[RFC PATCH 30/35] netfs: Make netfs_page_mkwrite() use folio_mkwrite_check_truncate()

[David Howells]

Make netfs_page_mkwrite() use folio_mkwrite_check_truncate() rather than
doing the checks itself (and it doesn't currently do all the checks).

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: Jeff Layton <jlayton@xxxxxxxxxx>
cc: Viacheslav Dubeyko <slava@xxxxxxxxxxx>
cc: Alex Markuze <amarkuze@xxxxxxxxxx>
cc: Ilya Dryomov <idryomov@xxxxxxxxx>
cc: ceph-devel@xxxxxxxxxxxxxxx
cc: linux-fsdevel@xxxxxxxxxxxxxxx
---
 fs/netfs/buffered_write.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c
index 12ddbe9bc78b..64a0f0620399 100644
--- a/fs/netfs/buffered_write.c
+++ b/fs/netfs/buffered_write.c
@@ -506,7 +506,7 @@ vm_fault_t netfs_page_mkwrite(struct vm_fault *vmf, struct netfs_group *netfs_gr
 
 	if (folio_lock_killable(folio) < 0)
 		goto out;
-	if (folio->mapping != mapping)
+	if (folio_mkwrite_check_truncate(folio, inode) < 0)
 		goto unlock;
 	if (folio_wait_writeback_killable(folio) < 0)
 		goto unlock;