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-rw-r--r--fs/btrfs/disk-io.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 67d663ab658a..60d4f1b210d7 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -4653,9 +4653,12 @@ static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info)
}
static const struct extent_io_ops btree_extent_io_ops = {
- .readpage_end_io_hook = btree_readpage_end_io_hook,
- .readpage_io_failed_hook = btree_io_failed_hook,
+ /* mandatory callbacks */
.submit_bio_hook = btree_submit_bio_hook,
+ .readpage_end_io_hook = btree_readpage_end_io_hook,
/* note we're sharing with inode.c for the merge bio hook */
.merge_bio_hook = btrfs_merge_bio_hook,
+
+ /* optional callbacks */
+ .readpage_io_failed_hook = btree_io_failed_hook,
};