(u64, isize, end + 1); num_bytes = (end - start + blocksize) & ~(blocksize - 1); num_bytes = max(blocksize, num_bytes); |