[PATCH 9/9] btrfs: lift the call to mapping_set_error out of cow_file_range

[Christoph Hellwig <hch@lst.de>]

Instead of calling mapping_set_error in cow_file_range for the
!locked_page case, make the submit_uncompressed_range call
mapping_set_error also for the !locked_page as that is the only caller
that might pass a NULL locked_page.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/inode.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0d33bff5ca176f..b04eacc0fed44e 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1077,6 +1077,7 @@ static void submit_uncompressed_range(struct btrfs_inode *inode,
 	wbc_detach_inode(&wbc);
 	if (ret < 0) {
 		btrfs_cleanup_ordered_extents(inode, locked_page, start, end - start + 1);
+		mapping_set_error(inode->vfs_inode.i_mapping, ret);
 		if (locked_page) {
 			const u64 page_start = page_offset(locked_page);
 
@@ -1088,7 +1089,6 @@ static void submit_uncompressed_range(struct btrfs_inode *inode,
 			btrfs_page_clear_uptodate(inode->root->fs_info,
 						  locked_page, page_start,
 						  PAGE_SIZE);
-			mapping_set_error(locked_page->mapping, ret);
 			unlock_page(locked_page);
 		}
 	}
@@ -1526,12 +1526,9 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
 	 * However, in case of @keep_locked, we still need to unlock the pages
 	 * (except @locked_page) to ensure all the pages are unlocked.
 	 */
-	if (keep_locked && orig_start < start) {
-		if (!locked_page)
-			mapping_set_error(inode->vfs_inode.i_mapping, ret);
+	if (keep_locked && orig_start < start)
 		extent_clear_unlock_delalloc(inode, orig_start, start - 1,
 					     locked_page, 0, page_ops);
-	}
 
 	/*
 	 * For the range (2). If we reserved an extent for our delalloc range
-- 
2.39.2