On Wed, Sep 19, 2007 at 10:50:57PM -0700, Andrew Morton wrote:
> On Mon, 17 Sep 2007 16:50:16 -0500 Michael Halcrow <mhalcrow@xxxxxxxxxx> wrote:
> > +ecryptfs_copy_up_encrypted_with_header(struct page *page,
> > + struct ecryptfs_crypt_stat *crypt_stat)
> > +{
...
> > + flush_dcache_page(page);
> > + if (rc) {
> > + ClearPageUptodate(page);
> > + printk(KERN_ERR "%s: Error reading xattr "
> > + "region; rc = [%d]\n", __FUNCTION__, rc);
> > + goto out;
> > + }
> > + SetPageUptodate(page);
>
> I don't know what sort of page `page' refers to here, but normally we only
> manipulate the page uptodate status under lock_page().
This is the page that eCryptfs gets via
ecryptfs_aops->ecryptfs_readpage(), so this should be okay. The
comment should make the fact that the page is locked explicit.
Signed-off-by: Michael Halcrow <mhalcrow@xxxxxxxxxx>
---
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 04103ff..c6a8a33 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -111,7 +111,7 @@ static void set_header_info(char *page_virt,
* ecryptfs_copy_up_encrypted_with_header
* @page: Sort of a ``virtual'' representation of the encrypted lower
* file. The actual lower file does not have the metadata in
- * the header.
+ * the header. This is locked.
* @crypt_stat: The eCryptfs inode's cryptographic context
*
* The ``view'' is the version of the file that userspace winds up
-
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