Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

[firefly-linux-kernel-4.4.55.git] / fs / ecryptfs / read_write.c

diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c
index 75c2ea9fee35341cdb32f54ec87d2f9708b5a4ab..a137c6ea2feec65181741ad1531bd35b6bfe0012 100644 (file)
--- a/fs/ecryptfs/read_write.c
+++ b/fs/ecryptfs/read_write.c
@@ -117,13 +117,15 @@ int ecryptfs_write(struct file *ecryptfs_file, char *data, loff_t offset,
                   size_t size)
 {
        struct page *ecryptfs_page;
+       struct ecryptfs_crypt_stat *crypt_stat;
+       struct inode *ecryptfs_inode = ecryptfs_file->f_dentry->d_inode;
        char *ecryptfs_page_virt;
-       loff_t ecryptfs_file_size =
-               i_size_read(ecryptfs_file->f_dentry->d_inode);
+       loff_t ecryptfs_file_size = i_size_read(ecryptfs_inode);
        loff_t data_offset = 0;
        loff_t pos;
        int rc = 0;
 
+       crypt_stat = &ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat;
        /*
         * if we are writing beyond current size, then start pos
         * at the current size - we'll fill in zeros from there.
@@ -184,7 +186,13 @@ int ecryptfs_write(struct file *ecryptfs_file, char *data, loff_t offset,
                flush_dcache_page(ecryptfs_page);
                SetPageUptodate(ecryptfs_page);
                unlock_page(ecryptfs_page);
-               rc = ecryptfs_encrypt_page(ecryptfs_page);
+               if (crypt_stat->flags & ECRYPTFS_ENCRYPTED)
+                       rc = ecryptfs_encrypt_page(ecryptfs_page);
+               else
+                       rc = ecryptfs_write_lower_page_segment(ecryptfs_inode,
+                                               ecryptfs_page,
+                                               start_offset_in_page,
+                                               data_offset);
                page_cache_release(ecryptfs_page);
                if (rc) {
                        printk(KERN_ERR "%s: Error encrypting "
@@ -194,14 +202,16 @@ int ecryptfs_write(struct file *ecryptfs_file, char *data, loff_t offset,
                pos += num_bytes;
        }
        if ((offset + size) > ecryptfs_file_size) {
-               i_size_write(ecryptfs_file->f_dentry->d_inode, (offset + size));
-               rc = ecryptfs_write_inode_size_to_metadata(
-                       ecryptfs_file->f_dentry->d_inode);
-               if (rc) {
-                       printk(KERN_ERR "Problem with "
-                              "ecryptfs_write_inode_size_to_metadata; "
-                              "rc = [%d]\n", rc);
-                       goto out;
+               i_size_write(ecryptfs_inode, (offset + size));
+               if (crypt_stat->flags & ECRYPTFS_ENCRYPTED) {
+                       rc = ecryptfs_write_inode_size_to_metadata(
+                                                               ecryptfs_inode);
+                       if (rc) {
+                               printk(KERN_ERR "Problem with "
+                                      "ecryptfs_write_inode_size_to_metadata; "
+                                      "rc = [%d]\n", rc);
+                               goto out;
+                       }
                }
        }
 out: