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-rw-r--r--fs/cifs/smb2ops.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index a67df8eaf702..d6aaeff4a30a 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1858,9 +1858,17 @@ smb2_copychunk_range(const unsigned int xid,
int chunks_copied = 0;
bool chunk_sizes_updated = false;
ssize_t bytes_written, total_bytes_written = 0;
+ struct inode *inode;
pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
+ /*
+ * We need to flush all unwritten data before we can send the
+ * copychunk ioctl to the server.
+ */
+ inode = d_inode(trgtfile->dentry);
+ filemap_write_and_wait(inode->i_mapping);
+
if (pcchunk == NULL)
return -ENOMEM;