Commit 580afd76 authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: Fix compressed checksum fsync log copies 



The fsync logging code makes sure to onl copy the relevant checksum for each
extent based on the file extent pointers it finds.

But for compressed extents, it needs to copy the checksum for the
entire extent.

Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent c3027eb5

fs/btrfs/file.c

+2 −1
Original line number Diff line number Diff line
@@ -1228,7 +1228,8 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync) 
	mutex_unlock(&root->fs_info->trans_mutex);



	root->fs_info->tree_log_batch++;

	filemap_fdatawait(inode->i_mapping);

	filemap_fdatawrite(inode->i_mapping);

	btrfs_wait_ordered_range(inode, 0, (u64)-1);

	root->fs_info->tree_log_batch++;



	/*

fs/btrfs/tree-log.c

+5 −0
Original line number Diff line number Diff line
@@ -2610,6 +2610,11 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, 
				u64 cs = btrfs_file_extent_offset(src, extent);

				u64 cl = btrfs_file_extent_num_bytes(src,

								     extent);;

				if (btrfs_file_extent_compression(src,

								  extent)) {

					cs = 0;

					cl = dl;

				}

				/* ds == 0 is a hole */

				if (ds != 0) {

					ret = btrfs_inc_extent_ref(trans, log,

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