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authorAmir Goldstein <amir73il@gmail.com>2017-10-15 18:00:20 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2018-01-24 11:25:58 +0100
commitaa3ff3c152ff94ef045ed802db7535167f8a21ab (patch)
treebdeb25cc1784bf8bf2862d654b8a9ea5b0134b33 /fs/overlayfs/util.c
parent829c28be9bb9a05aa7eeb8a68a4536cca2d3d694 (diff)
downloadblackbird-op-linux-aa3ff3c152ff94ef045ed802db7535167f8a21ab.tar.gz
blackbird-op-linux-aa3ff3c152ff94ef045ed802db7535167f8a21ab.zip
ovl: copy up of disconnected dentries
With NFS export, some operations on decoded file handles (e.g. open, link, setattr, xattr_set) may call copy up with a disconnected non-dir. In this case, we will copy up lower inode to index dir without linking it to upper dir. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/util.c')
-rw-r--r--fs/overlayfs/util.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index aa2234d52007..68541eb5be8e 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -229,9 +229,10 @@ void ovl_dentry_set_opaque(struct dentry *dentry)
}
/*
- * For hard links it's possible for ovl_dentry_upper() to return positive, while
- * there's no actual upper alias for the inode. Copy up code needs to know
- * about the existence of the upper alias, so it can't use ovl_dentry_upper().
+ * For hard links and decoded file handles, it's possible for ovl_dentry_upper()
+ * to return positive, while there's no actual upper alias for the inode.
+ * Copy up code needs to know about the existence of the upper alias, so it
+ * can't use ovl_dentry_upper().
*/
bool ovl_dentry_has_upper_alias(struct dentry *dentry)
{
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