fs/9p: Always ask new inode in create
This make sure we don't end up reusing the unlinked inode object.
The ideal way is to use inode i_generation. But i_generation is
not available in userspace always.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 5d7392e..e78956c 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -153,13 +153,13 @@
void *p);
extern struct inode *v9fs_inode_from_fid(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
- struct super_block *sb);
+ struct super_block *sb, int new);
extern const struct inode_operations v9fs_dir_inode_operations_dotl;
extern const struct inode_operations v9fs_file_inode_operations_dotl;
extern const struct inode_operations v9fs_symlink_inode_operations_dotl;
extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses,
struct p9_fid *fid,
- struct super_block *sb);
+ struct super_block *sb, int new);
/* other default globals */
#define V9FS_PORT 564
@@ -201,8 +201,27 @@
struct super_block *sb)
{
if (v9fs_proto_dotl(v9ses))
- return v9fs_inode_from_fid_dotl(v9ses, fid, sb);
+ return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 0);
else
- return v9fs_inode_from_fid(v9ses, fid, sb);
+ return v9fs_inode_from_fid(v9ses, fid, sb, 0);
}
+
+/**
+ * v9fs_get_new_inode_from_fid - Helper routine to populate an inode by
+ * issuing a attribute request
+ * @v9ses: session information
+ * @fid: fid to issue attribute request for
+ * @sb: superblock on which to create inode
+ *
+ */
+static inline struct inode *
+v9fs_get_new_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
+ struct super_block *sb)
+{
+ if (v9fs_proto_dotl(v9ses))
+ return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 1);
+ else
+ return v9fs_inode_from_fid(v9ses, fid, sb, 1);
+}
+
#endif